Question

5
select all the correct answers.
the water is poured out of a water bottle, and then the bottle is capped tightly. which statements describe how air pressure affects the bottle?
□ the air outside of the bottle pushes inward on the bottle.
□ air pushes harder on the top of the bottle than on the bottom.
□ the air inside the bottle pushes outward on the bottle.
□ air pressure changes the shape and size of the bottle.

Explanation:

When water is poured out and the bottle is capped tightly, the amount of air inside the bottle increases, but its pressure is lower than the atmospheric pressure outside. The higher external air pressure pushes inward on the bottle, causing the bottle's shape and size to change (it collapses inward slightly). Air pressure acts uniformly on all surfaces, so it does not push harder on the top than the bottom, and the lower internal pressure cannot push outward against the higher external pressure.

Answer:

• The air outside of the bottle pushes inward on the bottle.
• Air pressure changes the shape and size of the bottle.