Stratospheric Ozone

Mr. Anderson explains the importance of stratospheric ozone, which protects life on Earth from harmful ultraviolet radiation. He discusses the formation and breakdown of ozone, the impact of industrial chemicals like CFCs on ozone depletion, and the role of the Montreal Protocol in mitigating this issue. The video emphasizes the difference between stratospheric (good) and tropospheric (bad) ozone, highlighting the protective nature of the ozone layer against UV radiation.

What is the primary function of stratospheric ozone?

• To increase global temperatures

• To protect against ultraviolet radiation

• To absorb carbon dioxide

• To create smog

What are CFCs and how do they affect the ozone layer?

• They are pollutants that cause acid rain

• They are natural gases that help form ozone

• They are chemicals that release chlorine, which destroys ozone

• They are greenhouse gases that trap heat

How is ozone formed in the stratosphere?

• By the condensation of water vapor

• When ultraviolet radiation splits oxygen molecules, which then form ozone

• Through the breakdown of carbon dioxide

• By the combination of nitrogen and oxygen

What role does ultraviolet radiation play in the ozone cycle?

• It has no effect on ozone

• It only breaks down ozone

• It only forms ozone

• It helps form and break down ozone

What was the purpose of the Montreal Protocol?

• To promote the use of aerosols

• To ban all industrial chemicals

• To reduce the use of CFCs and protect the ozone layer

• To increase the production of CFCs

What is the difference between stratospheric and tropospheric ozone?

• Tropospheric ozone is beneficial, while stratospheric ozone is harmful

• Both are equally harmful to the environment

• Stratospheric ozone protects against UV radiation, while tropospheric ozone contributes to pollution

• Stratospheric ozone is harmful, while tropospheric ozone is beneficial

How does the Montreal Protocol contribute to ozone recovery?

• By reducing CFC emissions, allowing the ozone layer to recover

• By banning the use of all chemicals

• By promoting the use of alternative energy sources

• By increasing the production of ozone