Ozone

Front

What is ozone?

Back

Ozone (O3) is a molecule composed of three oxygen atoms. It is found in the Earth's stratosphere and plays a crucial role in absorbing harmful ultraviolet (UV) radiation from the sun.

Front

What is the primary function of the ozone layer?

Back

The ozone layer protects living organisms on Earth by absorbing the majority of the sun's harmful ultraviolet (UV) radiation.

Front

What is the chemical equation for the breakdown of ozone?

Back

O3 + Cl + UV → O2 + ClO.

Front

What is the ozone hole?

Back

The ozone hole refers to the thinning of the ozone layer, particularly over Antarctica, which allows more UV radiation to reach the Earth's surface.

Front

When does the ozone hole reach its largest size?

Back

The ozone hole is largest during the early Antarctic spring.

Front

What are CFCs?

Back

Chlorofluorocarbons (CFCs) are man-made compounds that were commonly used in refrigeration, air conditioning, and aerosol propellants. They are known to deplete the ozone layer.

Front

What international agreement was established to protect the ozone layer?

Back

The Montreal Protocol, signed in 1987, aims to phase out the production and consumption of ozone-depleting substances, including CFCs.

Front

Why are CFCs still a threat to the ozone layer despite reduced production?

Back

CFCs persist in the atmosphere for decades and continue to destroy ozone even after their production has been curtailed.

Front

What is the relationship between UV radiation and ozone?

Back

Ozone absorbs UV radiation, preventing it from reaching the Earth's surface, which helps protect living organisms from harmful effects.

Front

What are the effects of increased UV radiation on human health?

Back

Increased UV radiation can lead to higher rates of skin cancer, cataracts, and other health issues.