Understanding the Ozone Layer

Front

What is the ozone layer?

Back

The ozone layer is a region of Earth's stratosphere that contains a high concentration of ozone (O3) molecules, which absorb most of the sun's harmful ultraviolet (UV) radiation.

Front

What is the primary function of the ozone layer?

Back

The primary function of the ozone layer is to protect living organisms on Earth by absorbing the majority of the sun's harmful ultraviolet (UV) radiation.

Front

What are CFCs?

Back

Chlorofluorocarbons (CFCs) are man-made chemical compounds that contain carbon, chlorine, and fluorine, which are known to deplete the ozone layer.

Front

What international agreement was established to protect the ozone layer?

Back

The Montreal Protocol is an international treaty designed to phase out the production and consumption of ozone-depleting substances, including CFCs.

Front

How do CFCs affect the ozone layer?

Back

CFCs release chlorine atoms in the stratosphere, which react with ozone (O3) molecules, leading to the depletion of the ozone layer.

Front

What is the difference between the terms 'ozone layer' and 'ozone hole'?

Back

The 'ozone layer' refers to the region of the atmosphere with high ozone concentration, while 'ozone hole' refers to areas where the ozone layer is significantly thinner, particularly over Antarctica.

Front

What are the consequences of ozone layer depletion?

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Consequences include increased UV radiation reaching the Earth's surface, leading to higher rates of skin cancer, cataracts, and harm to ecosystems.

Front

What role does the sun play in ozone layer dynamics?

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The sun emits UV radiation that can break down ozone molecules, but the ozone layer also absorbs this radiation, preventing it from reaching the Earth's surface.

Front

What are some natural sources of ozone?

Back

Natural sources of ozone include photochemical reactions in the atmosphere, particularly in the presence of sunlight.

Front

What is the significance of the Montreal Protocol?

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The Montreal Protocol is significant because it has successfully led to the reduction of ozone-depleting substances and has contributed to the recovery of the ozone layer.