Reading Sheet: Air Pressure

Altitude is greater __________.

• at the bottom of the mountain
• at the top of the mountain
• at the center of the mountain

Air pressure is greater _______.

• at the top of the mountain
• at the bottom of the mountain
• at the center of the mountain

Density of air is greater ________.

• at the top of the mountain
• at the bottom of the mountain
• at the center of the mountain

A cubic meter of air has less mass at the top of the mountain.

• True
• False

Air pressure does not crush objects on earth

• because more air pushes down than up
• because gravity keeps air pressure away
• because air pressure pushes in all directions
• because the Earth has an opposing force of gravity

_______ and ________ are the units used by meteorologists to describe air pressure.

• inches of mercury and g/mL
• millibars and degrees celsius 
• degrees faharenheit and celsius
• inches of mercury and millibars

The amount of mass in a unit volume of a substance

• mass
• pressure
• volume
• density

An instrument that does not use a liquid to measure air pressure is _______.

• aneroid barometer
• mercury barometer
• thermometer
• ceilometer

_______ = force/unit area

• force
• pressure
• density
• temperature

Why is it hard to breath at high altitudes?

• There is too much oxygen in this location.
• There is a higher density of air molecules.
• There is a low density of air molecules.
• The air pressure is greater than at low altitudes.