Air Pressure Review

The weight of a column of air pushing down on an area is

• Pressure

• Air Pressure

• Humidity

• Density

The instrument that measures air pressure is a

• Psychrometer

• Thermometer

• Barometer

• Anemometer

As altitude increases, what happens to the density of air?

• Increases

• Stays the same

• Decreases

• Decreases then increases

Select all that are true!

• Air has mass because it is composed of atoms and molecules.

• Because air has mass, it has density and pressure.

• The less molecules in a given volume of air, the greater its density.

• The greater the density of air, the less pressure it exerts.

Select all that are properties of air.

• Temperature

• Density

• Volume

• Weight

• Pressure

Air pressure likes to be ___________.

• greater inside

• unequal

• equal

• greater outside

Why are you not crushed by air pressure? Select all that are true

• Air pushes in all directions.

• Air only pushes down.

• Air only pushes up.

• Air pushing down is equal to the air pushing up and out from you.

What point has the greatest density?

• A

• B

What point has the least air pressure?

• A

• B

As altitude decreases, what happens to density and air pressure?

• Decreases

• Increases

• Stays the same

• Increases and decreases