1 lesson 4عرض تقديمي1 unit
Transcript of 1 lesson 4عرض تقديمي1 unit
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Unit 1 Lesson 4
21 / 10 / 1432
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Name of an OceanName of desert
Name of country
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Tiny drops of water mix with air and become clouds
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If the water in the clouds are too heavy
it falls to the earth again
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About 4/5 goes directly back into the sea
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In the land The water can
be used by living things
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Sources of drinking
Water
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2-Reservoirs
To provide drinking
water all year round
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Rain water drains under the earth
surface and collect in
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Water under the Sahara Desert in North Africa has lain there for
25,000 years
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Other under ground water doesn’t
lie in one place but moves slowly
downhill over hard rock
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The largest source of fresh water is in Antarctica
But it is unusable because1-it is remote2-it is in the form of ice
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In UK people drink a small percentage of the
water they use . Each person use about 180
liters of water per day
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Water is used in industry for variety of purpose
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Water is used in making
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cultivation irrigation
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- All year round – atomic – bore-hole – crop– cultivation – dam– dish – downhill– drain – drop– evaporate – mention– nearly – power station– precious – rainwater – remote – reservoir – salty – underneath – variety
:vocabNew
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Where does most rain fall?Where is the largest source of fresh water?What are the different uses of water?
Water