Tag: causes of resource depletion
Questions Related to causes of resource depletion
What happen when the destruction of the ozone layer increases?
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The amount of harmful ultraviolet radiation
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The amount of needful ultraviolet radiation
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The amount of ultra radiations
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None of these
When the destruction of the ozone layer increases, the amount of harmful ultraviolet radiation increases.
Note:
Ozone layer acts as natural sun block and shields us from the UV radiations of the sun which are dangerous to living organisms.
The ozone molecules absorb ultraviolet rays between 310 to 200 nm wavelength.
Ozone absorbs UV radiation to give back oxygen. Thus, the ozone layer acts as a screen and prevents the harmful radiations from reaching the surface of earth.
Ozone is present as a chief constituent in which region of the atmosphere?
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Troposphere
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Stratosphere
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Mesosphere
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Thermosphere
Identify the harmful radiations emitted by the sun.
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Ultra violet
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Infra red
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Visible
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Radio waves
The ultraviolet radiations are the harmful rays which are present in the sun rays. The radiations are emitted from the sun and are harmful to living organisms. The ozone layer prevents the entry of these radiations into the Earth's atmosphere. The depletion of the ozone layer allows the radiations to cause harm to the plants and animals on the Earth.
The reduction in the amount of chlorofluorocarbons (CFCs) released into the air has had the greatest positive effect upon
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Water pollution
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Noise pollution
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Acid rain
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The ozone layer
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Endangered species
The presence of CFCs in the atmosphere results in the depletion of the ozone layer. They are used as coolants in refrigerators, coolers, etc. The CFCs causes the breaking of the ozone molecule which forms the oxygen radical and O$ _2$. The depletion of the ozone layer results in the penetration of the harmful UV radiations from the sun into the Earth's atmosphere. The reduction in the use of the CFC molecules will prevent the ozone thinning and have the positive effect on the ozone layer.
The stratospheric ozone depletion leads to
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Global warming
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Increase in the incidence of skin cancers
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Forest fires
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All of the above
In coming years, skin related disorders will be more common due to:
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Pollutants in air
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Use of detergents
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Water pollution
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Depletion of ozone layer
Thinning of ozone layer increases the amount of ultraviolet radiations reaching the earth surface. The increased UV-B radiation increases incidence of cataract, skin cancers herpes, dimming of eyesight, photo burning, snow blindness and deficient functioning of immune system.
Of the following, which is a greenhouse gas?
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Nitrogen dioxide
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Sulphur dioxide
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Carbon dioxide
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Carbon monoxide
Freon gas causing stratosphere $O _3$ depletion is mainly released from
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Refrigerators
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Automobiles
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Thermal power plants
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Steel industry
Maximum ozone depletion is caused by
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$CO _2$
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CFC
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$SO _2$
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$CH _4$
Excessive exposure of humans to UV-rays results in
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damage to immune system
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damage to lungs
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skin cancer
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peptic ulcers