Ozone layer depletion ppt. 1. ? The ozone layer refers to a region of Earth's stratosphere that absorbs most of the Sun's UV radiation. ? It contains high concentrations of ozone (O3) relative to other parts of the atmosphere. ? CFCs and other contributory substances are referred to as ozone- depleting substances (ODS).
In this manner, what is ozone layer depletion Slideshare?
Ozone layer depletion. The ozone layer protects the Earth from the Sun's harmful UV rays. Hole in the ozone layer has been caused by chemicals released by humans. CFC's are “too heavy” to reach the stratosphere.
Beside above, what is ozone layer 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.
Regarding this, what do you mean by ozone depletion?
Ozone layer depletion is simply the wearing out (reduction) of the amount of ozone in the stratosphere. Unlike pollution, which has many types and causes, Ozone depletion has been pinned down to one major human activity. Depletion begins when CFC's get into the stratosphere.
Where is ozone depletion greatest?
Most of the ozone that is destroyed is in the lower stratosphere, in contrast to the much smaller ozone depletion through homogeneous gas phase reactions, which occurs primarily in the upper stratosphere.
Related Question Answers
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). CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.How can we protect the ozone layer?
How can we protect the ozone layer? - Avoid the consumption of gases dangerous to the ozone layer, due to their content or manufacturing process.
- Minimize the use of cars.
- Do not use cleaning products that are harmful to the environment and to us.
- Buy local products.
How ozone layer is formed?
Ozone is produced naturally in the stratosphere when highly energetic solar radiation strikes molecules of oxygen, O2, and cause the two oxygen atoms to split apart in a process called photolysis. If a freed atom collides with another O2, it joins up, forming ozone O3.What is acid rain PPT?
ACID RAIN PPT. ? It is formed when sulphur dioxides and nitrogen oxides, as gases or fine particles in the atmosphere, combine with water vapour and precipitate as sulphuric acid or nitric acid in rain, snow, or fog.How is the ozone layer depleted?
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.How many countries signed the Montreal Protocol?
197 countries
What is greenhouse effect Slideshare?
1. Green house effect ? Meaning: Progressive warming up of the earth surface due to high concentration of manmade carbon dioxide in the atmosphere. ? Concentration of CO2 works like a glass panel of greenhouse allowing short wave incoming solar radiation to come in but preventing the long wave heat to re-radiated out.What is global warming Slideshare?
GLOBAL WARMING. ?Global warming is the increase in average temperature of the earths near surface air and oceans.?Most of the observed temperature increase is caused by increased concentration of greenhouse gases?Major gases water vapor – 36-70% carbon dioxide- 9 – 26 % methane - 4- 9 % ozone -3–7% GREEN HOUSE EFFECT.What is ozone layer in simple words?
Kids Definition of ozone layer : a layer of the earth's upper atmosphere that is characterized by high ozone content which blocks most of the sun's ultraviolet radiation from entering the lower atmosphere.Why is ozone important?
Ozone is a gas in the atmosphere that protects everything living on the Earth from harmful ultraviolet (UV) rays from the Sun. Without the layer of ozone in the atmosphere, it would be very difficult for anything to survive on the surface.When did ozone depletion start?
The discovery of the annual depletion of ozone above the Antarctic was first announced in a paper by Joe Farman, Brian Gardiner and Jonathan Shanklin which appeared in Nature in May 1985. Later, NASA scientists re-analyzed their satellite data and found that the whole of the Antarctic was affected.What is ozone depletion and its causes?
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). CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.What is called ozone depletion?
Alternative Title: ozone hole. Article Contents. Ozone depletion, gradual thinning of Earth's ozone layer in the upper atmosphere caused by the release of chemical compounds containing gaseous chlorine or bromine from industry and other human activities.Where is ozone layer?
The ozone layer is mainly found in the lower portion of the stratosphere from approximately 20 to 30 kilometres (12 to 19 mi) above Earth, though the thickness varies seasonally and geographically. The ozone layer protects the earth from the suns UV Rays.Who discovered the ozone layer?
Charles Fabry
How can we prevent depletion of ozone layer?
Buy air-conditioning and refrigeration equipment that do not use HCFCs as refrigerant. Buy aerosol products that do not use HCFCs or CFCs as propellants. Conduct regular inspection and maintenance of air-conditioning and refrigeration appliances to prevent and minimize refrigerant leakage.What is the function of ozone layer?
Ozone layer (stratospheric ozone) is a high concentration of ozone molecules about 30 to 50 km altitude (stratosphere). The main function of the ozone layer is to absorb the Sun's ultraviolet radiation, hence protecting the Earth from its harmful effects.What are the harmful effects of ozone layer depletion?
Effects of the ozone hole to the environment and health For humans, direct exposure to UV rays can lead to: Skin cancer such as melanoma, basal cells or squamous cell carcinomas. Premature aging and other skin damage. Eye damage such as cataract problems, photokeratitis or snow blindness.How does ozone depletion affect humans?
Depletion of the ozone layer has consequences on humans, animals, and plants. This typically results from higher UV levels reaching us on earth. Research confirms that high levels of UV Rays cause non-melanoma skin cancer. Additionally, it plays a major role in malignant melanoma development. 
