The Atmosphere

A mixture of gases that surrounds Earth is 

• altitude.
• the atmosphere.
• thermosphere.
• climate.

The Earth is made up of mostly

• nitrogen.
• oxygen.
• carbon dioxide.
• water vapor.

Air pressure is ____________ at the Earth's surface because more air is above you.

• weakest
• smallest
• strongest
• biggest

The __________ is the layer of the atmosphere where we live.

• Troposphere
• Mesosphere
• Stratosphere
• Thermosphere

The stratosphere contains the ________ ____________ .

• most gases

• ozone layer

• Northern Lights

• living things

The uppermost layer that blends in with outer space

• thermosphere.

• stratosphere.

• mesosphere.

• troposphere.

The contamination of the atmosphere by pollutants from humans or natural sources is 

• pollution.
• oxygen.
• air pressure.
• beneficial.

Tags

NGSS.MS-ESS3-4

Which color symbolizes the best level of air quality?

• yellow
• green
• orange
• maroon

Which layer protects us from meteors?

• troposphere

• mesosphere

• stratosphere

• thermosphere

As altitude increases, air pressure_________

• increases

• decreases

• stays the same

• doubles