Necessity of Water


Water and Its Importance I - Concepts
Class - 6th CBSE Subjects
 
 
Concept Explanation
 

Necessity of Water

Water available for use-about three –fourth of the earth surface is covered with water that is why it is also called the water planet. About three-fourths of the earth’s surface is covered with water. Water is found in puddles, ponds, rivers, lakes and oceans. It is present under the ground and in glaciers in the form of ice. It is also present in air in the form of water vapour.

  • 1) 97.40% of the available water is in seas and oceans which cannot be directly used by us because of its high salt content. A lot of fresh water is frozen in glaciers and in the polar ice caps. Thus, only 0.01% of the water on the earth is available to us for consumption.
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    Sample Questions
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    Question : 1

    Water in our tap comes from  ________________

    Right Option : D
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    Question : 2

    Which of the following are correct :

    (a) Water dissolves all salts and nutrients present in the food consumed by us.

    (b) Groundwater is an important source of fresh water.

    (c) Water is essential for the growth and sustenance of both plant and animal lives.

    Right Option : D
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    Explanation
    Question : 3

    We take in water through food and drink, and lose it in the form of ______________________

    Right Option : D
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