What Do These Things Have In Common?. These objects need air pressure to work!. What is Air Pressure?. What is your guess?. Air Pressure…. pushes on everything it touches! is all around you! BUT…… I don’t see it! I don’t feel it!. Air Pressure Pushes Down on Pig Pen!.
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These objects need air pressure to work!
What is your guess?
by air pressure?
1. The matches warm the air in
the bottle. When air is heated,
it takes up more space, and it pushes
against the sides of the bottle.
2. Some of the warm air tries to escape
out of the bottle.
3. And when the matches go out, the air in the
bottle becomes cooler.
4. The cooler air takes up less space.
5. Now, the air outside the bottle pushes with
greater power than the air inside the bottle.
6. The greater pressure outside
pushes the egg into the bottle!
You have air inside of you. It pushes out with the same amount of pressure that the outside air pushes in on you.
Air pushes in all directions!!
Let’s try an experiment!
Have your ears ever popped when you’ve gone up a mountain or up in an airplane?
Do you know why?
Up here I have little weight on me. I feel little pressure.
The higher you go, the less air pressure
Your ears pop
are trying to
make the inside
Down here I have lots of weight on me. I feel high pressure.
Calvin & Hobbes are climbing to the top of a mountain. Will the air push against them more or less when they reach the top? Explain your answer.
Find out how air pressure can make the weather be sunny or rainy!
What’s your guess??!!