1) Evaporate a) When water changes from liquid to gas (water vapor) b) When water changes from gas (water vapor) back to liquid 2) Condensation a) When water changes from gas (water vapor) back to liquid b) When water changes from liquid to gas (water vapor) 3) Precipitation a) When water changes from liquid to gas (water vapor) b) Rain, but it can also include snow, hail and other ways that water falls from the sky 4) Collection/Runoff  a) Rain, but it can also include snow, hail and other ways that water falls from the sky b) When water that falls from the sky moves across earth’s surface it is called runoff

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