The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet’s surface. Most importantly, it absorbs the portion of UV light called UVB. UVB is a kind of ultraviolet light from the sun (and sun lamps) that has several harmful effects.
Where are chlorofluorocarbons found?
Chlorofluorocarbons (CFCs) are anthropogenic compounds that have been released into the atmosphere since the 1930s in various applications such as in air-conditioning, refrigeration, blowing agents in foams, insulations and packing materials, propellants in aerosol cans, and as solvents.
What is the ozone hole and where is it found?
What is the Ozone Hole? The ozone hole is not technically a “hole” where no ozone is present, but is actually a region of exceptionally depleted ozone in the stratosphere over the Antarctic that happens at the beginning of Southern Hemisphere spring (August–October).
Where is the harmful ozone layer found?
“Bad” ozone is found in the troposphere, the layer nearest the ground. Tropospheric ozone is a harmful pollutant which forms when sunlight alters various chemicals emitted by humans. “Good” ozone forms in the stratosphere, the next higher layer where some jet planes fly.
Where is the ozone layer found what is the importance of ozone layer?
The ozone layer is found near the stratosphere. The ozone layer has its own importance.It protects the earth from the harmful ultraviolet(UV)rays of the sun.
What is chlorofluorocarbon used for?
Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.
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What are chlorofluorocarbons how are they responsible?
CFCs are synthetic harmful chemicals which are mainly responsible for ozone layer depletion. CFCs release chlorine atoms which break ozone to oxygen. … CFCs are used as coolants in air-conditioners, refrigerators, aerosols sprays, fire extinguishers etc.
How did the ozone layer get a hole?
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.
Why there is a hole in ozone layer above Antarctica?
What is it? 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.
What is meant by the hole in the ozone layer?
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 the function of the ozone layer?
The ozone layer in the stratosphere absorbs a portion of the radiation from the sun, preventing it from reaching the planet’s surface. Most importantly, it absorbs the portion of UV light called UVB. UVB is a kind of ultraviolet light from the sun (and sun lamps) that has several harmful effects.
What is the function of the ozone layer to the first life forms on planet Earth?
The ozone layer acts as a shield for life on Earth. Ozone is good at trapping a type of radiation called ultraviolet radiation, or UV light, which can penetrate organisms’ protective layers, like skin, damaging DNA molecules in plants and animals.
How does ozone layer protect?
The stratospheric ozone layer is Earth’s “sunscreen” – protecting living things from too much ultraviolet radiation from the sun. The emission of ozone depleting substances has been damaging the ozone layer.
What is the importance of ozone layer and how is it being destroyed?
It has also been linked to damage to some materials, crops, and marine organisms. The ozone layer protects the Earth against most UVB coming from the sun. It is always important to protect oneself against UVB, even in the absence of ozone depletion, by wearing hats, sunglasses, and sunscreen.
What is the importance of the ozone layer found on the boundary of the troposphere and stratosphere?
The stratosphere extends from the top of the troposphere to about 50 km (31 miles) above the ground. The infamous ozone layer is found within the stratosphere. Ozone molecules in this layer absorb high-energy ultraviolet (UV) light from the Sun, converting the UV energy into heat.
How does CFC destroy the ozone layer?
Once in the atmosphere, CFCs drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing chlorine atoms, which are able to destroy ozone molecules.
Which element is most responsible for depleting the ozone layer?
Chlorofluorocarbons (CFCs) and other halogenated ozone-depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).
What is the main source of chlorofluorocarbons?
The most common source of CFCs are refrigerants, but fire suppression systems for aircraft and aerosols also emit CFCs into the atmosphere.
What are chlorofluorocarbon how are they responsible for causing ozone hole in the atmosphere What will be the consequences of ozone hole?
Due to the release of chlorine atoms on exposure to ultraviolet radiation they are toxic to the ozone layer in the earth’s atmosphere. Chlorofluorocarbons are causing ozone hole as the chlorine released reacts with ozone and forms oxygen and creates a hole in the layer.
What effects can stratospheric ozone depletion have on 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.
Why are chlorofluorocarbons and Bromofluorocarbons called greenhouse gases?
Chlorofluorocarbons and bromofluorocarbons react with ozone layer and and makes compound which deplete the ozone layer as we know that ozone layer protect earth from harmful uv radiation and maintain temperature balance so it’s depletion cause green house effect . thus CFC are major green house agents.
Where is the biggest ozone hole?
This year’s Antarctic ozone hole is already among the 25% largest in recorded history and is still growing. The 2021 ozone hole over Antarctica is among the 25% largest in recorded history. (Image credit: Copernicus Atmosphere Monitoring Service, ECMWF.) A giant ozone hole has opened up over Antarctica this year.
Who discovered the ozone layer?
The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson.
Who destroyed the ozone layer?
Chlorofluorocarbons (CFCs) have been identified as the main cause of the destruction to the ozone layer, but there are also compounds containing bromine, other halogen compounds and also nitrogen oxides which cause damage.
What is the current status of the ozone hole 2020?
Scientists from the Copernicus Atmosphere Monitoring Service confirm that the 2021 Antarctic ozone hole has almost reached its end, following a season with a considerably large and prolonged ozone hole. Its closure will occur only a few days earlier than in 2020, which was the longest lived since 1979.
Did the ozone hole close?
Scientists from the Copernicus Atmosphere Monitoring Service (CAMS) are ending 2021 with an announcement worth celebrating: the 2021 Antarctic ozone hole has finally closed. This ozone hole was once larger than Antarctica and reached its maximum size on October 7th.
What is the main function of the ozone layer quizlet?
What is the purpose of the ozone layer? To stop excessive amounts of ultraviolet radiation reaching the Earth’s surface. It absorbs the UV rays to prevent them from reaching the ground.
What is the function of ozone layer Class 10?
Answer: The ozone layer protects us from the sun’s harmful UV radiation by absorbing them. The depletion of ozone causes the harmful UV rays to reach the earth, and this has resulted in a higher incidence of skin cancer in humans. UV rays may also cause genetic mutations in living organisms.
What is the function of ozone layer Brainly?
The ozone layer sits in the stratosphere between 15 km and 30 km above the earth. It absorbs most of the sun’s ultraviolet radiation (UV-B), limiting the amount of this radiation that reaches the surface of the Earth.
Which of the following best describes the importance of ozone in the stratosphere to life on Earth?
Which of the following best describes the importance of ozone in the stratosphere to life on Earth? Ozone absorbs most of the ultraviolet radiation from the Sun. … Which of the following best describes the effect of temperature on the chemical reactions that result in ozone layer depletion?
Does UV light destroy ozone?
UV light will create ozone from atmospheric oxygen at short wavelengths of less than 240 nanometers (nm). UV light will also destroy ozone and break ozone back down into atomic oxygen (O) and diatomic oxygen (O2) at wavelengths from about 200 nm to 315 nm.
What is ozone layer essay?
The essay on ozone layer depletion and protection gives us insight into changes in our environment. Ozone is super-charged oxygen in the lower level of the stratosphere. It makes a layer in the air, which goes about as a spread to the Earth against the bright radiation of the Sun.