Earth Atmosphere and Climates Review

What are the three main components of Earth's atmosphere?

• Nitrogen, carbon dioxide, argon

• Gases, water vapor, and particulates

• Oxygen, helium, neon

• Ozone, methane, hydrogen

What percentage of the air we breathe is composed of oxygen?

• 78%

• 21%

• 4%

• 0.04%

Which layer of the atmosphere is responsible for the beautiful Aurora Borealis (northern lights)?

• Exosphere

• Thermosphere

• Mesosphere

• Stratosphere

What is the primary function of the ozone layer in the stratosphere?

• To absorb carbon dioxide

• To absorb harmful UV radiation from the sun

• To produce oxygen

• To create the Northern Lights

What causes the temperature to decrease with altitude in the mesosphere?

• Absorption of UV radiation

• Presence of ozone molecules

• Heating from Earth's surface

• Entry of meteors into the atmosphere

Which type of UV radiation is most effectively filtered out by the ozone layer?

• UV-A

• UV-B

• UV-C

• UV-D

Tags

NGSS.HS-PS4-3

What is the primary reason for variations in humidity in Earth's atmosphere?

• Seasonal changes

• Air temperature

• Elevation

• Distance from the equator

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which of the following is NOT a source of particulate matter in the atmosphere?

• Volcanic eruptions

• Forest fires

• Ozone layer

• Dust storms

Why is oxygen considered the most important component of Earth's atmosphere for animal life?

• It supports plant growth

• It prevents wildfires

• It is essential for metabolic functions

• It is a greenhouse gas

Tags

NGSS.MS-LS2-1

What is the main threat associated with increased levels of particulates in the atmosphere?

• Depletion of ozone layer

• Health risks due to lung exposure

• Global warming

• Decreased precipitation