Why does ice float?
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- Опубліковано 31 бер 2014
- Why does ice float? You might not think about it, but this special property of frozen water is what makes your iced tea tinkle and makes a lot of aquatic life possible. Hank gets in touch with his inner Olaf to explain the wonder that is ice.
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Ice is so METAL! It's swimming in it's own blood!!!!
Fucking *BRUTAL*
Even more Metal then you think cause it sank the titanic .
BurpAtTheMoonAtNoon actually ice is non-metal
I like how Hank keeps such a straight face. This is a Fantastic April fool joke, I mean seriously we all know Ice floats because of arcane Elf magic, left over from the pan-galactic penguin war, of 75 million B.C.E.
Ikr? That's common knowledge now. 😂
Thank you so much for this, Hank. We did this in class but this helped me gain a better understanding.
Thank you Hank!!! Ive been wondering about this for ages and now my questions have been answered :)
I woke up wondering about this this morning and immediately thought, SciShow HAS to have answered this before. Did not disappoint! I assume this is also why ice takes up more space than water?
Thanks for making this video! I really love that "ooooh, that's why" moment!
I can't believe I'd never thought about why ice floats before. Fantastic information, thanks. This also explains why when water freezes it has a slightly larger volume.
Coincidentally, this is exactly what I've been learning about in science class for the past week or so. I learn as much in a 3 minute video as I did in a week in science class.
I already knew the answer to the question. But I still learned a few things! Thanks hank!
Wow amigo!! Veo tus videos hace años!! Muchas gracias!!
With the recent large earthquake down in Chile, perhaps you guys could explain the Moment Magnitude Scale and the history of scales we used to use like the Richter scale in measuring seismic activity. You know, just an added bit of awareness.
It's odd, living in California I still know a number of people who say that something registered "x" on the Richter scale and I keep having to correct them.
Nice topic, there is a lot of math and cool stuff there to know. Here in Chile we use Mercalli for quick reference but Richter is the norm. Richter is an exponential scale in terms of liberated energy, so a richter 8 is ten times more energy liberated than a richter 7. If you are close to the epicenter, then you REALLY feel the difference, but the energy gets rapidly disipated with the distance. Also how deep the plates/fall are (where the earthquake really took place), helps to disipates the energy very quicky. So a richter 8 at 100 km under the surface is a lot less destructive than one at 10 km from it
And then there are tsunamis
***** We don't use Richter Scale anymore, we now use Moment Magnitude Scale, abbrv MMS or Mw. It is the scale use by USGS(U.S. Geological Survey). It is still quite a common mistake to associate Richter Scale with magnitudes, because the latter retains the former magnitude values.
Matt Thompson Even I, who was brought up on "how good America is" have come to realise that kind of attitude don't win the world over.
You should have an episode of water alone. All of its amazing properties, I am sure some people do not know a few of them. Water is simple too amazing!
Thank you! I've been wondering this for nearly all my short life!
Best explanation ever !
hmmm.... this actually answers another question of why water expands when frozen..... interesting.....
I can not wait to use " icy bevy" in a convo haha .. Love Sci Show :)
The first SciShow video that I have learned nothing, But still well explained Hank ;)
Thank you Hank!
this video was amazing, I learned so much! This is such a fascinating topic. :)
I'm really glad that scishow did this topic! Such an amazing thing!!! If it wasn't for this simple fact, life on earth, as we know it, would not exist :) just goes to show you how everything conveniently works to support life :) it's a big "wow" thing for me... but I'm a nerd haha
loved this
Interesting, i didn't know this!
Thank you!
Thanks for this concise explanation of a question I've been finding out the answer to and then forgetting again for quite a while! :P I was first asked by a friend who looked at a puddle and said 'how does the water get under the ice?' which really should have been 'why is the ice floating?' - I worked it out eventually!
Thank you! i asked this question a while ago and now i know the answer :D
The CC are just hilarious!
Awesome, thanks for the answer Hank :-)
Great video. I already knew why ice floats but it was still a good video. Can you talk about what happens to ice under lots of pressure and under really cold temperatures like on another plant or moon?
Wait... Where's the April Fool's video? You've got to make one!
The April Fools is that you expected an April Fools video.
Mark Casey
MIND = BLOWN
OOOOOOOOOH!
Thank you so much for making this!
It came up in ninth grade that Ice was less dense than water, but no one seemed to know or care why and how.
It's bothered me ever since.
I mean I could've googled it, but it was more of a "Think about it when I can't look it up" kind of thought.
So thank you!
Water is so awesome.
As a follow up question... why do we freeze dry foods instead of just freezing or drying them?
Or maybe a quick episode or link about Spring/Fall Lake turnover and why the bottom of a lake is going to be ~4C?
Thanks for making this hank , I showed this to my friend to help her do her homework XD
God this is such a useful channel!!!! XD LOVE IT
wow. learn a lot from this
Well, this video also answered the question of why is water the only liquid to expand when freezing
I don't say this very often but this video just opened a floodgate in my mind. The idea that the fact water freezes and floats allows for life to exist really proved how much of a miracle it truly is.
Is it though? If it 'did' freeze from the bottom up, we wouldn't exist to ponder the fact that it froze from the bottom up.
I love Hank.
I just learned this in science today... Extra lessons for the win
thank you! this helped me so much with my homework
I love that I'm taking college chemistry atm, I was familiar with almost everything you said. :D
Asking the heavy questions on SciShow
Thank you for not doing an April fools thing. It means a lot to me.
when did scishow reach 1 million subscribers? I've been subscribed since 200k and i just found out they has 1 million.
When your cast pure metal (with no slag) into a mould the last part to freeze is the inner centre, whereas if the solid metal was denser then the last part to freeze would be the top as the heavier solid would sink to the bottom. Most liquids other than water, mercury don't exist as such in nature, hence we don't see them freeze. I suspect that when alcohol, or any other liquid is is frozen, the top would freezes over just like water and not sink to the bottom as the clip suggests it should.
Question: Which are your favorite colloids?
Peanut butter.
It would be helpful to have illustrations of other molecules to compare with H
2O, and illustrated how the molecules in each of several elements lineup when in a solid form.
Omg! I always wanted to know this
Let's go basic, why is the sky blue? and why is grass green? I know the answers but it would be a great video topic!
AllanFrankland Oh dear.
Hello Hank and everyone at SciShow. I would like to know why the earth tilts? Why doesn't it just stay level? Thank you. And keep on, keepin on.
COOL !
Great answer, could have spent a few more seconds on ice crystals maybe though?
Ice is so badass. It just floats around in its own blood.
Now I know why my heart floats when I throw it in my toilet
I forgot that Scishow Space was a separate show and was wondering why there was a second Scishow episode until I was halfway done.
Why do we suddenly forget something we know really well, momentarily? Like a name or an answer in an oral exam
The polarity of H2O is also why water vapour and CO2 is a greenhouse gas.
It would be most excellent if you could do a video on GHGs and why their polarity makes them so.
would love to see a scishow episode on the action of buprenorphine, and how it's different from methadone, morphine, or naloxone. what with P.S.H.'s tragic recent death and the occasional history of scishow's coverage of drugs and drug issues i think it would be a timely and interesting show. thanks!
how does this help us in life
an interesting video would be "why do denser materials sink? "
another good question I like to know is why do ice forms pillers, moving upwards as it freezes...
It's rare that I already know what Hank is talking about... :)
Glad this wasn't an April Fools video
Its also like when u fill a bottle to the top with water and when frozen the bottle expands and cracks to the point where the bottle breaks cause when freezing ice tends to expand
So... is it possible that water has another molecular configuration in which it is solid but doesn't have the "holes" so it is actually denser than liquid water?
Definitely not under any kind of realistic circumstance. I believe somewhere around -130°C Ice gets amorphous but i don't know what happens with it's density then, it's also just something that I've heard somewhere so don't quote me on it.
Todesnuss Yup, (Very) High Density Amorphous ices can be formed at pressures higher than you would see on Earth and have densities greater than water when returned to "normal" conditions.
Cool now I can get this one right on quizup
Why do things squeak?
Even tho i know/can find any explanation.... its still an interesting topic.
I'm guessing friction. Old things like doors or wood floors may squeak because the nails have come loose or the board may have warped or something? I don't know, but that's what I always assumed.
My eyes squeak when I rub them. I've always wondered if that is normal.
Why do we shiver
Video on polarising light or other waves please
I always wonder what keeps the clouds from either floating away or falling to the ground. The thickness in atmosphere for the floating away right? Then what, the clouds being more dense than air as to why they don't just fall to earth?
It probably has something to do with density, but I believe it also has to do with the wind keeping it afloat like a plastic bag floats through the air.
If I remember correctly, clouds are congregations of little specks of whatever in the air that gather condensation from the air around them. As the particles gather more and more condensation, the clouds get darker and heavier and they sink. This is why storm clouds are low to the ground and thin while the white ones are really high up and poofy/wispy. Eventually the specks become water droplets and become too heavy to float, so they fall to the ground.
(Someone please correct me if I'm wrong.)
Ryan Harding ThexXNAZIxZombiExX Okay. Thanks guys!
Now explain liquid ice :P
It s actually a question that i ask myself almost everyday
This broke the ice. Parden the pun.
i-cy what you did there
Wat-er you going to do now?
Whatever floats your boat
I don't snow if I like where this is going...
I sea a wa-ter in the cafe.
Did he say a "Sci-Show Chocolate Bar" at the end....ummm Hell Yeah!!!
I have an odd question for SciShow.
Why do we react to things happening to our player or avatar in a video game as if it were happening to us in real life. For example, why do we say "ouch" when our avatar is injured, lean when we're taking a sharp turn in game, or cringe when we're trying to beat a difficult jump or other in-game obstacle.
I've always known it was the crystals, but I never knew why the crystals formed.
Given the recent Earthquake in Chile yesterday, could you explain the Richter Scale?
what i was told as a kid was
1) ice is up to 10% trapped oxygen
2) the cold air on top makes it easier for the water to freeze unlike at the bottom
3) the other areas are constantly moving and/or unable to sustain such temps.
Pfft, uploaded on first of april! Not gonna trick me!
...
jk
I have heard that ice frozen under extreme pressure can assume a more dense structure. I think it was called ice vii or something like that. That would be an interesting topic.
I've already learned this in physics!
I also know that it's not *just* density, it is the weight of the water an object displaces. That's why boats made of a heavy material like iron can float; they're shaped specifically to displace as much water as they can (they also have air inside them, but that's not the only reason a boat can float. A hollow iron cube or ball would sink.)
A hollow iron cube would float if its average density was less than water. If it was much less than water, more of it would be on the surface.
Yes/no.
Yes in that you're right. No in that that doesn't change that it's just density.
As others have already pointed out; the thing is what you're really explaining is not only specifically why water floats, but why things float in general. Things that are less dense will float on things that are more dense, regardless of the medium.
At 1:59 I totally read that distance as 95.84 petameters at first, which is a smidge over a light year. Obviously they meant picometers, but one needs to be very careful with the capitalization of metric prefixes.
I actually knew all this for once!!!
That explanation is all fine and dandy, now please explain why guinness floats in a Black and Tan!
nitrogen is in guinness.. CO2 in most other beer.
l find it amazing that most of water's awesome properties can be explained byt its hydrogen bonds.
I know salinity lowers the freezing point of water and that's why the water (oceans)
in the poles don't freeze. But why does only the surface of a pond or lake freeze?
578 views? what's with 301?
I'm actually kinda dissapionted that this was a legit sci show episode and not an april fools day joke, especially considering that I already knew everything in this video.
Even though I understand it, my mind still boggles when I see huge oil tankers and military vessels sitting happily on the ocean surface. I know it is all about the relative volume of displacement and average density, but my mind is also screaming "a thousand tonnes of steel should not float"!
You missed a opportunity to say "thanks to our Subbable subscribers for keeping us afloat" I feel that would have made it much awesomererer
We were just talking about this at school :D
Can we ask questions we already know the answer to, but want others to see a reliable source for?
I suspect the answer is yes, but idk.
Hank please clear this up, water will never freeze from the bottom, because how earth's atmosphere works it puts pressure onto the water. More pressure you have harder it is to freeze or boil a liquid. Therefore, the water on top has less pressure and always freezes first. If it was to freeze from the bottom up, that suggests that the water on the bottom has less pressure which cannot be possible on earth.
I have a question! how does AC current work exactly? I'm generally pretty smart, especially with science, but for some reason i just don't get alternating current. More specifically how do you make it alternate?
I have a question, you said the molecules have space between them in ice form. What is in the space, is it air from the surroundings or some kind of vacuum? If it was an a single atom wouldn't that change the molecule?
I don't think neat and swag are able to be used in the same sentence.
Wow
Why do the floating cheerios in my cereal bowl seem to wanna 'stick' to each other or the to side?
same answer for why water sticks to almost any surface, EM force.
Are there any other molecules that behave this way?
Really someone didn't know this?
Actually not this detailed. It floats that we all know. But why i think most people dont know that. Or cant remember learning that.
So thanks for the refresh course scishow.
I forgot about the exact reasons apart from density.
What? 5 days ago? UA-cam did a joke?
Daniel B Mystery of the internetz
In my High School Physics class there were a few compasses that pointed South instead of North. What can cause a compass to do that?
Magnets.
Ok, I'll elaborate: You can flip the magnetic alignment of a compass needle by exposing it to another, stronger magnetic field.