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