Give reasons for the following:
1. The Earth does not experience extremes of temperature as in other planets.
2. The amount of water vapour in the atmosphere varies from place to place.
3. Solid particles play an important role in the atmosphere.
4. In the troposphere, the temperature decreases with height.
5. The stratosphere is crucial to life on Earth.
6. The ionosphere (thermosphere) is suited to long distance communication
7. As a jet plane flies high in the sky, it leaves a white trail behind.
8. In the troposphere, temperature decreases with height.
9. Dust particles play a significant role in the atmosphere.
10. The exosphere allows the gas molecules to easily escape into space.
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Answers
Answer:
1) The earth does not experience extremes of temperature as on other planets due to the presence of the atmosphere. Thus, the temperature decreases with height in this layer. The stratosphere is crucial to life on the earth because the ozone layer present in it absorbs the harmful ultraviolet radiation of the sun.
2)Water vapour enters the atmosphere primarily by the evaporation of water from the Earth's surface, both land and sea. The water-vapour content of theatmosphere varies from place to place and from time to time because the humidity capacity of air is determined by temperature.
3)Particles of dust, soil, fecal matter, metals, salt, smoke, ash and other solids make up a small percentage of the atmosphere. Particles are important because they provide starting points (or nuclei) for water vapor to condense on, which then forms raindrops.
4)In the troposphere, the temperature generally decreases with altitude. The reason is that the troposphere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection.
5)The stratosphere is crucial to life on Earth because it contains small amounts of ozone, a form of oxygen that prevents harmful UV rays from reaching Earth. The region within the stratosphere where this thin shell of ozone is found is called the ozone layer.
6) The ionosphere is the part of the atmosphere that is ionized by solar radiation. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. It has practical importance because, among other functions, it influences radio propagation to distant places on the Earth.
7) don't know
8)same question (4)
9)Particles of dust, soil, fecal matter, metals, salt, smoke, ash and other solids make up a small percentage of the atmosphere.Particles are important because they provide starting points (or nuclei) for water vapor to condense on, which then forms raindrops.
10) The exosphere allows the gas molecules to easily escape into space due to lack of gravity. Solid dust particles present in the atmosphere act as a nuclei for change of water vapour into raindrops around them.
Explanation:
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