Atmosphere Unit Review

For the Earth's atmosphere, section number two in the pie graph BEST represents the percentage of

• argon

• carbon dioxide

• oxygen

• nitrogen

This gas is found in the stratosphere where it helps protect us from UV radiation.

• ozone

• oxygen

• nitrogen

• carbon dioxide

The Earth's atmosphere is divided into five layers. In which layer does all life exist?

• exosphere

• mesosphere

• stratosphere

• troposphere

The circle graph represents the gases in our atmosphere. What gas is represented by the green section in the circle?

• ozone

• hydrogen

• nitrogen

• carbon monoxide

Which layer of Earth's atmosphere contains the ozone layer, an important layer that helps protect life on Earth from UV radiation

• exosphere

• mesosphere

• stratosphere

• troposphere

Almost 99% of Earth's atmosphere is made up of two gases. What are the two gases and the percents of each?

• 21% oxygen and 78% nitrogen

• 21% water vapor and 78% oxygen

• 21% nitrogen and 78% oxygen

• 21% carbon dioxide and 78% oxygen

The hottest layer.

• troposphere
• thermosphere
• exosphere
• mesosphere

What does the earth's atmosphere do?

• help to regulate the temperature on Earth
• Help UV rays to reach the Earth's surface
• Creates meteors in the sky
• Keep ocean waters cold

Tags

NGSS.MS-ESS2-6

As you go higher in the troposphere, the temperature _______________.

• decreases
• increases
• stays the same
• gets very hot

The higher you go, the air becomes _____ _____.

• More dense
• Less dense