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Unit 5 of the Second Edition of the National Geographic Foundations Curriculum
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Sky
The __________ is the space above you when you are outside; it has the sun, the moon and the stars.

To Fall
When something ____________, it goes down to the ground.

Rain
__________ is the water that falls from the clouds in the sky.

Snow
____________ is soft, frozen, white bits of water that fall from the sky when it’s cold outside.

Mountain
A __________________ is a very big hill. Sometimes the top is covered in snow.

Cloud
A ______________ is a white or gray object in the sky that has water and can make rain.

Ground
The _____________ is the surface of the Earth. You stand and walk on the ground.

Salt water
____ _____ is water that has salt; ocean water is salt water.

Fresh Water
_______ _______ is water that doesn't have salt. It's found in rivers, lakes, and other small bodies of water.

River
A ____________ is a long, narrow body of water that passes through land and ends in an ocean or lake.

Melt
When something __________ , it changes from a solid to a liquid because of heat.

Underground
When something is ___________ , it is below the surface of the Earth.

Lake
A ___________ is a large body of fresh water that's surrounded by land.

Clean
When someone or something is __________, they don't have any dirt or marks on them.

Dirty
When someone or something is ________, they are not clean.

Safe
When someone or something is ______, they are not in any danger or they are not dangerous.

Unsafe
When someone or something is __________, they're in danger and may be dangerous.
