How did you do? I had a lot of fun making this one. Don't forget there's loads more quizzes on my channel plus more interactive quizzes on my new website 👉 quizamp.com
@@Patrik6920 Thanks for commenting. Mass is a measure of the amount of matter in an object. There are many references to this. The hottest part of the sun is definitely the core, again, many references. The Earth's tilt causes the seasons, it has nothing to do with the orbit. This can be confirmed by the fact that it is closest to the sun in January, yet it is winter in the Northern Hemisphere in January. Again there are many references that confirm it is due to the tilt. Anyway, thanks for commenting, its always great to discuss these things.
I have to be pedantic about Q60. "What happens to the speed of light when it travels through water?" Now you say "it slows down" but that's not right. Light travels at a constant speed through water. That constant speed is slower than when travelling through a vaccuum or the air, but while it's travelling through the water it is still travelling at a constant speed. Now even if you'd said "What happens to the speed of light as it ENTERS water?" You'd have been closer to correct but still not quite right because it depends what medium the light is entering the water FROM. If light was to enter water from a diamond, it would actually speed up.
@@Patrik6920 You are wrong about the sun. The sun's corona is only 1 million °C. The core of the sun is 15 million °C. I think that you are thinking of the photosphere, which is only about 5,500 °C.
Q47: no, convection is not the "explanation" for why hot air rises and cold air sinks, it is the description of that phenomenon. The "explanation" is buoyancy, arising from changes in density due to changes in temperature.
@@eracer1111 Nope, it is not. The choice that comes closest to explaining why, is actually Archimed's principle. It is the only choice that incorporates buoyancy, which is what causes hot air to rise and cold air to sink.
Convection is merely a description of the way to transport heat by storing it in a fluid and then displace the fluid, regardless of direction or power source for that displacement. It's the working of thermals that explains specifically the flow of hot air through cold air and vice versa.
I agree, the convection is the phenomena due to Archimed's principle. Something most push up the hot air and it's cold air because more density than hot air. That how work Archimed's principle.
@@USAUSGNo I grew up in a medical family and being inquisitive would always ask what words mean and what things had effects on. I also did biology at A level.
100/100 Math/physics double major and biochemistrey minor, graduate school for mathematics. I read a few hours a day, all nonfiction. Almost 70 years of age. It can be done.
#19 correct answer, but incorrectly worded question. If a falling object has reached terminal velocity, that is because the force of air resistance matches the force of gravity so there is now no more speeding up. By definition this is not "free fall". Free Fall is gravity only - no other forces, not even air resistance. Great quiz! I need to brush up on my anatomy.
number 10: 1. Dopamine is a neurotransmitter, not a hormone. 2. Dopamine doesn't control happiness, that's more seretonin. The reason it is thought of as a happy neurotransmitter is because of the reward pathway system, which is based on dopamine, and when activated, can make you feel happy. But dopamine release does not necessarily make you happy. It's a complex system not quite fully known.
Actually, it's both. Outside the brain, dopamine does, in fact, fit the definition of hormone. It is released by the adrenal glands and has several physiological roles, though not necessarily in the "happiness" realm..
i thought some chemicals can act as both a hormone and neurotransmitter. its interesting to learn about the different happy chemicals we have! oxytocin too for bonding with others and forming relationships :)
Your criticism is fair. To be accurate, Dopamine is both a neurotransmitter and a hormone. The question wasn't worded well because as a hormone, Dopamine has nothing to do with feeling happy. It's more to do with its role in blood pressure or just as an intermediate in catecholamine production. As a neurotransmitter, this would not be unfair as you stated, its involvement in reward processing. There are many many neurotransmitters that could be linked with "happiness", like serotonin and oxytocin, both of which are also hormones in their own right.
№47 is not correct either. The reason for hot air rising is that it is not as dense as cold air. Cold air is denser (i.e. heavier per volume unit) and dense liquids, gases tend to drift lower, pushing other liquids/gases, up. So the reason is "different density". "Convection" is a consequence of this process.
Your argument sounds fair & I had to think about this one for a bit, because isn’t “Cold” a term we have given to a body that lacks relative heat, ie: there is no such thing as cold, just a lack of heat. A heated substance will have more energy and tend to rise and causes motion even at an atomic level, heat causes more motion (heat is a body/or energy that is in constant motion) & so a convection of currents can/will occur as the heat continues to move from a warmer body to a cooler body until it reaches an equilibrium. Hot water system can be interesting in this way, thats a solar HW system will have it’s tank above the solar collector panels so the cooler water circulates by convection to the panels for heating which creates a convection cycle, whereas a electric HW system tank will introduce the cold water (usually) down low of the tank as the hot water exits the upper tank level & there will be a definite line where the cold and hot water is until it reheats the whole tank again by way of a heating element down low which will cause a convection of currents to heat the whole tank, but what happens if the heating element blows while the tank is half hot & half cold & left that way with no water in or out, without a pump to move the water inside the heat would slowly move down to the lower cooler water, but this would take some time and I dont know if it could be called convection in such an instance where the cooler water is just slowly absorbing the heat from the hotter water source above it and not really setting up a convection of currents. IDK just guessing.
@@evil17 "A heated substance will have more energy and tend to rise and causes motion even at an atomic level, heat causes more motion" Be very careful here, the heated air rises only because it has a lower density. The warm air body "floats" in the ocean of cold air and rises up, because its weigh is less than the Archimedes' force exerted on it by the ocean of the cold air. Heat is motion, motion is not heat. The energy of rising hot air (upward velocity) is kinetic energy, not heat. "a convection of currents can/will occur as the heat continues to move from a warmer body to a cooler body until it reaches an equilibrium." Most heat transfer between the hot and cold air "bodies" happens because of these bodies mixing together on the boundaries. It is hard to talk about a "body" that does not have a well defined boundary. Another thing to consider: if the warm air body is above the cold body, there is no reason for any movement, so, while the heat transfer is in progress from the warm to the cold body, no movement happens and there is no convection. So, it's not the temperature difference that causes the convection. It's the difference in the specific weight of the bodies, which makes the lighter body to float in the denser fluid.
@@chimkennubbets6899 I'll start my 10th grade from the 18th of april and i got 97.Still, everyones knowledge level is different but Good job nevertheless!
Q56 Comets and asteroids also have distinctly different orbits and if you include a comet's tail, distinctly different sizes, making the choice of answer completely arbitrary. Primary according to what scale?
No, asteroids are comprised of rock and metal materials. Comets are ice balls, often covered in dust. Meteors are asteroids that makes it into Earth's atmosphere (ok, maybe atmospheres of other planets too).
Question 41: refraction only describes the bending of light it doesn't explain it. The same thing goes for question 47, where convection describes the movement of warmer air. I got 78 first time round, but second time I did a lot better!
You have to learn how to answer multiple choice questions, it's the one that's "correct" not the one that's really deeply correct lol. Good lesson to learn if you have to take exams.
I got 70/100..... Grade 10 student here. We didn't study most of this in our school (yet). I answer this kind of test to further develop my knowledge in science since I'm a soon-to-be STEM student :>
@vedantwankhade4239 it is thanks to our stressful and competitive environment as Indians that you got 95. I don't personally know anyone who does this but I've heard some of us Indians start preparing for university entrance exams since grade 7. That's just sad
For Q3... elements are substances made up of only 1 type of atom, two of the same types of atoms can combine to form a molecule while still fulfilling the criteria (like O2, or N2, etc)
96/100. Missed the hydroponics one, the batteries one, the shortest day one and the copper and tin one. I would like to point out three aspects from the quiz: 1. Question 61 made me wonder about the difference between mould and mold 2. [!!spoiler for Q69] that is just one of the two main accepted definitions of organic compounds; the other one is they contain a C-H bond or C-C bond, the main difference between the definitions being that all compounds that contain carbon would also mean the ones widely considered inorganic such as carbon dioxide, inorganic carbonates or cyanide 3. I would like to point out the meme entries: the mitochondria question and the F vs C degrees one. Anyway shoutouts to: the guys in the comments that elaborated on the controvery of question 47, the ones that finished school a long time ago and the science teacher that got 100/100, I aspire to be you one day Greeting from geology 🤙
@@Bell_414 In American English, a mould is something used for casting a shape, such as pottery or fiberglass. I propose that a symposium be convened to standardize the spelling of all words in English that have scientific connotations.
92/100. I disagree that it's composition that distinguishes asteroids from comets, virtually all of the asteroids in the outer solar system - the Trojans, Kuiper belt objects, are largely composed of ices, and would be comets if in highly elliptical orbits that entered the inner solar system.
There was a recent science news item about the difference between between asteroids and comets. The thinking is tilting to the view that asteroids and comets are pretty much the same, in terms of their compositions at the time the solar system was forming. But asteroids were in closer orbits, and most of their volatile components -- ice and frozen gasses -- have been driven off over the eons. Also, orbiting in the much more crowded inner parts of the solar system, they've been subject to reforming by collisions and agglomeration. But there's been found to be a continuum of objects between "typical asteroid" and "typical comet". So it's their orbit that distinguishes them in a more fundamental sense than composition. Although their orbit does affect their composition over time.
@rogerarnold5627 I suspect that the line of reasoning that leads to the claim that its composition that counts rather than orbit is: What makes a comet a comet? It has volatiles that produce the coma and tail, an asteroid in the same orbit doesn't have the coma and tail because it has few volatiles, therefore the difference between a comet and asteroid is the composition. The problem with that reasoning is that it eliminates from consideration all the volatile containing asteroids not in the orbits that make any volatiles sublimate.
@@mauricearpin7946 C and D type asteroids are rich in volatiles, they are mostly the more distant asteroids in the main belt. If in elliptical orbits that brought them close to the Sun, many would form coma and tails.
@@mauricearpin7946 The Asteroid-Comet Continuum: In Search of Lost Primitivity By Matthieu Gounelle "Recent results from the Stardust comet sample-return mission have confirmed the idea that there is a continuum between primitive small bodies in the outer main asteroid belt and comets. Indeed, the mineralogy as well as the chemical and oxygen isotope compositions of the dust from comet Wild 2 are very similar to those of carbonaceous chondrites, a class of meteorites allegedly derived from primitive, dark asteroids. Comets no longer represent extremely primitive samples of the early Solar System that are radically different from dark asteroids. We enter a new era in which comets and their siblings, the dark asteroids, are seen as a collection of individual objects whose geology can be studied"
83/100. Pretty good for a gal who sucks at science. My score would have been much, much lower without the multiple choice, I can tell you! LOL Thanks much for the brain workout, Ben. ♥
95/100. - My degrees are in biophysics and molecular biology so most questions were easy. Earth science and astronomy aren't my strong subjects. I missed the troposphere question, CO2 on Mars, and the orbit of Jupiter. I clearly need an astronomy class and geology too.
My degree in mechanical engineering was in 2005, but I lost touch with my field and moved to IT and marketing. I also haven’t read any chemistry books since high school. Still, I aced the quiz with 100/100 and no mistakes. It must be my "neuroplasticity." 😅The biology questions were easier with the multiple-choice options. But I didn’t need them for physics. I remembered that Rayleigh’s scattering makes the sky blue and diffraction bends light through water (we did experiments on these things). I guessed the gymnosperm question, though. Your clue about the corn on the cob helped. I knew it was a seed. I also knew that sulfur compounds are not common on planets like Mars. I’m so happy with my quiz results. And I feel smarter too. Mechanical engineering is the best education you can get. That stream develops the strongest analytical skills that stay with you your whole life. 😅
That's great! Only six wrong! Manageable! Copy down all the wrong questions. Then, each day, WikiGoogle one question for 30 min. or so until you know the answer -- and can also see why the question was important and why it's a good thing to know the answer. Then, on Day 7, do the next ten questions. By then, maybe you discovered that discovering stuff is cool. After Question 100, look out at your world and see how it has changed for you!
Scraped in with 68/100. I’m very pleased with that as I thought I would have got a lot less. I wouldn’t have that score without multiple choice answers because the words echoed in my brain from school. These are great quizzes Ben, especially as I have had sciatica pain on and off for several years. They are a wonderful distraction from the pain so thank you xx
@@judil3294 Take care. Sleep gets to be a chore that needs to be done desperately. It’s so frustrating when you only get snippets of it. I tell myself that it’s overrated just in the hopes of proving myself wrong as if it is something to fall foul of.
I recently tried one of your science quizzes and absolutely loved it! The questions were engaging, and I managed to answer most of them correctly, which made the experience all the more enjoyable. I wanted to suggest adding a few mechanical comprehension quizzes to your lineup. Mechanical comprehension is an opportunity to apply science, especially physics and mechanical principles, to actual scenarios. Incorporating these quizzes could make for an exciting and educational addition to your content.
🌹💖 Thank you very much my dear very best friend, Someone💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
🌹💖. Thank you very much again my dear very best friend, Someone💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
🌹💖 Thank you very much once again my dear very best friend, Someone🧸💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
83/100 Plenty of room for improvement. Science was my favorite subject as a child. Somewhere along the way, I discovered the humanities and haven't looked at sience since high-school. This is lovely. I'll keep an eye for these quizzes. Who knows, maybe I'll become an astrophysicist in my 60s
83/100 is excellent for 3 reasons. 1. You have an broad understanding and impressive knowledge across all the sciences. 2. You can answer challenging questions for 25 straight minutes, each one against the clock and 3. I got 83 too so we must be excellent.
92/100 ... I too had a little issue with No 47 feeling that Archimedes was more fundamental and convection was a process - but I looked it up after and convection is totally the right answer. I also worried a bit about the asteroid/ comet one feeling that the orbit was the more important - but I looked that up as well and am now very happy that composition is a good answer. A most enjoyable quiz.
Hi Ben 87/100. Not too bad. A good mix of questions . As a history graduate I was a bit worried. The only science I studied in school was biology but I must have retained more than I thought. I also read a lot of science fiction so that came in handy.
Got 89 correct out of 100. Just wasn't able to answer questions of biology because that is not my main stream 😅. Although I got some basic questions correct.
100/100, 12th student, got a 100 because i focus on the quantity of knowledge rather than quality, I'm not very good at academics but i have a LOT of information and general knowledge
Questions no. 47 is worded wrong. Convection IS the movement of fluids due to different properties, like density. It doesn't explain why it happens. Archimedes explains that warm air, being less dense as it expanded, rises above colder, denser air because it displaces more volume per unit of mass.
I guessed Archimedes on this as well. I knew Archimedes had a law of buoyancy, and warm air rising above cooler air IS an example of buoyancy, because the warm air is less dense. Just as something less dense than water (or other fluid) will float to the top.
Convection is the name of the process by which warm air rises by virtue of its greater buoyancy than the surrounding cooler, denser air. Convection is the correct answer.
78/100 “What happens to the speed of light in water?”’Slows down” is a bit debatable. If by light you mean a beam of light, it refracts (and so appears to slow down). However, “speed of light“ i.e. speed of a photon or speed of an electromagnetic wave is a universal constant.
Thanks for commenting. It wasn't meant to be that complicated, it's just a short simple question. Yes, the speed of light in a vacuum, referred to as c, is a constant. Mediums such as air or water slow light. But of course it's much more complicated than that, but there's not the scope in a short quiz question to define all the variations. Here's a great article that tries to explain it all. www.space.com/how-does-light-slow-down
The speed of light *in a vaccum* is a universal constant c. The speed of light through a medium will be lower than c by an amout that varies with the medium.
Great quiz, but eeeh, compounds that contain carbon aren’t necessarily called organic compounds… like graphite (the thermodynamical most stable) is most definitely an inorganic and the same is diamond which is also pure carbon. Organics will have hydrogen at least other than carbon, and often also oxygen, nitrogen, sulphur and/or halides
Thanks for commenting. Maybe it's the way I worded it or how you read it. All organic compounds contain carbon compounds. That is what was meant by it. I will word it better if I use that question again sometime. It is a challenge of making short questions that cannot be interpreted in different ways. Thanks again for commenting , you are right, it should have been worded better. 😁
@@Quizzes4U Yes. If you had asked it the other way round it would be correct. i.e. Q. What element do all organic compounds contain? - A. Carbon. The problem is that the various metal carbonates are all classified under the 'Inorganic' section in chemistry textbooks.
Started out well, missed more towards the end - esp. physics or astronomy/geology related questions. Scored 86/100. I haven't attended school in 35 - 40 yrs.
Ben, love science and whilst I never actually keep score, I'd say around the 85 mark. I always do well with the science category and the more I do them, the more I learn. That's what it's about.
I'll quibble with three: convection is the dynamic process, while Archimedes' principle, differential buoyancy, is the mechanism; light slows at the transition to water from vacuum or air, once within a medium it travels at the speed of light for that medium; and I'd say that an ice object or stony/metallic object can sit happily in a more or less circular orbit (low eccentricity) until some destabilizing interaction launches it towards fair 'helios' where the icy object (maybe sandy dune) grows its characteristic cometary plume(s).
Great quiz, as always, but the speed of light doesn't slow down while passing through water. A photon travels at the speed of light between its interactions with water molecules.
Glad you enjoyed it. The commonly held view is that light does slow down in water (ref. The refractive index of light is 25% slower when it moves through water), however after further reading on the subject, a more correct answer would be that it "appears" to slow down.
@@Quizzes4Uslows down is completely fine, esp. if you think maxwells equations in media are good and they are. Any reference to a photons is suspect, since a light wave doesn’t even have a fixed number of photons (see Glauber state), and single photon slows down and the speeds back up on the exit….but is you say it’s moving at c but interfering with phase shifted versions of itself, then is it really the same photon, or a coherent copy of the original? idk, why get into quantum mechanics…just say it slows down, or not. If you look at it classically with jefimenkos equation, then a wave doesn’t have an identity, it’s just an emergent phenomenon related to charges and currents😊 in the pas lightcone…so agin, it’s coherent new wave. Idk…bosons be like that.
Even putting the details aside, it isn’t the speed of light (c) that slows down. That was the bit that stumped me; I thought it was a sort of trick question.
Number 47 annoyed me convection isn't why hot air rises it's a result of hot air rising. It rises due to being less dense than the surroundings so experiences an upthrust greater than it's weight
There are a bunch of processes that cause air rising and falling. So it's probably wrong to only give credit to density. If it was only density - then we would've had all of our gases into layers, instead of meshed up together.
If water did not expand, and become lighter and float, it would sink to the bottom, forcing all the life upwards, and all the fish would die when it freezes completely. Luckily for us, the floating ice keeps the water underneath liquid.
Water contracts like most other matter when cooled....slightly...then, when it gets cold enough to freeze, it forms a crystal lattice when makes it "expand" greatly. Not arguing, just clarifying.
@@quaddawg I learnt at school (many, many years ago) that the so-called anomalous expansion of water starts at 4 degrees C, but it does not solidify until just above 0 centigrade.
I was almost expecting Pink Floyd to be an option for #73 just to make sure we're still paying attention 3/4 of the way through!! 😅 First time getting this channel recommended, really enjoyed it, nicely paced for 100 questions, grahics are clear and simple without offering a potential 'hint' to the answer like some other quizzes I've tried. Definitely will be subscribing and looking forward to trying the other quizzes. Good work. Cheers 👍
5. "What is the branch of physics that deals with the behavior of objects at very low temperatures?" A. Cryogenics B. Quantum mechanics C. Thermodynamics It's all three, by definition. Obviously the "very low temperatures" bit was meant to guide people to answer Cryogenics, and if you get literal enough the other two branches don't deal exclusively with cold temperatures, but the whole reason of studying the behavior of objects at very low temperatures involves quantum mechanics (e.g. Bose-Einstein condensates), and you literally can't do low-temperature physics without considering thermodynamics.
73/100. I’m going to give myself some slack as I haven’t been in school and done science for 6ish (plus) years so not too bad. Still had a surprising about of fun.
"What is the term for the amount of matter in an object?". It is neither volume, density or mass. This is easy to see since you can imagine a pair of objects, one of which contains more atoms, yet the other one has more volume/density/mass. The term you are asking for is simply "amount" and is measured in mol.
@@robynreed6368 What's that? An argument from authority? It is still wrong unless you attack my statement via its content. Wikipedia by the way is sophisticated enough to write "Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a body, until the discovery of the atom and particle physics."
I guess you could say mass, because mass effectively conveys the sense of it--how many subatomic particles are in the object. You don't want to say how many atoms because atoms of different elements have different numbers of subatomic particles.
I would argue that while moles describe the number of nuclei, the amount of matter is more likely described as what affects space-time more / has greater gravity, which we measure as mass.
The amount of matter is measured in mass. 1 mol of carbon (12 grams) has a different mass than 1 mol of sodium (23 grams). This is because sodium has more matter (protons, neutrons, and electrons) than does carbon. Mass truly is measuring the amount of matter - protons, neutrons, and electrons that make up the atoms.
In number 23 perhaps hydronium would be a better answer than hydrogen, the p representing the negative log of the hydronium ion concentration. It's kinda hydrogen, but kinda not.
I saw the picture of the prism (#73) and the first answer that popped in my head was Pink Floyd. 86/100 A few lucky swags (scientific wild-ass guesses) and missed some I should have thought about harder.
96/100. Nice quiz, although there was no right option for the convection question. The reason why hot air moves up is the _difference in densities_ and the term convection just refers to the fact that we have transportation of energy as a _consequence_ of that movement.
How did you do? I had a lot of fun making this one. Don't forget there's loads more quizzes on my channel plus more interactive quizzes on my new website 👉 quizamp.com
@Patrik6920 great context, thank you for the additional info
@@Patrik6920 Thanks for commenting. Mass is a measure of the amount of matter in an object. There are many references to this. The hottest part of the sun is definitely the core, again, many references. The Earth's tilt causes the seasons, it has nothing to do with the orbit. This can be confirmed by the fact that it is closest to the sun in January, yet it is winter in the Northern Hemisphere in January. Again there are many references that confirm it is due to the tilt. Anyway, thanks for commenting, its always great to discuss these things.
I have to be pedantic about Q60. "What happens to the speed of light when it travels through water?" Now you say "it slows down" but that's not right.
Light travels at a constant speed through water. That constant speed is slower than when travelling through a vaccuum or the air, but while it's travelling through the water it is still travelling at a constant speed.
Now even if you'd said "What happens to the speed of light as it ENTERS water?" You'd have been closer to correct but still not quite right because it depends what medium the light is entering the water FROM. If light was to enter water from a diamond, it would actually speed up.
@@Patrik6920 You are wrong about the sun. The sun's corona is only 1 million °C. The core of the sun is 15 million °C. I think that you are thinking of the photosphere, which is only about 5,500 °C.
Water is made of 2 elements, not 3
Q47: no, convection is not the "explanation" for why hot air rises and cold air sinks, it is the description of that phenomenon. The "explanation" is buoyancy, arising from changes in density due to changes in temperature.
Yes, but it was the best of the three choices.
@@eracer1111 Nope, it is not.
The choice that comes closest to explaining why, is actually Archimed's principle.
It is the only choice that incorporates buoyancy, which is what causes hot air to rise and cold air to sink.
Convection is merely a description of the way to transport heat by storing it in a fluid and then displace the fluid, regardless of direction or power source for that displacement.
It's the working of thermals that explains specifically the flow of hot air through cold air and vice versa.
Convection is exactly the term for what is happening. 😊
I agree, the convection is the phenomena due to Archimed's principle. Something most push up the hot air and it's cold air because more density than hot air. That how work Archimed's principle.
I’m over 70, no chemistry classes, very little biology, and managed a 60 out of 100. Not badfor an old woman.
The 1st twenty or so questions were much easier! Then quickly got harder for me
Good job
70 is not old and 60/100 is a very respectable score. Well done.
Funny....males get on average about 95 out of 100...girls...barely more than half.
97/100. Medical knowledge again played a big part. It helps to identify thhe root of some of these word and to work out the correct answer logicly.
are you a doctor
@@USAUSGNo I grew up in a medical family and being inquisitive would always ask what words mean and what things had effects on. I also did biology at A level.
It is called Latin
@@stevenpace892 And Greek ofc
@@stevenpace892 That's a nice smart arse response. But the roots of medicin are based both in latin and old greek. Jog on.
MITOCHONDRIA IS THE POWERHOUSE OF THE CELL! ✊🏻
Mitochondrion
@@anthonystreeter7808
The 'Mitochondrion' - singular
'Mitochondria' - plural form (meaning every Mitochondrion)
DUDE I CLICKED THIS VID JUST TO SAY THAT!!!
It's not Chuck Norris?
Those questions were not for average individual 😊
100/100 Math/physics double major and biochemistrey minor, graduate school for mathematics. I read a few hours a day, all nonfiction. Almost 70 years of age. It can be done.
woah
Wow are u a teacher
Am actually looking for someone to take me some lessons
U are cheating
👿👿👿
wow!
#19 correct answer, but incorrectly worded question. If a falling object has reached terminal velocity, that is because the force of air resistance matches the force of gravity so there is now no more speeding up. By definition this is not "free fall". Free Fall is gravity only - no other forces, not even air resistance.
Great quiz! I need to brush up on my anatomy.
How I love science quizzes!
Thanks so much!
Any time!
number 10: 1. Dopamine is a neurotransmitter, not a hormone. 2. Dopamine doesn't control happiness, that's more seretonin. The reason it is thought of as a happy neurotransmitter is because of the reward pathway system, which is based on dopamine, and when activated, can make you feel happy. But dopamine release does not necessarily make you happy. It's a complex system not quite fully known.
Actually, it's both. Outside the brain, dopamine does, in fact, fit the definition of hormone. It is released by the adrenal glands and has several physiological roles, though not necessarily in the "happiness" realm..
@RyuhVal Bro hypothalamus releases dopamine to inhibit the secretion of prolactin by lactotroph cells ( so yes it is a hormone)
Dopamine is a neurotransmitter and a hormone😊
i thought some chemicals can act as both a hormone and neurotransmitter. its interesting to learn about the different happy chemicals we have! oxytocin too for bonding with others and forming relationships :)
Your criticism is fair. To be accurate, Dopamine is both a neurotransmitter and a hormone. The question wasn't worded well because as a hormone, Dopamine has nothing to do with feeling happy. It's more to do with its role in blood pressure or just as an intermediate in catecholamine production. As a neurotransmitter, this would not be unfair as you stated, its involvement in reward processing. There are many many neurotransmitters that could be linked with "happiness", like serotonin and oxytocin, both of which are also hormones in their own right.
№47 is not correct either. The reason for hot air rising is that it is not as dense as cold air. Cold air is denser (i.e. heavier per volume unit) and dense liquids, gases tend to drift lower, pushing other liquids/gases, up. So the reason is "different density". "Convection" is a consequence of this process.
Your argument sounds fair & I had to think about this one for a bit, because isn’t “Cold” a term we have given to a body that lacks relative heat, ie: there is no such thing as cold, just a lack of heat.
A heated substance will have more energy and tend to rise and causes motion even at an atomic level, heat causes more motion (heat is a body/or energy that is in constant motion) & so a convection of currents can/will occur as the heat continues to move from a warmer body to a cooler body until it reaches an equilibrium.
Hot water system can be interesting in this way, thats a solar HW system will have it’s tank above the solar collector panels so the cooler water circulates by convection to the panels for heating which creates a convection cycle, whereas a electric HW system tank will introduce the cold water (usually) down low of the tank as the hot water exits the upper tank level & there will be a definite line where the cold and hot water is until it reheats the whole tank again by way of a heating element down low which will cause a convection of currents to heat the whole tank, but what happens if the heating element blows while the tank is half hot & half cold & left that way with no water in or out, without a pump to move the water inside the heat would slowly move down to the lower cooler water, but this would take some time and I dont know if it could be called convection in such an instance where the cooler water is just slowly absorbing the heat from the hotter water source above it and not really setting up a convection of currents. IDK just guessing.
@@evil17
"A heated substance will have more energy and tend to rise and causes motion even at an atomic level, heat causes more motion"
Be very careful here, the heated air rises only because it has a lower density. The warm air body "floats" in the ocean of cold air and rises up, because its weigh is less than the Archimedes' force exerted on it by the ocean of the cold air. Heat is motion, motion is not heat. The energy of rising hot air (upward velocity) is kinetic energy, not heat.
"a convection of currents can/will occur as the heat continues to move from a warmer body to a cooler body until it reaches an equilibrium."
Most heat transfer between the hot and cold air "bodies" happens because of these bodies mixing together on the boundaries. It is hard to talk about a "body" that does not have a well defined boundary. Another thing to consider: if the warm air body is above the cold body, there is no reason for any movement, so, while the heat transfer is in progress from the warm to the cold body, no movement happens and there is no convection. So, it's not the temperature difference that causes the convection. It's the difference in the specific weight of the bodies, which makes the lighter body to float in the denser fluid.
Convection is correct
You just explained how stupid the theory of gravity is. Thank you
@@LevelEarthWD no, gravity is a fact. You are just a reality denier.
87/100 I'm studying in 10th this was useful for me thank you so much
Me too 🙃mine score was 85/100😅
That’s greattt I got 83/100
@@chimkennubbets6899 I'll start my 10th grade from the 18th of april and i got 97.Still, everyones knowledge level is different but Good job nevertheless!
@@enhypen__hoonki that’s amazinggggg! Keep it up man you’re doing awesome :DD
@@chimkennubbets6899 THANKYOUUUU
Your score is good too! you're so sweet
I'm 55/100 but I'm half of it. I'm still proud 😅
80/100! looking forward to learning about more things :)
90/100. Of the ten I missed, I just had no idea on 8 of them. There were also several that I was low confidence on but guessed right.
Q56 Comets and asteroids also have distinctly different orbits and if you include a comet's tail, distinctly different sizes, making the choice of answer completely arbitrary. Primary according to what scale?
That's right!
No, asteroids are comprised of rock and metal materials. Comets are ice balls, often covered in dust. Meteors are asteroids that makes it into Earth's atmosphere (ok, maybe atmospheres of other planets too).
No the orbits depend on the gravitation of a heavenlu body and not the objects themselves
I miss 5, at 75 I still got it . I do a lot of these test to keep sharp . I also read a lot .
Question 41: refraction only describes the bending of light it doesn't explain it. The same thing goes for question 47, where convection describes the movement of warmer air. I got 78 first time round, but second time I did a lot better!
You have to learn how to answer multiple choice questions, it's the one that's "correct" not the one that's really deeply correct lol. Good lesson to learn if you have to take exams.
🤓
If you took same test again and got less than 100 then you have IQ of a snail
I got 70/100..... Grade 10 student here. We didn't study most of this in our school (yet). I answer this kind of test to further develop my knowledge in science since I'm a soon-to-be STEM student :>
I got 97. But I'm 60 years old. :D I'd say you're doing great. Also, two of the three I got wrong I had learned at one point but just got mixed up.
I'm in 10th and I grabbed 95/100, u just have to study more 😅
@@vedantwankhade4239 no one asked scammer
@vedantwankhade4239 it is thanks to our stressful and competitive environment as Indians that you got 95. I don't personally know anyone who does this but I've heard some of us Indians start preparing for university entrance exams since grade 7. That's just sad
@@uranus256 he is an indian himself and he's clearly lying about his score come on you should'nt have fell for it
For Q3... elements are substances made up of only 1 type of atom, two of the same types of atoms can combine to form a molecule while still fulfilling the criteria (like O2, or N2, etc)
96/100. Missed the hydroponics one, the batteries one, the shortest day one and the copper and tin one. I would like to point out three aspects from the quiz: 1. Question 61 made me wonder about the difference between mould and mold 2. [!!spoiler for Q69] that is just one of the two main accepted definitions of organic compounds; the other one is they contain a C-H bond or C-C bond, the main difference between the definitions being that all compounds that contain carbon would also mean the ones widely considered inorganic such as carbon dioxide, inorganic carbonates or cyanide 3. I would like to point out the meme entries: the mitochondria question and the F vs C degrees one.
Anyway shoutouts to: the guys in the comments that elaborated on the controvery of question 47, the ones that finished school a long time ago and the science teacher that got 100/100, I aspire to be you one day
Greeting from geology 🤙
mould is brit english and mold is american
Organic chemistry is the study of carbon. It doesn't matter if compounds containing carbon are related to life or not.
@@Bell_414 In American English, a mould is something used for casting a shape, such as pottery or fiberglass. I propose that a symposium be convened to standardize the spelling of all words in English that have scientific connotations.
@@stevemcdonald1033 yeah. I think it's one of those words which have two meanings
@@stevemcdonald1033 No, it's not, we use "mold" for that too.
I got 77% of the questions. Travis X
92/100. I disagree that it's composition that distinguishes asteroids from comets, virtually all of the asteroids in the outer solar system - the Trojans, Kuiper belt objects, are largely composed of ices, and would be comets if in highly elliptical orbits that entered the inner solar system.
There was a recent science news item about the difference between between asteroids and comets. The thinking is tilting to the view that asteroids and comets are pretty much the same, in terms of their compositions at the time the solar system was forming. But asteroids were in closer orbits, and most of their volatile components -- ice and frozen gasses -- have been driven off over the eons. Also, orbiting in the much more crowded inner parts of the solar system, they've been subject to reforming by collisions and agglomeration. But there's been found to be a continuum of objects between "typical asteroid" and "typical comet". So it's their orbit that distinguishes them in a more fundamental sense than composition. Although their orbit does affect their composition over time.
@rogerarnold5627 I suspect that the line of reasoning that leads to the claim that its composition that counts rather than orbit is:
What makes a comet a comet? It has volatiles that produce the coma and tail, an asteroid in the same orbit doesn't have the coma and tail because it has few volatiles, therefore the difference between a comet and asteroid is the composition.
The problem with that reasoning is that it eliminates from consideration all the volatile containing asteroids not in the orbits that make any volatiles sublimate.
Actually Einstein, asteroids are mostly in the asteroid belt, the deviding line between the inner and outer solar system
@@mauricearpin7946 C and D type asteroids are rich in volatiles, they are mostly the more distant asteroids in the main belt. If in elliptical orbits that brought them close to the Sun, many would form coma and tails.
@@mauricearpin7946 The Asteroid-Comet Continuum: In Search of Lost Primitivity
By Matthieu Gounelle
"Recent results from the Stardust comet sample-return mission have confirmed the idea that there is a continuum between primitive small bodies in the outer main asteroid belt and comets. Indeed, the mineralogy as well as the chemical and oxygen isotope compositions of the dust from comet Wild 2 are very similar to those of carbonaceous chondrites, a class of meteorites allegedly derived from primitive, dark asteroids. Comets no longer represent extremely primitive samples of the early Solar System that are radically different from dark asteroids. We enter a new era in which comets and their siblings, the dark asteroids, are seen as a collection of individual objects whose geology can be studied"
83/100. Pretty good for a gal who sucks at science. My score would have been much, much lower without the multiple choice, I can tell you! LOL Thanks much for the brain workout, Ben. ♥
83 is definitely not someone who sucks at science. You did great 👍
@@Quizzes4U Well thank you, kind sir. ♥
@@Quizzes4UIm 13 but scored 84/100 pretty good, but I thought I would do better 😢😂
69/100 ....
@@DinoBryce Wow dude I'm sixteen and a nerd but I only got 74/100. Great job!
95/100. - My degrees are in biophysics and molecular biology so most questions were easy. Earth science and astronomy aren't my strong subjects. I missed the troposphere question, CO2 on Mars, and the orbit of Jupiter. I clearly need an astronomy class and geology too.
I love it, did 75% surprised at what I knew only from general reading, no science class since HS Biology.
Glad you loved it 😁
72/100 😢☹️ I'm so dumb
Same! I got 78% but that was with some very lucky guesses. 😊
@@SuspectedAnonymousUserNo, you’re not.
My degree in mechanical engineering was in 2005, but I lost touch with my field and moved to IT and marketing. I also haven’t read any chemistry books since high school. Still, I aced the quiz with 100/100 and no mistakes. It must be my "neuroplasticity." 😅The biology questions were easier with the multiple-choice options. But I didn’t need them for physics. I remembered that Rayleigh’s scattering makes the sky blue and diffraction bends light through water (we did experiments on these things). I guessed the gymnosperm question, though. Your clue about the corn on the cob helped. I knew it was a seed. I also knew that sulfur compounds are not common on planets like Mars. I’m so happy with my quiz results. And I feel smarter too. Mechanical engineering is the best education you can get. That stream develops the strongest analytical skills that stay with you your whole life. 😅
Dude ure an adult. Anything less than a 100 is sad for an ME
@@LeanMan82 bro is begging for appreciation
I turned it off after the first ten questions. Of those 10 questions, I correctly answered 4.
Keep at it buddy
That's great! Only six wrong! Manageable! Copy down all the wrong questions. Then, each day, WikiGoogle one question for 30 min. or so until you know the answer -- and can also see why the question was important and why it's a good thing to know the answer. Then, on Day 7, do the next ten questions. By then, maybe you discovered that discovering stuff is cool. After Question 100, look out at your world and see how it has changed for you!
Cool quiz. Got 90 right. Learned from the ones I got wrong. Thanks!
Scraped in with 68/100. I’m very pleased with that as I thought I would have got a lot less. I wouldn’t have that score without multiple choice answers because the words echoed in my brain from school. These are great quizzes Ben, especially as I have had sciatica pain on and off for several years. They are a wonderful distraction from the pain so thank you xx
Well done 😁 and thank you for letting me know how much you enjoy them. That means a lot to me. 😁
@@Quizzes4U Your welcome xx
Sorry you are dealing with pain too. Yes, keeping the brain busy really helps. It's sleeping that's hard. I had to look twice, we got the same score.
@@judil3294 Take care. Sleep gets to be a chore that needs to be done desperately. It’s so frustrating when you only get snippets of it. I tell myself that it’s overrated just in the hopes of proving myself wrong as if it is something to fall foul of.
@@joannayeo9545 Yes, we need it so desperately but end up afraid to even try.
I recently tried one of your science quizzes and absolutely loved it! The questions were engaging, and I managed to answer most of them correctly, which made the experience all the more enjoyable.
I wanted to suggest adding a few mechanical comprehension quizzes to your lineup. Mechanical comprehension is an opportunity to apply science, especially physics and mechanical principles, to actual scenarios. Incorporating these quizzes could make for an exciting and educational addition to your content.
Awesome I got one right.
Lol!
Great fun! 70/100 👍
Excellent quiz. I scored 88/100. The last 15 questions were the hardest. Thanks for posting.
Great job! Yes, a few tougher ones at the end. Thanks for playing 😁
@@Quizzes4U 87 here. I'm very shady on any biology questions.
Agree about the later questions. I scored 86/100 and got as many wrong in the last 22 questions as I got in the first 78.
Got a 80/100! My fav subs are science and math and im very much hooked into medicine! (Im grade 6 and have tutoring for grade 8)
Thank you Ben for your superb quiz. 👍👍
92/100
Great job! You said it was one of your favourite subjects if I remember correctly.
🌹💖 Thank you very much my dear very best friend, Someone💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
🌹💖. Thank you very much again my dear very best friend, Someone💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
🌹💖 Thank you very much once again my dear very best friend, Someone🧸💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
JEE/NEET homies mark your attendance
Nooo, you all are even here 😭🙏🏻
Yesss
Mee in 10th😊😊
Jer
Present!
10:07 All those years in school have finally payed off. Thank you.
83/100 Plenty of room for improvement. Science was my favorite subject as a child. Somewhere along the way, I discovered the humanities and haven't looked at sience since high-school.
This is lovely. I'll keep an eye for these quizzes. Who knows, maybe I'll become an astrophysicist in my 60s
83/100 is excellent for 3 reasons. 1. You have an broad understanding and impressive knowledge across all the sciences. 2. You can answer challenging questions for 25 straight minutes, each one against the clock and 3. I got 83 too so we must be excellent.
Same, what a coincidence
92/100 ... I too had a little issue with No 47 feeling that Archimedes was more fundamental and convection was a process - but I looked it up after and convection is totally the right answer. I also worried a bit about the asteroid/ comet one feeling that the orbit was the more important - but I looked that up as well and am now very happy that composition is a good answer. A most enjoyable quiz.
That is why quizzes like this help you learn - they make you look stuff up to try and prove you didn't get it wrong when you did.
you were correct to begin with. Archimedes principle is more of an explanation while convection is more of a description.
98/100...thanks for the 2 facts I didn't know about
Thanks I enjoyed that. Your voice is much less of an irritant than many who host these quizzes!
It's more a vocabulary quiz about science than a science quiz, but it was fun and interesting anyway, thanks!
82/100. Studying Biology for two years prior to this was such a help. Nice job with the quiz Quizzes4U :)
86/100 love science and learned a ton watching Carl Sagan’s Cosmos! 😊
97/100. Having a 40 year career in chemistry helped. 🤪😂- also astronomy was a hobby of mine.
Excellent😁
I know..but biology,
That was fun. According to you I got 5 wrong. I am marshalling my arguments...
Great quiz.
81/100, l might get them all correct if l do the quiz again, plus l have learnt some thing's, thank you
Great quiz, Ben! I always second guess myself and did miserably-- but, that's not the point! It's great fun! Thank you and Cheers!
Glad you enjoyed it!
100/100 im in 10th grade and 2 times science gold medalist of my district and cracked 2 competetive exams.
Btw im indian
Hi Ben 87/100. Not too bad. A good mix of questions . As a history graduate I was a bit worried. The only science I studied in school was biology but I must have retained more than I thought. I also read a lot of science fiction so that came in handy.
You did great 😃 thanks for playing
Jinx - 87/100 as well.
97 caught out on the Sun, and 2 others - never mind, not bad for an IT professional
Got 89 correct out of 100.
Just wasn't able to answer questions of biology because that is not my main stream 😅. Although I got some basic questions correct.
100/100, 12th student, got a 100 because i focus on the quantity of knowledge rather than quality, I'm not very good at academics but i have a LOT of information and general knowledge
12:40 Convection is the action, Archimedes' Principal is the reason.
That's right!
I got 88 right. Pretty darned good for not taking a science class for decades.
Questions no. 47 is worded wrong. Convection IS the movement of fluids due to different properties, like density. It doesn't explain why it happens.
Archimedes explains that warm air, being less dense as it expanded, rises above colder, denser air because it displaces more volume per unit of mass.
I guessed Archimedes on this as well. I knew Archimedes had a law of buoyancy, and warm air rising above cooler air IS an example of buoyancy, because the warm air is less dense. Just as something less dense than water (or other fluid) will float to the top.
Spot on mate. I was gonna say the same thing
Thanks for the feedback. Yes, with hindsight I could have worded it better. It's always difficult when trying to keep the questions short.
Convection is the name of the process by which warm air rises by virtue of its greater buoyancy than the surrounding cooler, denser air. Convection is the correct answer.
78/100
“What happens to the speed of light in water?”’Slows down” is a bit debatable. If by light you mean a beam of light, it refracts (and so appears to slow down). However, “speed of light“ i.e. speed of a photon or speed of an electromagnetic wave is a universal constant.
Thanks for commenting. It wasn't meant to be that complicated, it's just a short simple question. Yes, the speed of light in a vacuum, referred to as c, is a constant. Mediums such as air or water slow light. But of course it's much more complicated than that, but there's not the scope in a short quiz question to define all the variations. Here's a great article that tries to explain it all. www.space.com/how-does-light-slow-down
The speed of light *in a vaccum* is a universal constant c. The speed of light through a medium will be lower than c by an amout that varies with the medium.
19 wrong. I really enjoy the science and human body quizzes. Tysmf,Ben.👍😃👍
Thanks. I'm glad they are popular subjects as they are my favourite, plus geography. Thanks for playing 😁
me too (19)
Me three
I got 90/100. Kicking myself at some of these mistakes!
12, 14, 22, 41, 42, 56, 68, 73, 81, 87.
79/100 im super happy with that especially as someone who sucked at science at school.
85/100 majority of them very pretty obvious if you paid attention in class. And for the one I missed I had no idea
Great quiz, but eeeh, compounds that contain carbon aren’t necessarily called organic compounds… like graphite (the thermodynamical most stable) is most definitely an inorganic and the same is diamond which is also pure carbon.
Organics will have hydrogen at least other than carbon, and often also oxygen, nitrogen, sulphur and/or halides
Thanks for commenting. Maybe it's the way I worded it or how you read it. All organic compounds contain carbon compounds. That is what was meant by it. I will word it better if I use that question again sometime. It is a challenge of making short questions that cannot be interpreted in different ways. Thanks again for commenting , you are right, it should have been worded better. 😁
Heh... Chemist vs BioChemist !@@Quizzes4U
The key word here is "compounds." Graphite and diamond are allotropes of carbon, which itself is an element not a compound
@@Quizzes4U Yes. If you had asked it the other way round it would be correct. i.e. Q. What element do all organic compounds contain? - A. Carbon. The problem is that the various metal carbonates are all classified under the 'Inorganic' section in chemistry textbooks.
90/100. Didn’t know the one about glass and a few of the astronomy and geology questions.
Started out well, missed more towards the end - esp. physics or astronomy/geology related questions. Scored 86/100. I haven't attended school in 35 - 40 yrs.
Ben, love science and whilst I never actually keep score, I'd say around the 85 mark. I always do well with the science category and the more I do them, the more I learn. That's what it's about.
Glad it was a subject that you love. 👍
89/100 , Incorrect ones were 12 - 22 - 37 - 38 - 46 - 48 - 57 - 69 - 71 - 87 - 99
Slightly disappointed BUT .. Loved it Sir 👏😁.
Nice one. Great to hear that you loved it, that's why make them 😃
Science is somewhat difficult but quite interesting! Thank you for the quiz Sir❤❤❤...
Welcome!
85/100 Great quiz Ben. Trouble is at my age I forget things. 😂🇿🇦😊
Me too. 🤣😁
I'll quibble with three:
convection is the dynamic process, while Archimedes' principle, differential buoyancy, is the mechanism;
light slows at the transition to water from vacuum or air, once within a medium it travels at the speed of light for that medium; and I'd say that an ice object or stony/metallic object can sit happily in a more or less circular orbit (low eccentricity) until some destabilizing interaction launches it towards fair 'helios' where the icy object (maybe sandy dune) grows its characteristic cometary plume(s).
Best score for me yet! 95/100!
Awesome 🎉🏆
Same here!
love it.. played against myself.. barely won..
10:08 I've been waiting for my chance to shine
85/100- my score. The quiz was very informative. Thanks.
I got 92 correct, but if it wasn't multiple choice, I reckon i would only have gotten about 50, maybe less.
I actually tried to cover up the answers for a while so it wasn't multiple choice...
Yes, It is possible to answer correctly sometimes by eliminating the incorrect answers.
I got 79 correct.. and it was really a basic science knowledge that everyone should have.
Great quiz, as always, but the speed of light doesn't slow down while passing through water. A photon travels at the speed of light between its interactions with water molecules.
Glad you enjoyed it. The commonly held view is that light does slow down in water (ref. The refractive index of light is 25% slower when it moves through water), however after further reading on the subject, a more correct answer would be that it "appears" to slow down.
That's accurate! Semantics I suppose, as it takes longer to detect a light source through a body of water than a body of, say, air.
@@Quizzes4Uslows down is completely fine, esp. if you think maxwells equations in media are good and they are. Any reference to a photons is suspect, since a light wave doesn’t even have a fixed number of photons (see Glauber state), and single photon slows down and the speeds back up on the exit….but is you say it’s moving at c but interfering with phase shifted versions of itself, then is it really the same photon, or a coherent copy of the original? idk, why get into quantum mechanics…just say it slows down, or not.
If you look at it classically with jefimenkos equation, then a wave doesn’t have an identity, it’s just an emergent phenomenon related to charges and currents😊 in the pas lightcone…so agin, it’s coherent new wave. Idk…bosons be like that.
Even putting the details aside, it isn’t the speed of light (c) that slows down. That was the bit that stumped me; I thought it was a sort of trick question.
Those I get wrong only becomes new knowledge. Truly a nerd moment for me :)
Number 47 annoyed me convection isn't why hot air rises it's a result of hot air rising. It rises due to being less dense than the surroundings so experiences an upthrust greater than it's weight
The density deviation is caused by convection. The heat tranfer of particles is the cause.
There are a bunch of processes that cause air rising and falling. So it's probably wrong to only give credit to density. If it was only density - then we would've had all of our gases into layers, instead of meshed up together.
21 questions wrong. 79/100. Learnt a few new things from this video. Thank you
84/100, as a 9th class student in india, studying in CBSE board and addicted to science and maths 🙂
Nice work out... not as fit as l thought I was 🙃 Grateful ✌️
33 wrong 😢 and for the question about how the elements react when frozen is they retract, all but one, water, it expands when frozen. Great quiz😊
If you took more knowledge from it ?? Then you won Sir . 😁👍👏
except water isn't an element, and a few other things also expand when cooled
If water did not expand, and become lighter and float, it would sink to the bottom, forcing all the life upwards, and all the fish would die when it freezes completely. Luckily for us, the floating ice keeps the water underneath liquid.
Water contracts like most other matter when cooled....slightly...then, when it gets cold enough to freeze, it forms a crystal lattice when makes it "expand" greatly. Not arguing, just clarifying.
@@quaddawg I learnt at school (many, many years ago) that the so-called anomalous expansion of water starts at 4 degrees C, but it does not solidify until just above 0 centigrade.
I was almost expecting Pink Floyd to be an option for #73 just to make sure we're still paying attention 3/4 of the way through!! 😅
First time getting this channel recommended, really enjoyed it, nicely paced for 100 questions, grahics are clear and simple without offering a potential 'hint' to the answer like some other quizzes I've tried. Definitely will be subscribing and looking forward to trying the other quizzes. Good work. Cheers 👍
Thanks for subscribing 😁
5. "What is the branch of physics that deals with the behavior of objects at very low temperatures?"
A. Cryogenics
B. Quantum mechanics
C. Thermodynamics
It's all three, by definition. Obviously the "very low temperatures" bit was meant to guide people to answer Cryogenics, and if you get literal enough the other two branches don't deal exclusively with cold temperatures, but the whole reason of studying the behavior of objects at very low temperatures involves quantum mechanics (e.g. Bose-Einstein condensates), and you literally can't do low-temperature physics without considering thermodynamics.
I chose A because of what I expected. I wouldn't call cryogenics a branch of physics, but a branch of thermodynamics instead.
I chose thermodynamics because I though "thermo" term basically means dealing with temperature
very good for checking knowledge for class 8-10 as they should learn extra by themselves
73/100.
I’m going to give myself some slack as I haven’t been in school and done science for 6ish (plus) years so not too bad. Still had a surprising about of fun.
88/100, i don't study science but just love learning this stuff
60/100
Dang….
I thought i knew better
I’m still just 15 tho
And I kneen to learn more 😊✊
Thinking you know better, or more, is a sign of an open curious mind. Apply the infinite.
HAHAHAHAHAHAHAHA SO DUMB
Need !!😂
Thank you very much for the refresh, im in eighth grand and got 91, i hope to improbe of this somewhat faliure
94/100 with the options; 70/100 without.
Great stuff 👍
"What is the term for the amount of matter in an object?". It is neither volume, density or mass. This is easy to see since you can imagine a pair of objects, one of which contains more atoms, yet the other one has more volume/density/mass. The term you are asking for is simply "amount" and is measured in mol.
Look up almost any physics or chemistry book to see the definition of mass and it will be given as the amount of matter in something.
@@robynreed6368 What's that? An argument from authority? It is still wrong unless you attack my statement via its content. Wikipedia by the way is sophisticated enough to write "Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a body, until the discovery of the atom and particle physics."
I guess you could say mass, because mass effectively conveys the sense of it--how many subatomic particles are in the object. You don't want to say how many atoms because atoms of different elements have different numbers of subatomic particles.
I would argue that while moles describe the number of nuclei, the amount of matter is more likely described as what affects space-time more / has greater gravity, which we measure as mass.
The amount of matter is measured in mass.
1 mol of carbon (12 grams) has a different mass than 1 mol of sodium (23 grams). This is because sodium has more matter (protons, neutrons, and electrons) than does carbon. Mass truly is measuring the amount of matter - protons, neutrons, and electrons that make up the atoms.
got 85 correct, some are extremely easy some I never heard about. Physics/engineering was my trouble
In number 23 perhaps hydronium would be a better answer than hydrogen, the p representing the negative log of the hydronium ion concentration. It's kinda hydrogen, but kinda not.
Correct hydronium not hydrogen
I did very well on this 1uiz, 95/100. I enjoyed it very much. Thanks,😄👍 Ben.
Very nice. New geography quiz out soon here. Plus there a new quizamp quiz just out on my second channel. Just saying 😉
@@Quizzes4U Thanks a lot, Ben. I love Geography. I'll look for the new quiz😁
95/100
80%
With a grade 8 education.
I saw the picture of the prism (#73) and the first answer that popped in my head was Pink Floyd.
86/100 A few lucky swags (scientific wild-ass guesses) and missed some I should have thought about harder.
68/100 I'm crap at science!
That's still good. Thanks for giving it a go. 😃
I got the same score as you but that was a lot higher than I expected to get.
I'm willing to bet that that score is way above average these days. Bet you'd do far better if you took it again!
Humanities student here but still got 70 correct. I guess everyone should have this much knowledge of science.
Great quiz, Ben. Thank you. Score today is 98/100. It is always fun to do your quizzes and I always learn something new. 👍
Excellent!
so which two i got to know
I missed #'s 73 & 87. @@bethtp1
96/100. Nice quiz, although there was no right option for the convection question. The reason why hot air moves up is the _difference in densities_ and the term convection just refers to the fact that we have transportation of energy as a _consequence_ of that movement.