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Earth's water
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Water covers most of the _____'s surface.
Earth
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Snow and _____ are frozen water.
ice
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When water becomes very cold it freezes. It becomes _____ water.
solid
gas
liquid
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_____ water is the most common state of Earth's water.
solid
gas
liquid
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Some of Earth's water is _____. You cannot see it.
invisible
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Water keeps _____ alive and helps them to keep growing.
plants
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_____ are made up of tiny drops of water.
Clouds
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Rain, hail and snow are different kinds of ______.
precipitation
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______ water makes people, plants and animals sick.
Polluted
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Water vapor is a _____.
liquid
gas
solid
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