1. IN SEARCH OF WATER
By:-
SHREYA. RANGARAJAN
10th D

2. WHAT IS WATER???
WATER is a solvent, accurately a universal solvent,
which forms most part of the Earth as well as the
body of the living organisms.
WATER covers 71% of the Earth's surface; the oceans
contain 96.5% of the Earth's water. This comprises of
the hydrosphere of the earth.

3. THE CHEMISTRY OF WATER…

4. THE LIFE OF WATER…
•The water from the water
bodies evaporate and rise
towards the atmosphere.
•The water vapors condense
in the atmosphere, resulting
in the formation of clouds.
•The clouds ,on
accumulation of large
amount of water droplets,
the water returns to the
earth in the form of rain.

5. RAIN, RAIN……

6. WATER SUPPORTS ECOLOGY AND
ECONOMY

7. TOUCH THE DROPS TO…..

8. WATER GRAPHS

9. WATER,WATER NOW WHERE???
Water on the Earth, is not present in such an amount that it will never cease in
quantity.
And it is, indeed the case . The water is now scarce and today we have to search for
techniques to restore water. This condition has arose due to the following reasons:-

10. DROP BY DROP MAKES AN OCEAN…
The scarcity of water has developed a need to find techniques to conserve water. This
is done by some of the enlisted ways:

11. RAINWATER HARVESTING
Rainwater harvesting is defined as a process of collecting and storing rainwater for
later productive use.

12. FROM RAINWATER TO DRINKING
WATER……
Water can be collected by the following means:-

13. COMPONENTS OF THE WATER
HARVESTING SYSTEM

14. COMPONENTS OF THE WATER
HARVESTING SYSTEM

15. COMPONENTS OF THE WATER
HARVESTING SYSTEM

16. DAMS
A dam is an artificial barrier usually constructed across a stream channel to impound
water. Timber, rock, concrete, earth, steel or a combination of these materials may be
used to build the dam.

17. TYPES OF DAMS

18. CONSTRUCTION…
Most hydroelectric power comes from the potential energy
of dammed water driving a water turbine and generator; to
boost the power generation capabilities of a dam, the water
may be run through a large pipe called a penstock before the
turbine. A variant on this simple model produces electricity
to match periods of high and low demand, by moving water
between reservoirs at different elevations. At times of low
electrical demand, excess generation capacity is used to
pump water into the higher reservoir. When there is higher
demand, water is released back into the lower reservoir
through a turbine.