Earth's Atmosphere

What is the outermost layer of the Earth's atmosphere called?

• mesosphere

• exosphere

• troposphere

• stratosphere

Which layer of the atmosphere is closest to the Earth's surface?

• troposphere

• stratosphere

• thermosphere

• mesosphere

What is the most abundant gas in the atmosphere?

• carbon dioxide

• ozone

• oxygen

• nitrogen

What makes wind?

• Warm air above land expands and rises, and heavier, cooler air rushes in to take its place, creating wind.

• Cold air pushes upward and mixes with the warm air

• we don't have wind

• Warm air sinks down and pushes the cold air down too

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which of the following in a name of a cloud that you would see with good weather on a sunny summer day?

• cirrus

• Cumulonimbus

• Stratus

• Nimbostratus

Clouds, layers of atmosphere, and gases are located in this sphere:

• hydrosphere

• biosphere

• atmosphere

• geosphere