Air Pressure and Isobars

What happens to air pressure as you move upward into the atmosphere?

• increases
• decreases
• stays the same

A device that is used to measure atmospheric pressure is a ___________.

• barometer
• thermometer
• kilometer
• micrometer

isobars are recorded in what unit?

• milimeters
• mililiters
• milibars
• miligrams

True or false: Density and pressure are two properties of air.

• True
• False

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

In what direction(s) does air exert pressure?

• everywhere
• no where
• there is no pressure
• downward

What happens to the amount of oxygen molecules as altitude increases?

• fewer molecules
• more molecules
• same amount of molecules
• nothing happens to the molecules

___________is the result of the weight of a column of air pushing on an area.

• air pressure
• density
• volume
• none of the above

What does the air consist of?

• molecules
• helium
• density
• weather