What is ozone hole short answer?

The term ‘ozone hole’ refers to the depletion of the protective ozone layer in the upper atmosphere (stratosphere) over Earth’s polar regions. Polar stratospheric clouds create the conditions for drastic ozone destruction, providing a surface for chlorine to change into ozone-destroying form.

What is ozone hole Why is it harmful?

Consequences of ozone layer depletion. Since the ozone layer absorbs UVB ultraviolet light from the sun, ozone layer depletion increases surface UVB levels (all else equal), which could lead to damage, including an increase in skin cancer. This was the reason for the Montreal Protocol.

What is the ozone hole causing?

The ozone hole has developed because people have polluted the atmosphere with chemicals containing chlorine and bromine. The primary chemicals involved are chlorofluorocarbons (CFCs for short), halons, and carbon tetrachloride.

Where is ozone hole?

The Antarctic ozone hole is a thinning or depletion of ozone in the stratosphere over the Antarctic each spring. This damage occurs due to the presence of chlorine and bromine from ozone depleting substances in the stratosphere and the specific meteorological conditions over the Antarctic.

Is there still an ozone hole?

The ozone hole is still on a long-term path to recovery. In 2018, NASA unveiled the first direct proof the chemicals ban was leading to less ozone depletion. Researchers suggest the ozone hole over the South Pole could close around 2050. The story of this year’s hole isn’t yet complete.

Who first discovered ozone hole?

Jonathan Shanklin
In 1985 Jonathan Shanklin was a junior researcher at BAS when he discovered a hole in the invisible shield that protects us from solar radiation. We catch up with him to learn about his work and how it has made a difference. It’s 36 years since scientists first discovered the hole in the ozone layer.

Can we make ozone?

Ozone is naturally produced through certain types of chemical reactions. It is however less known that ozone can be artificially produced, so that it can be used for water treatment. Ozone generators can create ozone artificially by means of extremely high voltages or by means of UV-light.

How big is the ozone hole now?

24.8 million square kilometers
Aura’s Microwave Limb Sounder also estimates levels of ozone-destroying chlorine. This year, NASA satellite observations determined the ozone hole reached a maximum of 24.8 million square kilometers (9.6 million square miles)—roughly the size of North America—before beginning to shrink in mid-October.

How is ozone hole formed in Class 9?

(a) In the upper layers of the atmosphere, a layer of ozone is formed, which gets depleted due to chloro fluoro carbons and creates a hole called ozone hole. (b) Ozone hole is found above Antartica, over the North pole.

What is ozone hole class 9th?

Ozone holes can be termed as the depletion of the ozone layer which is present in the upper atmosphere i.e. stratosphere at the polar region of earth. The ozone hole doesn’t stop the radiation which is harmful to living things on earth and causes harmful effects such as health problems like skin cancer and eye damages.