A. Give short answers.
1. What is the atmosphere?
2. What are the chief constituents of the atmosphere?
3. Name the five main layers of the atmosphere in order of distance from the ground.
4. In which part of the atmosphere does the ozonosphere lie?
5. What is insolation?
6. What is air pollution?
7. Name one natural and one man-made agent of air pollution.
8. Name two sources of CFCs.
9. Why is the depletion of atmospheric ozone bad for us?
Answers
Answer:
1. An atmosphere is a layer or a set of layers of gases surrounding a planet or other material body, that is held in place by the gravity of that body. An atmosphere is more likely to be retained if the gravity it is subject to is high and the temperature of the atmosphere is low.
2. While Earth's atmosphere has no definitive ending point, but instead thins out to near nothingness several hundred kilometers above the surface, virtually all of the atmosphere exists below100 km. The constituent elements are primarily nitrogen and oxygen, with a small amount of argon
3. These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth's surface is called the exosphere.
4. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9 to 22 mi) above Earth, although its thickness varies seasonally and geographically.
5. exposure to the sun's rays.
6. Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog.
7. Carbon dioxide is one of the most highly prevalent, comes from the combustion or burning of fossil fuels and other organic materials. Nitrogen oxide and dioxide, while both natural components of the Earth's atmosphere, occur in greater amounts due to human actions and are the cause of smog and acid rain.
8. The sources of CFS are
Refrigerators and Air Conditioners. The most common emitter of CFCs are refrigerants, particularly those used after the 1930s. ...
Aircraft Halon. Aviation regulations in some countries still require fire suppression systems outfitted with Halon, a coolant containing CFCs. ...
9. 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.
Explanation:
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A
1.The atmosphere of Earth is the layer of gases, commonly known as air, retained by Earth's gravity, surrounding the planet Earth and forming its planetary atmosphere.
2.While Earth's atmosphere has no definitive ending point, but instead thins out to near nothingness several hundred kilometers above the surface, virtually all of the atmosphere exists below100 km. The constituent elements are primarily nitrogen and oxygen, with a small amount of argon.
3.These layers are the troposphere, stratosphere, mesosphere and thermosphere. A further region at about 500 km above the Earth's surface is called the exosphere.
4.The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9 to 22 mi) above Earth, although its thickness varies seasonally and geographically.
5.Insolation is the amount of solar radiation that is received by a planet. Some of this energy is absorbed or reflected by the atmosphere, if there is one, and some reaches the surface.
6.Air pollution is the introduction of harmful substances into the environment.
7.Carbon dioxide is one of the most highly prevalent, comes from the combustion or burning of fossil fuels and other organic materials. Nitrogen oxide and dioxide, while both natural components of the Earth's atmosphere, occur in greater amounts due to human actions and are the cause of smog and acid rain.
8.Air conditioners and fridges
9.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.