Chlorofluorocarbons and Ozone Layer Quiz

What is the main function of the ozone layer?

• To absorb UV rays

• To emit UV rays

• To absorb visible light

• To emit visible light

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Where does the ozone layer exist in the atmosphere?

• Mesosphere

• Stratosphere

• Troposphere

• Thermosphere

Which type of UV radiation is the most harmful?

• UVB

• UVA

• UVC

• UVX

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What are chlorofluorocarbons (CFCs) made up of?

• Iron, copper, and zinc

• Hydrogen, oxygen, and nitrogen

• Chlorine, fluorine, and carbon

• Sodium, potassium, and magnesium

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What happens when chlorine atoms from CFCs come in contact with ozone molecules?

• They combine to form molecular oxygen

• They absorb UV rays

• They destroy ozone molecules

• They create more ozone molecules

How long can CFCs stick around in the atmosphere?

• Days to weeks

• Months to years

• Decades to hundreds of years

• Millennia

What is the main harmful effect of losing ozone due to CFCs?

• Formation of extra limbs in animals

• Breakdown of DNA

• Formation of new species

• Increase in plant growth

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In which year did the United States decide to ban CFCs used in aerosols?

• 1960

• 1978

• 1990

• 2005

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Who published a paper outlining how CFCs broke down ozone molecules in the atmosphere?

• M. J. Molina and F. S. Rowland

• Marie Curie

• Albert Einstein

• Isaac Newton

What is the estimated number of ozone molecules that one atom of chlorine can destroy?

• 50,000

• 100,000

• 10,000

• 500,000

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