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- 1. Multiple Choice
What is the primary function of the ozone layer?
To produce oxygen
To absorb carbon dioxide
To act as Earth's sunscreen
To generate ultraviolet radiation
- 2. Multiple Choice
What has caused the ozone layer to thin?
Global warming
Meteor showers
Solar flares
Pollution
- 3. Multiple Choice
What layer of Earth's atmosphere contains the ozone layer?
Mesosphere
Thermosphere
Stratosphere
Troposphere
- 4. Multiple Choice
What molecule is the ozone layer made of?
Carbon dioxide
Oxygen
Ozone
Nitrogen
- 5. Multiple Choice
What percentage of ultraviolet light does the ozone layer absorb?
About 50%
About 75%
About 98%
About 100%
- 6. Multiple Choice
What are the primary chemicals responsible for the breakdown of the ozone layer?
Carbon monoxide
Nitrous oxide
Chlorofluorocarbons
Sulfur dioxide
- 7. Multiple Choice
What elements does a CFC molecule contain?
Carbon, Chlorine, and Fluorine
Carbon, Hydrogen, and Oxygen
Hydrogen, Nitrogen, and Carbon
Oxygen, Sulfur, and Chlorine
- 8. Multiple Choice
What happens to CFCs when they are exposed to ultraviolet rays?
They solidify
They dissolve in the atmosphere
They break down into substances including chlorine
They combine with oxygen to form ozone
- 9. Multiple Choice
What is misleading about the term 'ozone holes'?
They are actually filled with oxygen
They are permanent and cannot be repaired
They only occur in the troposphere
They are more like thin patches than actual holes
- 10. Multiple Choice
Where has the ozone layer been particularly impacted by pollution?
Above the equator
Above the Antarctic
Above industrialized countries
Above the Arctic
- 11. Multiple Choice
What international agreement banned the production of ozone-depleting substances?
Stockholm Convention
Montreal Protocol
Paris Agreement
Kyoto Protocol
- 12. Multiple Choice
When do scientists estimate chlorine levels will return to their natural state?
In about 100 years
In about 50 years
In about 20 years
In about 75 years
- 13. Multiple Choice
(ESS2-1) Which sphere contains the ozone layer that protects living things from harmful ultraviolet radiation?
Hydrosphere
Atmosphere
Geosphere
Thermosphere
- 14. Multiple Choice
What is the primary cause of ozone depletion?
Excessive CO2 emissions
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances
Deforestation
Volcanic eruptions
- 15. Multiple Choice
What is the effect of increased UV radiation on aquatic ecosystems?
Increased water temperature
Decreased oxygen levels in water
Reduced phytoplankton populations
Increased salt content
- 16. Multiple Choice
What is the consequence of a thinner ozone layer for humans?
Improved vision at night
Increased risk of respiratory diseases
Increased risk of skin cancer
Enhanced immune system
- 17. Multiple Choice
Which layer of the atmosphere contains the ozone layer that absorbs and scatters the solar ultraviolet radiation?
Troposphere
Stratosphere
Mesosphere
Thermosphere
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