Water A Precious Resource

Make a sketch showing groundwater and water table. Label it.

Choose the correct option. The total water

(i) in the lakes and rivers of the world remains constant.

(ii) under the ground remains constant.

(iii) in the seas and oceans of the world remains constant.

(iv) of the world remains constant.

Which one of the following is not responsible for water shortage?

(i) Rapid growth of industries

(ii) Increasing population

(iii) Heavy rainfall

(iv) Mismanagement of water resources

Fill in the blanks with the appropriate answers:

(a) People obtain groundwater through _______ and ________.

(b) Three forms of water are ________, ________ and ________.

(c) The water bearing layer of the earth is ________.

(d) The process of water seepage into the ground is called ________.

Explain the factors responsible for the depletion of water table.

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

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

Explain how groundwater is recharged.

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. (T/F)

(b) Water shortage is a problem faced only by people living in rural areas. (T/F)

(c) Water from rivers is the only source for irrigation in the fields. (T/F)

(d) Rain is the ultimate source of water. (T/F)