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Motion
What can you say about:
(i) The appearance of areas of low and high pressure in coastal areas at night?
(ii) The direction in which air would flow at night in coastal areas?
(i) During night the land cools faster than the sea Since, sea water cools down slower than the land, the air remains warm and rises up, creating a region of low pressure above the sea. As the land cools faster the air above land also becomes coll and a region of high pressure is developed over land.
(ii) At night, the air flows from the land to the sea.
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We know that many human activities lead to increasing levels of pollution of the air, water-bodies and soil. Do you think that isolating these activities to specific and limited areas would help in reducing pollution?
Write a note on how forests influence the quality of our air, soil and water resources.
What are the two things which are essential for all forms of life on the earth?
What is biosphere?
What are the physical components?
What is biotic component?
Does there exist any relationship between the climate and biotic components? If yes, explain with example.
What percentage of oxygen and nitrogen is present in the air?
Name the pollutants by which industries pollute air.
How is balance of carbon dioxide and oxygen maintained in the environment?
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