What is meant by ozone depletion?

What is meant by ozone depletion?

Ozone Depletion. When chlorine and bromine atoms come into contact with ozone in the stratosphere, they destroy ozone molecules. One chlorine atom can destroy over 100,000 ozone molecules before it is removed from the stratosphere. Ozone can be destroyed more quickly than it is naturally created.

What is ozone depletion and its effects?

Ozone layer depletion causes increased UV radiation levels at the Earth’s surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders. UV rays also affect plant growth, reducing agricultural productivity.

What causes ozone depletion?

Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below).

How can we prevent ozone depletion?

How can we protect the ozone layer?

  1. Avoid the consumption of gases dangerous to the ozone layer, due to their content or manufacturing process.
  2. Minimize the use of cars.
  3. Do not use cleaning products that are harmful to the environment and to us.
  4. Buy local products.

Which gas is found in Ozonosphere?

The ozone layer or ozone shield is a region of Earth’s stratosphere that absorbs most of the Sun’s ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.

When did ozone depletion start?

Beginning in the late 1970s, a large and rapid decrease in total ozone, often by more than 60 percent relative to the global average, has been observed in the springtime (September to November) over Antarctica. Farman and his colleagues first documented this phenomenon over their BAS station at Halley Bay, Antarctica.

How does ozone depletion affect the environment?

Ozone depletion is a major environmental problem because it increases the amount of ultraviolet (UV) radiation that reaches Earth’s surface, which increases the rate of skin cancer, eye cataracts, and genetic and immune system damage.

Which is most harmful for ozone depletion?

chlorofluorocarbons (CFCs)
Chemicals, especially produced halocarbon refrigerants, solvents, propellants, and foam-blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons) are the main cause of ozone depletion and the ozone hole.

How does ozone depletion affect climate change?

It absorbs solar ultraviolet radiation, which heats the stratosphere. It also absorbs infrared radiation emitted by the Earth’s surface, effectively trapping heat in the troposphere. Therefore, the climate impact of changes in ozone concentrations varies with the altitude at which these ozone changes occur.

What are the harmful effects of ozone depletion Class 10?

The following are the harmful effects of ozone depletion.

  • It causes UV rays to reach the earth and it causes harm to living organisms.
  • It can lead to skin cancer in humans.
  • It can lead to cataracts in humans.
  • It can lead to damage to our immune system by lowering the body’s resistance to diseases.

Who first discovered the ozone layer?

The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson.