What is the ozone Layer?

1 Answer
Apr 7, 2016

Lower layer of the stratosphere that contains a high concentration of ozone.

Explanation:

In the lower layers of the stratosphere the amount of ozone in the air goes from less than 1 ppm to around 10 ppm. The cause of this is UV light from the sun striking regular oxygen molecules and causing them to split into 2 oxygen atoms. Each of these atoms attaches to a regular oxygen molecule and forms an ozone molecule.

Ozone is not transparent to UV (primarily UV-B) light, as such it blocks it. This is important because UV light is harmful to life.