Page 45 - SST Class 04

already a shortage of drinking water at many places in our country. We have to be
wise if we don’t want this problem to become graver. Everybody must conserve water
in every way that can be possible.

saline : salty
freshwater : the water which is not saline and can be used for drinking and cooking etc.
groundwater : the water that has seeped into ground.
irrigation : watering plants in farming.
Persian wheel (Rahat) : a series of buckets to draw water from a well.
water table : the level of groundwater.

dam : a wall built across a river to store water.
hydroelectricity : electricity generated at a dam.

Facts

• Water is found in small and big water bodies.
• Water is needed for domestic, agricultural and industrial purposes.
• Rainwater is the chief source of freshwater.

• The important sources of water for irrigation are wells, tube-wells, tanks, ponds, rivers, canals and
dams.

• Dams are multipurpose projects to generate electricity and provide water for irrigation.
• We have to use water wisely if we want it to be available for use in the future.

XERCISE

A. Tick (3) the right option :
1. The water in oceans and seas is ____________ .
(a) saline (b) freshwater (c) groundwater
2. Water table is ____________ .
(a) the water kept on a table

(b) a table made from water
(c) the level of groundwater
3. In a tube-well, water is drawn using ____________ .
(a) a series of buckets (b) electric motors (c) ropes
4. Canals are dug from ____________ .

(a) rivers (b) dams (c) both of these

India : Water Resources 45