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unit 5
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The space above the Earth where you see clouds and the sun.
sky
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Water that falls from the sky in drops.
rain
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The solid surface of the Earth that we walk on.
ground
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Water that is frozen and hard.
ice
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Very large areas of salt water, also called the sea.
oceans
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Located below the surface of the ground.
underground
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The way water moves around the Earth all the time.
water cycle
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Water that has a lot of salt in it (like ocean water).
salt water
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To change from a solid (like ice) to a liquid (water) because of heat.
melts
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White or gray masses of water vapor that float in the sky.
clouds
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White, soft ice that falls from the sky, usually when it is very cold.
snow
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Water that is not salty and is safe to drink.
fresh water
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Large areas of water with land all around them.
lakes
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Small, hard balls of ice that fall from the sky.
hail
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A nickname for Earth because it has so much water.
Blue Planet
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Long, natural streams of water that flow to the sea or a lake.
rivers
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