Tropospheric Ozone and Environmental Impact

The video explains the differences between tropospheric and stratospheric ozone, highlighting their distinct roles and issues. Tropospheric ozone is a pollutant harmful to health, while stratospheric ozone protects against UV radiation. The video discusses the impact of chlorofluorocarbons (CFCs) on ozone depletion and the success of the Montreal Protocol in addressing this issue. The protocol has led to a recovery of the ozone layer, expected to be complete by 2040.

What is the primary difference between tropospheric and stratospheric ozone?

• Both are pollutants but in different layers.

• Tropospheric ozone is a pollutant, while stratospheric ozone protects from UV radiation.

• Tropospheric ozone is beneficial, while stratospheric ozone is harmful.

• They are the same and mix freely.

Which layer of the atmosphere is known for weather and air pollution?

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

Why do airplanes prefer to fly at the bottom of the stratosphere?

• To avoid air traffic

• To reduce fuel consumption

• To be closer to the sun

• To avoid turbulence

What are the main components that react to form tropospheric ozone?

• Water vapor and carbon monoxide

• Carbon dioxide and methane

• Volatile organic compounds and nitrogen oxides

• Oxygen and nitrogen

How long does tropospheric ozone typically last?

• Several months

• A few hours to a day

• Several years

• Indefinitely

What role does stratospheric ozone play in the environment?

• It contributes to global warming.

• It is a major air pollutant.

• It acts as a shield against ultraviolet radiation.

• It causes acid rain.

What happens to chlorofluorocarbons (CFCs) in the stratosphere?

• They cause acid rain.

• They form new ozone molecules.

• They break apart and release chlorine, which depletes ozone.

• They become inert and harmless.

What is the Montreal Protocol?

• A protocol to increase ozone production.

• A treaty to phase out the use of chlorofluorocarbons.

• An agreement to reduce carbon emissions.

• A plan to reduce global warming.

When is the ozone hole expected to be mostly gone?

• By 2050

• By 2025

• By 2030

• By 2040

What is a key takeaway from the Montreal Protocol's success?

• The ozone layer is beyond repair.

• CFCs are still widely used.

• Ozone depletion is irreversible.

• International cooperation can solve environmental issues.