Ozone

Definition

Ozone is an allotrope of oxygen consisting three oxygen atoms bonded together into an O3 molecule. It forms naturally in Earth's upper atmosphere where it protects life from harmful ultraviolet radiation from Sun.

Related terms

Ozone Layer: The layer in Earth's atmosphere which contains a high concentration of ozone (O3). It absorbs most of the Sun's ultraviolet radiation.

Oxygen Molecule (O2):

A molecule consisting of two oxygen atoms bonded together, it is essential for life on earth.

Allotropes: Different physical forms in which an element can exist. For example, graphite and diamond are allotropes of carbon.