Air Pressure - Science Theater 4

Can-crushing, balloon-inflating, juice-box-drinking action in this study of air pressure: how it happens, what it is, and why.

Category:

Education

Tags:

• science
• physics
• education
• demo
• chemistry
• pressure
• temperature
• juice
• box
• juggling
• can
• crushing

[TheSteady0]

Got a question here: You said that it's the atmosphere that is "doing the work" when we drink with a straw from a juicebox. So hypothetically, if I were on lets say Mars, wouldn't that still work since there barely is any atmosphere there and if not then how?

[sciencetheater]

@TheSteady0 It would be harder to drink from a juice box on Mars since there would be less pressure from the Martian atmosphere (unless you were in a space suit or a dome, of course...). If you were in a vacuum, the juice -might- flow out of the box but it would be a tiny trickle... you'd want to squeeze it with your hand. Of course, if you were in a vacuum, you have other things to worry about...

[n0usernameforme]

Does this mean there is less air pressure in our home because in the home theres not miles of air pressure above our head theres only enough to fill to the ceiling?

[sciencetheater]

@n0usernameforme No. If you closed the windows and sealed off your house from the outside, and then only let a little air in, then there would be less pressure on you. But since the outside air is "squished" into your house it still counts as having miles of air over your head.

[sekky123]

question) how come as you go up pressure increases yet you've got less and less pushing you down from above?

[sciencetheater]

Hmm, I typed a reply but it's not here...

As mrkjclu says, pressure does decrease as you go higher. However, you might be thinking the pressure in your ears "increases". What happens there is that the pressure in your ears stays the same, so it begins to push out against the (now) less pressure outside your ears, so you feel "pressure" in your ears when you go up in altitude.

[rshngmz12]

nize 1. u r exelent.

[n0usernameforme]

@sciencetheater Oh thanks for explaining i get it! when air is squished from above pressure tht air gets pressed into the house :)

[mbshus]

Thanks for the incredible demonstrations! My son is doing homeschool and this will definitely help! (I hope he waits until he's with his father to do the last one though! LOL)

[Olliedog317]

nice juggling

[deneve3]

lol. haha

[levon]

hahah funny