Presentation Transcript
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