EASY
7th CBSE
IMPORTANT
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Among the values 9.7% and 2.5%, what is the approximate percentage of the total fresh water on the Earth? 

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Important Questions on Water: A Precious Resource

EASY
7th CBSE
IMPORTANT

From the given activity, calculate approximate percentages of the total water on the Earth. What is the percentage of amount of water in the form of ice? ( 1%, 10%, 60%)

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EASY
7th CBSE
IMPORTANT

From the activity, calculate approximate percentages of the total water on the Earth. What is the percentage of amount of water in lakes, rivers and streams? (write only number, do not use percentage symbol.) 10%, 1.5%, 50%

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EASY
7th CBSE
IMPORTANT

From the activity described below, calculate these as approximate percentages of the total water on the Earth. Amount of usable groundwater 50%, 20%, 0.14%

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EASY
7th CBSE
IMPORTANT
Are icebergs made of saltwater or freshwater? Explain your answer.
EASY
7th CBSE
IMPORTANT
How does deforestation affect the water table?
EASY
7th CBSE
IMPORTANT
In a shallow pond that had dried up during the summer, some people dug a few deep holes and inserted hollow pipes that stood upright. Would this help to raise the water table in the rainy season? Why, or why not?
EASY
7th CBSE
IMPORTANT
Sehjal found that the well at her home had water although another well in the neighbourhood had gone dry. Both the wells were of the same depth. How is this possible?
EASY
7th CBSE
IMPORTANT
How is an aquifer formed?