Ozone (O3)

Definition

Ozone is a molecule made up of three oxygen atoms bonded together. It plays a crucial role in the Earth's atmosphere by absorbing harmful ultraviolet (UV) radiation from the Sun.

Related terms

Ultraviolet (UV) radiation:

Electromagnetic radiation from the Sun that has shorter wavelengths than visible light and can cause damage to living organisms.

Stratosphere:

The layer of Earth's atmosphere located above the troposphere where most of the ozone is found.

Ozone depletion: The gradual thinning of Earth's ozone layer due to human-made chemicals called chlorofluorocarbons (CFCs).