water

WATER CLASS VI

USES OF WATER• DRINKING• BRUSHING• WASHING

UTENSILS,CLOTHES,VEHICLES• CLEANING PLATES, FLOOR• PRODUCING ELECTRICITY• AGRICULTURE, GARDENING• USED IN INDUSTRIES

NEARLY 2/3 OF EARTH IS COVERED WITH OCEAN/SEA WATER

WATER IN OCEANS AND SEAS IS SALTY [SALINE] AND UNFIT FOR DRINKING , INDUSTRIAL PURPOSE AND AGRICULTURE

SOURCES OF FRESH WATER• 1.RIVER

2.SPRING

3.POND

4.WELL

5.HAND PUMP

WATER IN TAPS COME FROM RIVER USUALLY

Cycling of water in nature- WATER CYCLE

• Basic processes in water cycle

• 1.EVAPORATION

• 2.CONDENSATION

• GAS [VAPOUR]

• LIQUID [WATER]

EVAPORATION• THE PROCESS OF

TURNING WATER TO WATER VAPOUR BY HEATING.

WATER EVAPORATES FROM WATER BODIES AND OTHER SOURCES DUE TO SUN’S HEAT

• THIS WATER VAPOUR JOINS THE ATMOSPHERE CONTINUOUSLY AS A SLOW PROCESS.

• WATER VAPOUR ALSO REACHES THE ATMOSPHERE BY TRANSPIRATION IN PLANTS.

FORMATION OF CLOUDS• THE WATER VAPOUR

MOVES UP AND UNDERGO COOLING , AND CONDENSATION TO FORM CLOUDS.

• MANY TINY DROPLETS OF WATER IN THE CLOUD COME TOGETHER TO FORM LARGER DROPS WHICH ARE HEAVIER AND FALL AS RAIN.

CONDENSATION• THE PROCESS BY

WHICH WATER- VAPOUR

TURNS TO WATER ON COOLING.

EXCESSIVE COOLING OF WATER VAPOUR RESULTS IN SNOW FALL / HAIL

THE WATER THAT FALLS ON LAND AS RAIN AND SNOW AGAIN UNDERGO CIRCULATION

RAIN WATER

SURFACE RUN OFFJOIN RIVERS LAKES

AND OCEAN

INFILTRATIONGO DEEP IN THE

SOIL

SOIL WATER USED BY PLANTS

GROUND WATERSOUCE FOR BOREWELL

WATER CYCLE

Ground water is an important source of water

DEPLETION OF WATER TABLE

Water table may go down

if the water is not sufficiantly replenished.

infiltration

Consumption of ground waterGround

water

REASONS OF DEPLETION OF WATER TABLE

1. DEFORESTATION

2 . SCANTY RAINFALL

3.EXCESSIVE CONSUMPTION BYINCREASING POPULATION

4. DECREASE IN THE SEEPAGE AREA

5. EXCESSIVE USE BY Agricultural activities

6. INCREASING INDUSTRIES

CONSERVATION OF WATERAVOID

WASTAGE

CONSERVATION OF WATER

REPAIR LEAKING TAP

CONSERVATION OF WATER

CONSERVATION OF WATERREUSE /RECYCLE IF POSSIBLE

WATER WISE HABITS DIRECT USED KITCHEN WATER TO YOUR GARDEN .

Drip irrigation for your garden

WATER WISE HABITS WASH VESSELS

USING COLLECTED WATER

INSTEAD OF WASHING DIRECTLY UNDER TAP.

WATER WISE HABITSMOP THE

FLOOR INSTEAD OF WASHING

WATER WISE HABITSTURN OFF

TAP WHILE BRUSHING

ROOF TOP RAINWATER HARVESTING RAINWATER IS

COLLECTED FROM THE ROOF OF BUILDINGS AND STORED IN TANKS AFTER FILTRATION.

Roof top rainwater harvesting

WATER PERCOLATION

SURFACE RUN OFF

PLANTING VEGETATION

Roof to rainwater harvesting

POND- A TRADITIONAL WAY OF COLLECTING WATER

INFILTRATION PITS IT SOAKS WATER & DIRECT IT TO

UNDER GROUND TO RECHARGE GROUND WATER

Pit filled with gravel

GRASSY PATCHES & OTHER VEGETATIONSHELPS IN INFILTRATION

DRIP IRRIGATION- saves water A TECHNIQUE OF WATERING

PLANTS BY USING NARROW TUBES WHICH SUPPLY WATER AT THE BASE OF PLANTS AS TINY DROPS.

DRIP IRRIGATION

IF IT RAINS HEAVILY---CAUSES FLOOD

NO RAIN FOR A LONG PERIOD –CAUSES DRAUGHT

Save every drop of water !

SAVE WATER ! SAVE LIFE !

SAVE WATER ! SAVE LIFE !

LABEL THE DIAGRAMSUN’S HEAT

CLOUDS

WATER BODY

EVAPORATION

CONDENSATION

RAIN FALL

6

FILL IN THE BLANKS1. the process of changing water to

water vapour is called ----------------.2. The process of recharging ground

water can be done by ---------------------.3.The source of water for bore well is

-----------4.Amethod of irrigation which saves

good amount of water is ------------------5. One reason for depletion of ground

water is is ----------------

MATCH THE FOLLOWING CIRCULATION OF

WATER IN NATURE INFILTRATION PITS WATER SAVING

METHOD OF IRRIGATION

A METHOD OF STORING RAINWATER FOR FUTURE USE

CAUSE OF WATER SHORTAGE

DEFORESTATION

WATER CYCLE ROOF TOP

RAINWATER HARVESTING

DRIP IRRIGATION

REPLENISH ground WATER

THANK YOU