F2 : Air Pressure Vol 2

What will happen to a balloon as it goes up into the air?

• The size of the balloon increases
• The size of the balloon decreases
• The wall of the balloon becomes thicker
• Water droplets are formed inside the balloon

Cold air exerts _____________ pressure than warm air

• the same
• more
• less

The force of a column of air pressing down is called what?

• Air Mass
• Air Pressure
• Air
• Heavy

The air pressure is _____ when closest to the earth's surface.

• low
• stinky
• high
• thin

What does a barometer measure?

• air pressure
• water level
• wind direction
• wind speed

What does pressure measure?

• Strength
• Force exerted on a given area of surface

Density of air is greater at high altitudes.

• true
• false

What is the difference between particles in a gas and a solid?

• gas particles are closer together
• solid particles move faster than gas particles
• solid particles expand on heating
• gas particles have more kinetic energy than solid particles

What is caused by gas particles colliding with the walls of a container?
i) Kinetic energy
ii) Gas pressure
iii) Heat energy

• i only
• ii only
• i and ii only
• i, ii and iii

Which of the following statements explains why an empty bottle crushes when pressed?

• Air enter the bottle
• Heat from the hand expands the air in the bottle
• The air inside the bottle is forced out
• The air pressure inside the bottle is higher than the air pressure outside