Understanding Air Pressure and Its Effects

What is the approximate pressure exerted on every square centimeter of our bodies?

• 1 kilopascal

• 1000 kilopascals

• 103 kilopascals

• 10 kilopascals

What happens to air molecules inside a bottle when they are heated?

• They remain unchanged.

• They disappear completely.

• They move faster and need more space.

• They slow down and need less space.

Why does the plastic bottle get crushed when cooled?

• The air inside expands and pushes out.

• The air inside contracts and external pressure crushes it.

• The bottle material weakens.

• The air inside becomes heavier.

What is the main reason the steel drum gets crushed?

• The drum is heated too much.

• The drum is filled with too much water.

• The air inside the drum is at a much lower pressure than outside.

• The steel drum is not strong enough.

How does the volume of the steel drum affect the cooling process?

• It heats up instead of cooling.

• The volume has no effect on cooling.

• It takes longer to cool down due to its larger volume.

• It cools down faster than a smaller bottle.