Ozone Layer and CFCs Impact

The video discusses the impact of human activities on the ozone layer, explaining its importance in blocking harmful UV radiation. It details how CFCs led to ozone depletion, prompting a global response through the Montreal Protocol. The story highlights the need for global cooperation and regulation to address environmental issues, using the ozone layer recovery as a successful example.

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

• To produce oxygen

• To reflect sunlight

• To absorb harmful UV radiation

• To keep Earth warm

How does ozone differ from the oxygen we breathe?

• Ozone is made of two oxygen atoms

• Ozone is made of three oxygen atoms

• Ozone is a single oxygen atom

• Ozone is not made of oxygen at all

What analogy is used to describe the ozone layer's function?

• A mirror

• Sunscreen

• A shield

• A blanket

What are CFCs primarily composed of?

• Nitrogen, oxygen, and carbon

• Chlorine, fluorine, and carbon

• Sulfur, chlorine, and hydrogen

• Carbon, hydrogen, and oxygen

What was the environmental impact of CFCs?

• They depleted the ozone layer

• They increased greenhouse gases

• They caused global warming

• They caused acid rain

Which international agreement was signed to address the ozone depletion?

• Kyoto Protocol

• Geneva Convention

• Paris Agreement

• Montreal Protocol

What was used as an alternative to CFCs?

• Nitrous oxide

• Methane

• CO2

• HFCs

What has been the result of the global ban on CFCs?

• The ozone layer has continued to deplete

• The ozone layer has slowly repaired itself

• The ozone layer has remained unchanged

• The ozone layer has disappeared completely

What lesson does the recovery of the ozone layer teach us?

• Environmental issues are not a global concern

• Technological advancements alone can solve environmental problems

• Global cooperation is essential for environmental solutions

• Individual actions are enough to solve global issues

What is necessary to drive significant environmental change according to the video?

• Public awareness campaigns

• Individual lifestyle changes

• Government regulations and policies

• Technological innovations