How do you form O3?

How do you form O3?

Ozone is a molecule made up of three oxygen atoms, often referenced as O3. Ozone is formed when heat and sunlight cause chemical reactions between oxides of nitrogen (NOX ) and Volatile Organic Compounds (VOC), which are also known as Hydrocarbons.

Why is an ozone hole bad?

People, plants, and animals living under the ozone hole are harmed by the solar radiation now reaching the Earth’s surface—where it causes health problems, from eye damage to skin cancer.

How big was the hole in the ozone layer?

24 million square kilometers

Is there really a hole in the ozone layer?

Scientist Joseph C. Farman and his colleagues discovered that atmospheric ozone over Antarctica had reduced by 40 percent. Certain human-made substances had reached the stratosphere and disrupted the ozone layer to the point of depletion, creating an extremely thin section commonly known as the ozone hole.

How old is the ozone layer?

600 million years

Which gas is most harmful for ozone layer?

The main substances include chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), halons, carbon tetrachloride, methyl chloroform and methyl bromide. The damage to the ozone layer caused by each of these substances is expressed as their ozone depletion potential (ODP).

Why is the ozone layer hole in Antarctica?

The severe depletion of the Antarctic ozone layer known as the “ozone hole” occurs because of the special atmospheric and chemical conditions that exist there and nowhere else on the globe. The very low winter temperatures in the Antarctic stratosphere cause polar stratospheric clouds (PSCs) to form.

Is there a hole in the ozone layer above Australia?

Firstly, the ozone layer in the mid-latitude (e.g. over Australia) is thinned, leading to more UV radiation reaching the earth. Secondly, the ozone layer over the Antarctic, and to a lesser extent the Arctic, is dramatically thinned in spring, leading to an ‘ozone hole’.

What country has the worst ozone layer?

Antarctica, where ozone depletion has been most severe due to very low temperatures is expected to recover much more slowly. It’s projected that Antarctic ozone concentrations will only begin to approach 1960 levels by the end of the century.