# How did the ozone layer form?

Sep 5, 2017

The process, in proper terms is called ozone depletion.

#### Explanation:

At high altitudes, UV (ultra-violet light) would strike a chlorofluorocarbon (CFC) molecule, freeing a chlorine radical (Cl).

This chlorine radical would collide with an ozone (${O}_{3}$) molecule, "robbing" it of an oxygen atom, and also forms oxygen gas (${O}_{2}$).

When another oxygen radical strikes the formed molecule, which is a $C l O$ molecule, it frees the chlorine radical to "attack" other ozone molecules.

That's how it works.

P.S. : For further reading, you might want to watch a video my classmates did at school:

It might be useful.......

Sep 9, 2017