Air Pressure

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

• Air Mass
• Air Pressure
• Air
• Heavy

What is the instrument called that measures air pressure?

• thermometer
• ruler
• yard stick
• barometer

How far above sea level is called what?

• temperature
• altitude
• greenhouse effect

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

• low
• stinky
• high
• thin

Which of these items is NOT a property of air?

• It takes up space.
• Gravity does not affect it.
• It can be condensed.
• It has weight.

Air is more and more thin as you go higher in altitude because there is ___________ at a high altitude.

• less gravity and less air pressure
• more gravity and more air pressure
• more snow and more gravity
• more water vapor and more air pressure

What does a barometer measure?

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

Cold air exerts _____________ pressure than warm air

• the same
• more
• less

An aneroid barometer is different from a mercury barometer in that it

• measures temperature
• uses alcohol instead of mercury
• does not contain a liquid
• provides readings that increase as air pressure increases

The __, or elevation of a mountaintop is its distance above sea level.

• greenhouse effect
• altitude
• convection
• weather