Question

Mark ‘T’ if the statement is true and ‘F’ if it is false:

A.
The freshwater stored in the ground is much more than that present in the rivers and lakes of the world.

B.
Water shortage is a problem faced only by people living in rural areas.

C.
Water from rivers is the only source for irrigation in the fields.

D.
Rain is the ultimate source of water.

Solution

A. True
B. False
C. False
D. True

Question

Explain how groundwater is recharged.

Solution

Rain water and the water from water bodies on earth’s surface pass through the soil by the process of infiltration. The infiltrated water then gets accumulated in the aquifer deep under the ground. There are some layers of impermeable rocks which prevent the water in the aquifer from seeping down further.

In this way, the ground water is recharged.

Question

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There are ten tube wells in a lane of fifty houses. What could be the long term impact on the water table?

Solution

If the people of the fifty houses use the ten tube wells, then the water required by them is drawn from the ground. If these tube wells are used for long time, then the ground water would be reduced and the water table would go down.

Question

Wired Faculty App

You have been asked to maintain a garden. How will you minimise the use of water?

Solution

To maintain a garden, water is necessary. Therefore, to minimise the use of water, we can apply the drip irrigation method. In this method, water is supplied directly to the base of the plants using narrow pipes, thereby reducing the loss of water.

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Water: A Precious Resource

Explain how groundwater is recharged.

There are ten tube wells in a lane of fifty houses. What could be the long term impact on the water table?

You have been asked to maintain a garden. How will you minimise the use of water?

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