Where is the ozone layer of the Earth?

• At ground level

• The stratosphere

• Within the crust

• In space

Which one of these is the molecular formula for ozone?

• O2
• O3
• O5
• O4

Tags

NGSS.MS-PS1-1

The ozone layer is important because it blocks out much of the sun's __ rays.

Ozone is created primarily by ​ (a)   . When high-energy ​ (b)   rays strike an

​ (c)   molecule (O2), they split the molecule into two single atoms. A freed atom then combines with another molecule to form a molecule of ozone (​ (d)   ).

• sunlight
• ultraviolet
• oxygen
• O3
• photosynthesis
• gamma
• carbon dioxide

Tags

NGSS.MS-PS1-5

Which of these is an ozone-depleting chemical?

• Nitrous oxide
• Methane
• Chlorofluorocarbons (CFCs)
• Carbon dioxide

A single atom of chlorine, acting as a catalyst, can destroy about ________ molecules of ozone.

• 2

• 100

• 1,000

• 100,000

Tags

NGSS.HS-PS1-4

How do scientists use data from satellites to calculate the ozone in the atmosphere?

• By counting the number of clouds in the sky
• By analyzing the migration patterns of birds
• By measuring the temperature of the ocean water
• By measuring the amount of ultraviolet radiation reaching the Earth's surface

Tags

NGSS.HS-PS4-3

What does this image show over Antarctica?

• Low UV radiation

• Thinning of the ozone layer

• Thinning ice sheets

• Ocean currents

Tags

NGSS.MS-ESS2-6

What atmospheric conditions contributed to the formation of the ozone hole over Antarctica?

• High CO2 concentrations

• High humidity

• Extremely cold temperatures

• Warm temperatures

What was the treaty that required countries to phase out the use of ozone-depleting chemicals?

• Montreal Protocol
• Geneva Convention

• Kyoto Protocol
• Paris Climate Agreement