1. the water cycle 2 click on picture for neat explanation of the water cycle
TRANSCRIPT
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The Water Cycle
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Click on picture for neat explanation of the Water Cycle
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The water cycle greatly affects weather and living things
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Vocabulary:
water cycle
The movement of water between the ground and the
atmosphere
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You might think that rain brings new water to Earth
But there is no new water on Earth
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The sun heats water on Earth and changes it from a liquid to
gas called water vapor
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The first step of the water cycle involves the sun
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Vocabulary:
water vapor
water in the form of a gas
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The water vapor goes into the air
This process is called evaporation
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Vocabulary:
evaporation
The process by which water changes from a liquid to a gas
and goes into the air
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It is evaporation that dries a puddle in the sun after the rain
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In the second step of the cycle, water vapor in the air changes
back to a liquid
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This happens when warm air holding water vapor gets cooler
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This process is called condensation
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Vocabulary:
condensation
The process by which water vapor in the air changes to
liquid water
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The tiny water drops in the air are packed closer and closer
together until they start to join
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Clouds are formed when thousands of drops are so close together that you cannot see
through them
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Video on “Cool Clouds” 7:15
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As clouds become cooler,
the drops join together to make bigger drops
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Finally, they become heavy enough to fall back to Earth as
rain or snow
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This falling rain or snow is the third step in the water cycle
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The word “cycle” usually means circle
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The water cycle is like a circle because it has no beginning or
endYep you got it another version of “The Water Cycle”
3:37
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There really is no new water on Earth
Click for Bill Nye the Science Guy “Water Cycle Jump”
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