A Precious Resource
Q1. Fill in the blanks.
People obtain groundwater through tube
wells and handpumps.
Three forms of water are solid, liquid
The water bearing layer of the earth is aquifer.
The process of water seepage into the
ground is called infiltration.
The amount of water recommended by the
United Nations for drinking, washing, cooking and maintaining proper hygiene is
a minimum of 50 litres per person per day.
The freshwater stored in the ground is much
more than that present in the rivers and lakes of the world. True
Water shortage is a problem faced only by
people living in rural areas. False
Water from rivers is the only source for
irrigation in the fields. False
Rain is the ultimate source of water. True
Bawri was the traditional way of collecting
Q3. When is water day celebrated?
22 March is celebrated as the world water day.
Q4. What is ground water?
The water found below the water table is called groundwater.
Q5. What is infiltration?
process of seeping of water into the ground is called infiltration.
Q6. Why do we celebrate world water day?
We celebrate water day every year to attract the attention of everybody towards
the importance of conserving water.
Q7. What is aquifer?
At places the groundwater is stored between layers of hard rock below the water
table. This is known as an aquifer.
Q8. What are the main processes involved in the water cycle?
main processes involved in the water cycle are evaporation, transpiration,
condensation, precipitation, runoff, and percolation.
Q9. Why is the water cycle important?
water cycle is important because its process provides Earth with the natural,
continual water supply all living things need in order to survive.
Q10. What is the source of groundwater?
rainwater and water from other sources such as rivers and ponds seeps through
the soil and fills the empty spaces and cracks deep below the ground.
Q11. How is water supplied in town?
Most towns and cities have water supply system maintained by the civic bodies.
The water is drawn from nearby lakes, rivers, ponds or wells. The water is
supplied through a network of pipes.
Q12. What is rainwater harvesting?
of the water that we get as rainfall just flows away. This is a waste of
precious natural resource. The rainwater can be used to recharge the
groundwater. This is referred to as water harvesting or rainwater harvesting.
Q13. You have been asked to maintain a garden. How will you
minimise the use of water?
can use drip irrigation to minimise the use of water. Drip
irrigation is a technique of watering plants by making use of narrow tubings
which deliver water directly at the base of the plant.
Q14. There are ten tube wells in a lane of fifty houses. What
could be the long term impact on the water table?
water table does not get affected as long as we draw as much water as is replenished
by natural processes. However, water table may go down if the water is not
Q15. How can farmer use water economically?
A farmer using water in the field can also use water economically by using drip
irrigation technique. Drip irrigation is a technique of watering plants by
making use of narrow tubings which deliver water directly at the base of the