Atmosphere Unit Review

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

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

What is altitude?

• how much something weighs
• the distance above sea level
• how big something is
• how far away something is

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

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

78% of earth's atmosphere is composed of ______________.

• methane
• oxygen
• argon
• nitrogen

The layers of air that surround Earth are called the-

• sky

• troposphere

• ozone

• atmosphere

Which is not a fact about the troposphere?

• Air pressure decreases as you move higher up in this layer

• Planes usually fly in this layer

• Most weather occurs in this layer

• Most of life exists in this layer

Which layer of the atmosphere contains ozone?

• stratosphere

• troposphere

• thermosphere

• mesosphere