This ppt prepared by Student -Teachers from Thiagarajar College of preceptors-Madurai for Demo class.

1. TEACHING
COMPETENC
Y LEVEL-1
WATER
BY
R.BHARATHI
1122119BD021

2. WATER
 INTRODUCTON:
water is one of the basic substance
present in the earth.
it plays a vital role in the evolution and
survival of life.
it is impossible to imagine life on the
earth without water.

3. Where do w get water from
 We get from different water source in our
sorroundings.
 Rivers ,water tanks , hand pipes are the main
source of water.
 Example:
 Get water from the pipes in washrooms and
kitchens.

4. Where and how water is found on
the earth?
 Solid form of water-ice
 Liquid form of water-water
 Gaseous form of water-vapour

6. Availability of water
 Saline-97./.
 Fresh water-3./.
 Surface water-0.3./.
 Rever-2./.
 Ground water-30./.
 Other-0.9./.
 Lacks-87./.
 Swamps-11./.

8. Water cycle
 From the clouds water falls on the earth in the
form of rain or snow by this natural procss.
 Evaporation
 Condensation
 Precipitation.
 It is called hydrological cycle.

10. Composition of water
 Water is a transparent
 Tastless
 Odour less
 Nearly colour less
 Two hydrogen atom combined with one
oxygen atom to gives water molecule.

12. THANK YOU