What Is The Hole In The Ozone - Part 2

The video explains the thinning of the ozone layer, primarily caused by CFCs, which release chlorine atoms that disrupt the ozone-oxygen cycle. The Montreal Protocol was established to ban CFCs, replacing them with HFCS, which are less harmful. The ozone layer is expected to recover in 50 to 100 years. The video also clarifies that the ozone hole does not cause global warming and discusses ozone formation in the troposphere, contributing to smog.

What was the main cause of the ozone hole discovered over Antarctica in the 1980s?

• Volcanic eruptions

• Chlorofluorocarbons (CFCs)

• Increased solar activity

• Deforestation

How do CFCs contribute to the depletion of the ozone layer?

• They release chlorine atoms that destroy ozone molecules.

• They increase the concentration of greenhouse gases.

• They block sunlight from reaching the stratosphere.

• They absorb UV radiation, preventing ozone formation.

What international agreement was established to address the issue of ozone depletion?

• Kyoto Protocol

• Paris Agreement

• Montreal Protocol

• Geneva Convention

What is a common misconception about the ozone hole?

• It allows harmful UV radiation to reach the ground.

• It causes global warming by letting heat in.

• It is responsible for acid rain.

• It increases the Earth's albedo.

In which layer of the atmosphere is ozone also generated, contributing to photochemical smog?

• Stratosphere

• Thermosphere

• Troposphere

• Mesosphere