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DeverScience
United States
Приєднався 15 січ 2012
What is science and how does it work in the real world? This channel helps students and other inquisitive people understand how science is happening all around us. It's not just for rocket scientists and math wizards, science can make sense to everyone.
Absolute humidity, Relative humidity and Dew point - V.2
Thank you for your feedback! This version includes updates such as celcius degrees and grams instead of mL for water quantity. Stay curious my friends!
Ever wonder why the grass has dew on it some days but not others? Do you want to know why fog and clouds seem to appear out of thin air? Absolute humidity, relative humidity and dew point help to explain these phenomenon.
Dever science website: sites.google.com/view/dever-science?usp=sharing
Image credits and attribution:
Hygrometer
creativecommons.org/licenses/by-sa/4.0/
Attribution-ShareAlike 4.0 International
Clouds
www.rawpixel.com/image/6039428/photo-image-desktop-wallpaper-cloud
Canonical URL creativecommons.org/publicdomain/zero/1.0/
Dew on grass
negativespace.co/grass-dew-rain-drops/
CC0 1.0 Public Domain
Rain
picryl.com/media/raining-till-2am-unsplash-819d2d
Public domain photograph of rain, free to use, no copyright restrictions image - Picryl description
Thermometers - Winter and summer temperatures ai. (I separated the two original thermometers which were in one image)
creativecommons.org/licenses/by/4.0/
vectorportal.com/vector/winter-and-summer-temperature.ai/11471
Ruth Hartnup
Sunny Day at Alpha Lake Park
www.flickr.com/photos/ruthanddave/29438390488
creativecommons.org/licenses/by/2.0/
Ever wonder why the grass has dew on it some days but not others? Do you want to know why fog and clouds seem to appear out of thin air? Absolute humidity, relative humidity and dew point help to explain these phenomenon.
Dever science website: sites.google.com/view/dever-science?usp=sharing
Image credits and attribution:
Hygrometer
creativecommons.org/licenses/by-sa/4.0/
Attribution-ShareAlike 4.0 International
Clouds
www.rawpixel.com/image/6039428/photo-image-desktop-wallpaper-cloud
Canonical URL creativecommons.org/publicdomain/zero/1.0/
Dew on grass
negativespace.co/grass-dew-rain-drops/
CC0 1.0 Public Domain
Rain
picryl.com/media/raining-till-2am-unsplash-819d2d
Public domain photograph of rain, free to use, no copyright restrictions image - Picryl description
Thermometers - Winter and summer temperatures ai. (I separated the two original thermometers which were in one image)
creativecommons.org/licenses/by/4.0/
vectorportal.com/vector/winter-and-summer-temperature.ai/11471
Ruth Hartnup
Sunny Day at Alpha Lake Park
www.flickr.com/photos/ruthanddave/29438390488
creativecommons.org/licenses/by/2.0/
Переглядів: 988
Відео
Weather - High and Low Pressure - V.3
Переглядів 63214 днів тому
Confused by the meaning of high and low pressure? Watch this video for a simple and easy way to understand and visualize this phenomenon and the weather it creates.. Special thanks to all my viewers who provided the feedback and comments that are reflected in this updated version!
Gas has Mass
Переглядів 9014 днів тому
Can I prove gas has mass with just a few things you might find around the house...
Speed of sound vs. speed of light
Переглядів 392Місяць тому
Is light or sound faster? Watch this video and decide for yourself! Dever science website: sites.google.com/view/dever-science?usp=sharing Student Worksheet docs.google.com/document/d/1bZC5zc_OChuZD977CaPtk0eYDxAvQToANm_3FuUQoqc/edit?usp=sharing
Hello from DeverScience
Переглядів 428Місяць тому
Hello from DeverScience! Dever science website: sites.google.com/view/dever-science?usp=sharing
Absolute Humidity, Relative Humidity and Dew Point
Переглядів 14 тис.Місяць тому
Ever wonder why the grass has dew on it some days but not others? Do you want to know why fog and clouds seem to appear out of thin air? Absolute humidity, relative humidity and dew point help to explain these phenomenon. Updated video version 2 - ua-cam.com/video/rbsJVqbiSBo/v-deo.html Dever science website: sites.google.com/view/dever-science?usp=sharing Image credits and attribution: Hygrome...
I built a working model of the water cycle!
Переглядів 7034 місяці тому
Check out this great model to help understand how the water cycle actually works. Learn the meaning of evaporation, transpiration, respiration, sublimation, condensation, precipitation, infiltration, surface runoff and accumulation. All of this is made possible by the energy from the sun and the force of gravity! Dever science website: sites.google.com/view/dever-science/home Credits: Water Cyc...
Peaceful Ozarks: music and scenery
Переглядів 845 місяців тому
Enjoy these peaceful scenes from the wintry Ozarks. Music for relaxation and studying.
Ocean Currents: How they work and why they are so important
Переглядів 1 тис.5 місяців тому
Learn about earth's own built-in heating and cooling system. Find out what makes the ocean currents move and why it is so important for all of us! Dever science website: sites.google.com/view/dever-science/home Picture/Animation Credits and Resources used: NASA Kids - animation of earth’s currents climate.nasa.gov/explore/ask-nasa-climate/3266/slowdown-of-the-motion-of-the-ocean/ NOAA - How do ...
Weather: high and low pressure
Переглядів 14 тис.5 місяців тому
What is high and low pressure and what kind of weather conditions can you expect to come with each? Watch this super obvious example of how this works! Link to updated video version 3 - ua-cam.com/video/KpEhVerM-yY/v-deo.html Dever science website: sites.google.com/view/dever-science/home Picture Credits: Weather map: www.weather.gov/lzk/ Anemometer: vectorportal.com/vector/anemometer/31438
Spot Hogg Fast Eddie repair - breakdown and reassembly
Переглядів 5696 місяців тому
My spot hogg archery bow sight lost its silky smooth operation and started getting rough and sticky. Here is how I took it apart, cleaned it and reassembled it. Now it works like new! DON'T USE RED LOCTITE like I did;0. It was such a pain to get the alan bolt back out of the brass slider knob when I assembled it in the wrong order the first time! Watch this video for the right way to put it tog...
What causes the wind?
Переглядів 5996 місяців тому
Wondering where the wind comes from and where the wind is going? Watch this straighforward explanation with a visual that will make it easy to understand. Student Worksheet Link: docs.google.com/document/d/1KVypo8aY6esEqjvjutGYNmU7SssYgjBk7hUnXdqVMNU/edit?usp=sharing Dever science website: sites.google.com/view/dever-science/home Picture Credits: Land and water www.flickr.com/photos/djking/2106...
What is convection?
Переглядів 6807 місяців тому
Confused by convection? Watch this short video that makes this concept make sense. Convection is the movement of fluids due to diffences in density within that fluid. It is usually hard to see but this video makes it obvious! Student Worksheet Link: docs.google.com/document/d/1OPRmWtgAi6sq-Em48tTrGOdaTo2UiXN8MNMz4zYgycY/edit?usp=sharing Dever science website: sites.google.com/view/dever-science...
Translucent, opaque and transparent. Reflect, transmit, absorb.
Переглядів 2048 місяців тому
Translucent, opaque and transparent. Reflect, transmit, absorb.
Controlled Experiments: Identifying variables
Переглядів 1748 місяців тому
Controlled Experiments: Identifying variables
2012 honda pilot accessory/serpentine belt removal
Переглядів 1,3 тис.8 місяців тому
2012 honda pilot accessory/serpentine belt removal
Make your own aquaponics system with your fish aquarium!
Переглядів 7 тис.10 місяців тому
Make your own aquaponics system with your fish aquarium!
Middle school science video resource for teachers!
Переглядів 13210 місяців тому
Middle school science video resource for teachers!
Become a controlled experiment pro! Variables simply explained!
Переглядів 29110 місяців тому
Become a controlled experiment pro! Variables simply explained!
Are those actually giant eyes on this caterpillar!
Переглядів 85611 місяців тому
Are those actually giant eyes on this caterpillar!
It's a moving leaf! What is this thing?
Переглядів 12111 місяців тому
It's a moving leaf! What is this thing?
What is density? Understanding the density formula.
Переглядів 18111 місяців тому
What is density? Understanding the density formula.
Caterpillar in leaf home hangs by a thread
Переглядів 5211 місяців тому
Caterpillar in leaf home hangs by a thread
Could you make a bow shot at 120 paces? Watch as I attempt to relive the legend of William Tell.
Переглядів 18011 місяців тому
Could you make a bow shot at 120 paces? Watch as I attempt to relive the legend of William Tell.
Correctly using a graduated cylinder
Переглядів 61611 місяців тому
Correctly using a graduated cylinder
Correctly using a digital thermometer.
Переглядів 6211 місяців тому
Correctly using a digital thermometer.
Awesome presentation!
So, warm/low pressure would create rain/storm clouds and cool/high pressure would raise humidity and potentially form fog? Also, is that why morning dew is a thing, since nights are cool?
Here is the full video that explains it a little more. ua-cam.com/video/KpEhVerM-yY/v-deo.html
How has Disney not sued this school for making education fun?
I'm just waiting for the legal summons;)
Hey, man, awesome video, but can you help me out? my comment I posted when I first watched this video has vanished somehow, yet I am still getting replies, and so I cant give likes to your reply or anybody elses! I can't even see the full reply since some of them are longer than the notification window shows :( what can I do to fix this? p.s. I can't even read what my own comment is! I dont remember what I said, and it wont show me :(
That is weird. I actually have made several versions of this trying to improve each time with feedback, collaboration from others etc. They all have the same thumbnail though. Maybe you commented on an earlier version? Also if you click the little "X" on the tab that says "I haven't responded" you may be able to see it? I have that issue with my comments. I have to turn that off or I only see new comments. Anyway, hope that helps. I'll post the link below for my most recent version of the video. No major changes just some stuff to make it a little more widely applicable (metric system throughout etc.). ua-cam.com/video/rbsJVqbiSBo/v-deo.html
Sacrifices shirt cuff dryness for eductional purposes. My man! I'm a lifelong science nerd, and I approve of everything in this message. All except Cruella, she's the worst!
Ha! That was a big sacrifice having the wet cuff...I survived though;)
its called mash-hoosh in my country
Interesting! What country is that?
@@christopherdever5536 Turkiye, south east region. They can grow up to a thumb size, when we were kids, we used to capture them by flooding their underground homes with water. Their big arms have an enermous abduction force they use for digging, also same arms have elbow like joint that used to prune vegetable roots, also these creatures fart a muddy-juicy-slimy-sticky-smelly substance as a defence mechanism.. Finally, we used them as bait for fishing 😁
High-pressure and anticyclone are same or different please tell me
That's another name for it. Here is a website with a glossary of some weather terms. Cheers! forecast.weather.gov/glossary.php?word=CYC
Wait... I thought that hot areas were of high pressure while cold areas, low... 🤔
I think it is easy to confuse the cause with the effect. The denser and cooler falling air begins to heat up due to the adiabatic effect (basically it is getting compressed as it has more and more atmospheric pressure on it). Also the clearer skies are accompanied by solar warming.
Jutsushiki junten: *AO*🔵 Jutsushiki hanten: *AKA*🔴 🫸🔵🔴🫷 Kyoshiki: *MURASAKI*🫴🟣
What a great model. Learning is the best.
So a low pressure system would bring rainy weather? And, if the hot air tends to rise up and cold air low down, why isn't always cold?
Here is my full video that explains a little more. ua-cam.com/video/KpEhVerM-yY/v-deo.html
I bet you are the favorite teacher for many students. Very nice demonstration
Thank you!
Is this an unarguable argument proving a Globe Earth? Im always on the lookout for perfect, open and shut arguments to present to Flat Earthers, arguments that speak for themselves and avoid the need to engage in a debate, because that is a truly futile endeavor.. I haven't come across this being used before and unless theres some concocted pseudo-reasoning within the Flat Earth 'theory' that can be made to refute it then it might be something new that they haven't seen before and therefore unprepared for.
Fascinating idea! I'm thinking about doing a video with practical experimental approaches anyone could do to demonstrate a flat earth is inconsistent with some basic experiential data. Still working on making up a list though. Hadn't though about this video being linked. What exactly did you connect as evidence? I suppose having two regions of the earth that are always colder than the others would be difficult to explain with a flat earth...unless you concocted some really weird solar system model. hmmm.
I really liked this. I would have taken the opportunity to explain the effect of the horizontal blue current moving towards Cruella, and say that she would experience some nice cool breeze. This experiment explains wind. Very powerful.
Yes! Thanks for that comment! This was an incomplete video that I followed up with a more fully explained one. The youtube algorithm really liked this one though! I made a follow-up video on what causes the wind with the same demo. I will link them below. Cheers! ua-cam.com/video/KpEhVerM-yY/v-deo.html ua-cam.com/video/jXR8wkjOjW8/v-deo.html
goofy never recovered from his headache
High pressure is tough.
He'd be fired where I live teaching this binary pressure nonsense. Pressure is an infinite spectrum, where it can be any pressure at any time.
Hmmm. Tell me more? My first year middle school students are encountering high and low pressure conceptually for the first time with this demo. Do you mean that my simplistic demonstration would cause students to believe that high pressure only happens in polar regions and low pressure in tropical regions? We follow up this lesson with a lot more explanation of how temperature and pressure is very much relative to the surrounding air.
@@christopherdever5536It was a joke, I thought it was a great lesson!
These videos help more than you know. Thank you!
Glad you like them!
Thank you, because it did not answer on part 1 from class
Break it
This happens in the ocean but on a massive scale.
Yes! ua-cam.com/video/q_USR2A7Am4/v-deo.html
Well I wish I had your class in school. If only it was the early 2000s Haha
This makes me wanna go to college and study meterology (i chose not to to college after highschool)
Camera operator got a whole storm in their respiratory system.
Allergy season:(
now I surely know that convection currets are in water and in air, and now i can describe the process XD thanks :D but I'm sure they are way more complicated than the example.
I only wish it was as simple as our middle school introductory lesson;) This is why we need people who study this stuff for a lifetime. I will link my full video below. Cheers! ua-cam.com/video/KpEhVerM-yY/v-deo.html
Thank you! If you were my school physics teacher, perhaps I would now pursue a career in this field.
Ha ha! Thanks! Funny thing is I had a junior college teacher who almost ruined physics for me. Thankfully I had a different lab instructor who saved my grade and my love for physics.
Wonderful teacher, your efforts are appreciated
Genius idea!
4:59 occluded front
Always remember throughout your life that if you love what you’re doing it will always shine through! Clearly this man loves teaching and he’s very good at reaching his students. They’re lucky to have him. ❤
Many thanks!
Sr., as a science teacher and after having climatology classes in my post grad. I can only say that this is genius level demonstration with analogy + storytelling. I already said sometimes to students "imagine the atmosphere as we are all in a huge close air aquarium", and air pressure columns in a mountain and at sea level as similar to our crushing sensation in the ears as we go more than a couple of meters deep in a pool, but this is the cherry on top of all that analogy cake! 😂👏 Definitely subbed 👍
Yes! My understanding of these dynamics changed so much once I started seeing us as swimming in the atmosphere rather than merely breathing it. Thank you for the encouragement.
Good science
Comment for the algorithm.
Great explanation. It’s pity when I studied in school I don’t have this type of teaching. Thank you
Glad it was helpful!
VIEWER TIP: Watch this at 1.25x speed 👍🏼
I already knew this because of a one-off fight scene with Natsu in Fairy Tail lol
What a great demonstration. Have been using the cold falls/heat rises principles to pack picnic baskets and transport groceries for 50+ years but, have never thought of how it relates to atmospheric pressure or even the actual meaning behind high and low pressure before. I love that l'm never too old to learn stuff. 😊
So how did you use this to pack picnic baskets and groceries? Ice and cold stuff on top? Thanks for the comments!
@@christopherdever5536 Exactly that. Ice packs on top in an insulated basket.😊
It's funny because I used to put the ice pack on the bottom!
@@christopherdever5536 Good lord! That IS funny. Except ... now you've got me wondering which one of us was correct and if it matters in something the size of a picnic basket. Please do a comparison and make a short. 😁
It makes me sad that there's such teachers out there that are being disrespected by the retarded students by non stop blabbering.
I forgot everything I learnt about fluids
You are a really good teacher. This video made me happy. Thank you sir.
You are very welcome
nice reminds me of my physics teacher he was cool
isn't it something people just know ?
My god, this teacher explaining stuff to what I can only imagine is a pack of teenagers like they're some kindergarteners Pretty solid explanation, though
I don't see what's wrong with teaching things in simple, easy-to-understand terms
Ничего не понятно , но очень не интересно
Имеет ли это больше смысла? ua-cam.com/video/KpEhVerM-yY/v-deo.html
Why do people talk about a storm being a low pressure system and why do heat waves correpond to a high pressurr system? This seems to show the opposite.
Check out this more complete video for a little more info. ua-cam.com/video/KpEhVerM-yY/v-deo.html
Also high pressure systems tend to bring in clear skies which leads to solar heating of the surface. So the cause and effect are different.
High Happy, Low Lousy. Got it. But is this movement between high and low pressure what causes tornadoes?
Great video - I came here after escaping the video where your students watch ... noisily ;) The demonstration is great for explaining everything from a sea breeze to room air circulation where you turn the heater on. *But* large scale weather systems are sadly more complicated. I kept struggling again and again with more advanced concepts, because I was retrying to apply these ideas where they don't belong. As a challenge - just pull up a weather map like windy/com and show that a low pressure system coincides with higher than average temperature. It may work for a tropical cyclone or some "thermal lows", but midlatitude storms are driven by different mechanics. When talking about cyclogenesis, we're dealing with rossby waves, wind shear, jet stream divergence and all that nonsense. And even after more than a lecture of environmental physics I can't tell you how exactly it works, what is cause and what effect -_- There is a reason people study meteorology their entire lives ^^ The "warm air rises cold air sinks" explanation is great, but it only gets you so fair ;)
I get the same feeling when I go past the weather basics. The principles and patterns work in isolation but get incredibly complicated in the dynamics of the real world. I guess everyone needs a starting point though. Thanks for your thoughtful comments!
But why can there be weeks of sunny days in a city without cloud formation? Wouldn't the heated surface of the city eventually form condensation while rising up? And what are the cases where the air would be hotter in the atmosphere than on the ground? It's usually vice versa
Dude explained pressure by density.. moron)))
Well think about it though. Would your rather be under a cubic meter of rock or styrofoam? There is a "column" of atmosphere above you that presses down and it's density is affected by temperature. Then of course it starts moving and that changes the pressure too.
This a such a good demonstration
This is so awesome I wish schools in India teach practically like this🎉❤