The Atmosphere

The Atmosphere

Multiple Choice

The air we breathe is mostly

• oxygen

• carbon dioxide

• nitrogen

• ozone

Multiple Choice

What is the atmosphere?

• water vapor

• a mixture of gases

• carbon dioxide

• oxygen

Multiple Choice

About how much of Earth's atmosphere is Oxygen?

• 21%

• 99%

• 78%

• 1%

Multiple Choice

The protective ozone layer is found in which layer of the atmosphere?

• stratosphere

• troposphere

• mesosphere

• exosphere

Multiple Choice

What property defines the distinctive layers of the atmosphere?

• mass

• density

• volume

• temperature

Multiple Choice

Which layer of the atmosphere is where most jet planes fly?

• mesosphere

• exosphere

• stratosphere

• troposphere

Multiple Choice

Which layer of Earth's atmosphere contains the jet stream?

• tropsphere

• mesosphere

• stratosphere

• exosphere

Multiple Choice

Which layer of the atmosphere is home to the aurora borealis and aurora australis?

• exosphere

• thermosphere

• atmosphere

• mesosphere

Multiple Choice

This layer of the atmosphere contains all earth's surface features.

• troposphere

• thermosphere

• exosphere

• mesosphere

Multiple Choice

Which layer of the atmosphere is the coldest?

• mesosphere

• exosphere

• stratosphere

• troposphere

Multiple Choice

This layer of the atmosphere contains all weather events.

• troposphere

• stratosphere

• mesosphere

• thermosphere

Multiple Choice

This layer contains the ionosphere, which is capable of conducting electricity.

• thermosphere

• mesosphere

• exosphere

• lithosphere

Multiple Choice

This layer of the atmosphere is considered the "middle sphere" of Earth's atmospheric layers.

• mesosphere

• exosphere

• thermosphere

• troposphere

Multiple Choice

This is the lowest layer of the atmosphere.

• exosphere

• thermosphere

• mesosphere

• troposphere

Multiple Choice

Shooting stars occur in this layer of Earth's atmosphere.

• troposphere

• exosphere

• thermosphere

• mesosphere

Multiple Choice

Which layer of the atmosphere makes radio communication possible?

• stratosphere

• troposphere

• thermosphere

• mesosphere

Multiple Choice

TRUE or FALSE: Most of the air in the atmosphere is located in the top two layers.

• TRUE

• FALSE

Multiple Choice

This layer of Earth's atmosphere is named after its high temperatures that occur there.

• thermosphere

• mesosphere

• exosphere

• stratosphere

Multiple Choice

What happens to air pressure as altitude increases?

• Earth's atmosphere has no air pressure

• The air pressure increases.

• The air pressure decreases.

• The air pressure remains the same.

Multiple Choice

Satellites orbit Earth in this layer of the atmosphere.

• stratosphere

• troposphere

• mesosphere

• exosphere