What activities that cause ozone depletion?
What activities that cause ozone depletion?
The main cause of ozone depletion and the ozone hole is manufactured chemicals, especially manufactured halocarbon refrigerants, solvents, propellants, and foam- blowing agents (chlorofluorocarbons (CFCs), HCFCs, halons).
What is the activity of ozone?
The ozone layer acts as our planet’s sunscreen, providing a filter to help protect all life forms from the Sun’s damaging ultraviolet (UV) rays. Any significant decrease in the amount of ozone in the stratosphere would result in an increase in the amount of ultraviolet rays reaching the Earth’s surface.
What is ozone depletion causes and effects?
Explanation: Ozone depletion is primarily caused by human activities. The main effect of ozone depletion is an increase in UV-B rays reaching the earth’s surface. Causes : chlorofluorocarbon (CFCs), halons, and other compounds deplete the ozone layer.
Which of the following depletes the ozone layer?
NO and freons are responsible for ozone layer depletion.
How do CFCs deplete ozone?
When chlorofluorocarbons (CFC) drift upwards towards the stratosphere, they come in contact with the Ozone layer. This leads to a chemical reaction where the CFC molecules are broken up by ultraviolet radiation, releasing chlorine atoms, which are able to destroy ozone molecules.
How the ozone layer is depleting?
Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by the ultraviolet radiations and release chlorine atoms.
How does ozone depletion occur?
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 are the effects of ozone layer depletion on the environment?
Effects on the environment Excessive UV -B inhibits the growth processes of almost all green plants. There is concern that ozone depletion may lead to a loss of plant species and reduce global food supply. Any change in the balance of plant species can have serious effects, since all life is interconnected.
What are examples of CFC?
Chlorofluorocarbons (CFC) are a class of organic compounds that are gaseous and contain carbon, fluorine, and chlorine. Some common uses of CFCs include refrigeration, spray cans, solvents, and air conditioners.
