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Motion
What causes the direction of the wind from the sea to the land during the day time?
During the day land gets heated faster than the water bodies that is the sea. The heated air above the aland rises creating a low pressure area. To fill in the low pressure area the cool air above the sea moves into the area of low pressure. The movement of awind from one area to the other creates wind. This movement of air from sea to land causes the wind to move in the direction from sea to land.
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You have seen weather reports on television and in newspapers. How do you think we are able to predict the weather?
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.
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