WATER A PRECIOUS RESOURCE :by MERLIN. S .W 1 WATER A PRECIOUS RESOURCE PRESENTED BY Mrs.MERLIN .S.W TGT (SCIENCE), K V .DHARWAD CLASS VII


THREE DIFFERENT STATES OF WATER :by MERLIN. S .W 2 THREE DIFFERENT STATES OF WATER 1. SOLID FORM OF WATER - ICE / SNOW PRESENT AS ICE CAPS AT THE POLES OF THE EARTH SNOW COVERED MOUNTAINS AND GLACIERS


2. LIQUID FORM - WATER :by MERLIN. S .W 3 2. LIQUID FORM - WATER PRESENT IN OCEANS LAKES RIVERS & UNDERGROUND


3.GASEOUS FORM - WATER VAPOUR :by MERLIN. S .W 4 3.GASEOUS FORM - WATER VAPOUR PRESENT IN AIR AROUND US


Cycling of water in nature :by MERLIN. S .W 5 Cycling of water in nature Basic processes in water cycle EVAPORATION - conversion of LIQUID TO GAS by heating CONDENSATION Conversion of GAS TO LIQUID by cooling GAS [VAPOUR] LIQUID [WATER] evaporation condensation heating cooling


WATER CYCLE :by MERLIN. S .W 6 WATER CYCLE


The process of seeping of water into the ground-INFILTRATION :by MERLIN. S .W 7 The process of seeping of water into the ground-INFILTRATION RAIN WATER SURFACE RUN OFF INFILTRATION SOIL WATER GROUND WATER


Slide 8:by MERLIN. S .W 8 THE UPPER LIMIT OFSATURATED ZONE OF GROUND WATER— WATER TABLE WATER TABLE


Slide 9:by MERLIN. S .W 9 UNSATURATED ZONE SATURATED ZONE AQUIFER WATER TABLE GROUND WATER THE GROUND WATER STORED BETWEEN THE LAYERES OF HARD ROCKS BELOW THE WATER TABLE --AQUIFER


Ground water is an important source of water :by MERLIN. S .W 10 Ground water is an important source of water


DEPLETION OF WATER TABLE :by MERLIN. S .W 11 DEPLETION OF WATER TABLE Water table may go down if the water is not sufficiantly replenished. infiltration Consumption of ground water Ground water


REASONS OF DEPLETION OF WATER TABLE :by MERLIN. S .W 12 REASONS OF DEPLETION OF WATER TABLE 1. DEFORESTATION


:by MERLIN. S .W 13 2 . SCANTY RAINFALL


3.EXCESSIVE CONSUMPTION BYINCREASING POPULATION :by MERLIN. S .W 14 3.EXCESSIVE CONSUMPTION BYINCREASING POPULATION


DECREASE IN THE SEEPAGE AREA :by MERLIN. S .W 15 DECREASE IN THE SEEPAGE AREA


5. EXCESSIVE USE BY Agricultural activities :by MERLIN. S .W 16 5. EXCESSIVE USE BY Agricultural activities


6. INCREASING INDUSTRIES :by MERLIN. S .W 17 6. INCREASING INDUSTRIES


CONSERVATION OF WATER :by MERLIN. S .W 18 CONSERVATION OF WATER AVOID WASTAGE


CONSERVATION OF WATER :by MERLIN. S .W 19 CONSERVATION OF WATER REPAIR LEAKING TAP


CONSERVATION OF WATER :by MERLIN. S .W 20 CONSERVATION OF WATER USE MINIMUM


CONSERVATION OF WATER :by MERLIN. S .W 21 CONSERVATION OF WATER REUSE /RECYCLE IF POSSIBLE


WATER WISE HABITS :by MERLIN. S .W 22 WATER WISE HABITS DIRECT USED KITCHEN WATER TO YOUR GARDEN .


Drip irrigation for your garden :by MERLIN. S .W 23 Drip irrigation for your garden


WATER WISE HABITS :by MERLIN. S .W 24 WATER WISE HABITS WASH VESSELS USING COLLECTED WATER INSTEAD OF WASHING DIRECTLY UNDER TAP.


WATER WISE HABITS :by MERLIN. S .W 25 WATER WISE HABITS MOP THE FLOOR INSTEAD OF WASHING


WATER WISE HABITS :by MERLIN. S .W 26 WATER WISE HABITS TURN OFF TAP WHILE BRUSHING


RAINWATER HARVESTING :by MERLIN. S .W 27 RAINWATER HARVESTING BASIC PRINCIPLE- REDUCE THE SPEED MAKE RUNNING WATER WALK ! MAKE WALKING WATER CRAWL !! MAKE CRAWLING WATER STAND !!! ALLOW THE STANDINGWATER TO PERCOLATE !!!! STOP!


Slide 28:by MERLIN. S .W 28


Slide 29:by MERLIN. S .W 29 WATER PERCOLATION SURFACE RUN OFF


PLANTING VEGETATION :by MERLIN. S .W 30 PLANTING VEGETATION


ROOF TOP RAINWATER HARVESTING :by MERLIN. S .W 31 ROOF TOP RAINWATER HARVESTING RAINWATER IS COLLECTED FROM THE ROOF OF BUILDINGS AND STORED IN TANKS AFTER FILTRATION.


Roof top rainwater harvesting :by MERLIN. S .W 32 Roof top rainwater harvesting


Roof to rainwater harvesting :by MERLIN. S .W 33 Roof to rainwater harvesting


BAWRI- A TRADITIONAL WAY OF COLLECTING WATER :by MERLIN. S .W 34 BAWRI- A TRADITIONAL WAY OF COLLECTING WATER


INFILTRATION PITS :by MERLIN. S .W 35 INFILTRATION PITS IT SOAKS WATER & DIRECT IT TO UNDER GROUND TO RECHARGE GROUND WATER Pit filled with gravel


GRASSY PATCHES & OTHER VEGETATIONS :by MERLIN. S .W 36 GRASSY PATCHES & OTHER VEGETATIONS HELPS IN INFILTRATION


DRIP IRRIGATION- saves water :by MERLIN. S .W 37 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 :by MERLIN. S .W 38 DRIP IRRIGATION


Slide 39:by MERLIN. S .W 39


Save every drop of water ! :by MERLIN. S .W 40 Save every drop of water !


SAVE WATER ! SAVE LIFE ! :by MERLIN. S .W 41 SAVE WATER ! SAVE LIFE !


SAVE WATER ! SAVE LIFE ! :by MERLIN. S .W 42 SAVE WATER ! SAVE LIFE !


LABEL THE DIAGRAM :by MERLIN. S .W 43 LABEL THE DIAGRAM SUN’S HEAT CLOUDS WATER BODY EVAPORATION CONDENSATION RAIN FALL 6


FILL IN THE BLANKS :by MERLIN. S .W 44 FILL IN THE BLANKS 1.The solid form of water is ---------------- 2. the process of changing water to water vapour is called ----------------. 3. The process of recharging ground water can be done by ---------------------. 4.The source of water for bore well is ----------- 5.Amethod of irrigation which saves good amount of water is ------------------ 6. One reason for depletion of ground water is is ---------------- ICE EVAPORATION rainwater harvesting ground water drip irrigation increase in population


MATCH THE FOLLOWING :by MERLIN. S .W 45 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


Slide 46:by MERLIN. S .W 46


THANK YOU :by MERLIN. S .W 47 THANK YOU