Ozone Layer and CFCs Impact

What is the primary function of the ozone layer in Earth's stratosphere?

• To produce oxygen for the atmosphere

• To absorb most of the sun's UV radiation

• To trap heat and warm the Earth

• To reflect sunlight back into space

Who were the scientists that discovered the ozone layer in 1913?

• Isaac Newton and Galileo Galilei

• Charles Fabry and Henri Buisson

• 
  Marie Curie and Pierre Curie

• Albert Einstein and Niels Bohr

What are chlorofluorocarbons (CFCs) commonly used for?

• To generate electricity

• As a food preservative

• In air conditioners and aerosol spray cans

• As a fuel for cars

How do CFCs affect the ozone layer?

• They increase the ozone concentration

• They release chlorine that depletes ozone

• They have no effect on the ozone layer

• They create more ozone molecules

What is the greenhouse effect?

• The reflection of sunlight by clouds

• The trapping of heat by gases in the atmosphere

• The cooling of Earth's surface by wind

• The absorption of UV radiation by the ozone layer

Which of the following is not a naturally occurring greenhouse gas?

• Methane

• Carbon dioxide

• Water vapor

• Hydrofluorocarbons

What is the effect of increasing greenhouse gases on Earth's temperature?

• 
  It increases the temperature

• It stabilizes the temperature

• It has no effect on temperature

• It causes the temperature to decrease

What has been a significant change in the last 100 years regarding greenhouse gases?

• A decrease in carbon dioxide levels

• A detrimental increase in carbon dioxide concentration

• 
  No change in greenhouse gas levels

• A decrease in methane levels

Which of the following is a suggested way to mitigate the effects of greenhouse gases?

• Increase fossil fuel consumption

• Use energy-efficient products

• Deforestation

• 
  Increase industrial emissions

What is one of the negative effects of an abnormal increase in greenhouse gases?

• Melting polar ice caps

• Global cooling

• Increased biodiversity

• Decreased sea levels