Unit Review-Earth's Atmosphere

What is the percentage composition of nitrogen in air?

• 78%

• 75%

• 86%

The composition of air consists of __________ key components.

• seven

• three

• ten

Tags

NGSS.MS-PS1-1

__________________ is the most important gas in the composition of air.

• Nitrogen

• Argon

• Oxygen

Layer of Earth's atmosphere where most of the water vapor and carbon dioxide is found

• thermosphere
• mesosphere
• stratosphere
• troposphere

Layer of Earth's atmosphere where weather occurs

• thermosphere
• mesosphere
• stratosphere
• troposphere

Tags

NGSS.MS-ESS2-5

Uppermost layer of Earth's atmosphere

• thermosphere
• mesosphere
• stratosphere
• troposphere

What is the hottest layer in the atmosphere?

• Ionosphere
• Stratosphere
• Thermosphere
• Mesosphere

What layer is the Ozone in?

• Ozone Layer
• Startosphere
• Troposphere
• It's not in one, it has its own

The _____ protects us from the harmful UV rays of the sun.

• Troposphere
• Ozone Layer
• Exosphere
• Stratosphere

The coldest layer.

• troposphere
• thermosphere
• exosphere
• mesosphere