Short Answer Questions
1. What are the factors affecting the climate of any place?
2. Why is the atmosphere important for us?
3. What do you mean by precipitation? What is the main source of freshwater on the earth's
surface?
4. Why are planetary winds also called 'permanent winds'?
5. How are air and wind different from each other?
6. What is atmospheric pressure? How is it important for us?
7. What are the main causes of air pollution?
8. Define: (a) Breeze (b) Drizzle
Answers
Answer:
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Explanation:
1) Factors affecting climate
• distance from the sea.
• ocean currents.
• direction of prevailing winds.
• shape of the land (known as 'relief' or 'topography')
• distance from the equator.
• the El Niño phenomenon.
2) The atmosphere helps to protect living organisms from genetic damage by solar ultraviolet radiation, solar wind and cosmic rays. The current composition of the Earth's atmosphere is the product of billions of years of biochemical modification of the paleoatmosphere by living organisms.
3) Precipitation is any product of the condensation of atmosphericwater vapor that falls under gravity. The main forms of precipitation include drizzle, rain, sleet, snow, graupel and hail. ... The main source of water is rain which makes brooks then rivers.
4) Planetary winds - Planetary winds constantly blow in the same direction all around the world throughout the year from one latitude to the other. They are also called prevailing or permanent winds because they blow in the same direction constantly throughout the year.
5) The gaseous mixture in the atmosphere is called air. It includes oxygen, carbon dioxide and nitrogen. Wind is the horizontal motion of air caused by the pressure difference between two places.
6) Atmospheric pressure primarily hold us in shape. If this pressure disappeared suddenly we would start expanding due to the air inside our body and burst.
Also the blood in our arteries would surge to the surface of our skin as the blood pressure 120/80 mm of Hg is so regulated that it is lower then the atmospheric pressure 760 mm Hg.
We would die of suffocation as with zero pressure outside ,our lungs would contract just once, all the air would get evacuated and then there would be no air to inhale. I guess it would result in almost immediate death. It would be like throwing a person into a vacuum chamber. Clean and neat way of terminating everybody.
Of course there are numerous other reasons why atmospheric pressure is important i have high lighted the main importance.
7) Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires.
8) (a) Breeze: These are local winds which blow only during a particular period of the day or year in a small area. For example, land and sea breeze. (b) Drizzle: Light rainfall in the form of very tiny drop of water is called "Drizzle".
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