An example of something dissolving would be ____________.

The constant movement of water between the Earth and its atmosphere is called ___________.

Currents in the Northern Hemisphere move __________.

H2O is the chemical makeup of a water molecule. What are the atoms that make up a water molecule?

A _____________ is a substance that dissolves other substances.

Water vapor is invisible until it ____________.

When water changes from a liquid to a gas that is called _____.

When water changes from a gas into a liquid it is called _____.

A form of water that falls from the atmosphere to the earth is called _____.

An area of land from which water drains into a water system is called a _____.

A _____ includes the body of water, the surrounding area of land, and its ecosystem.

Pollution can affect a watershed by harming plants and animals many miles away from where it began.

Pollution can affect a watershed by damaging the groundwater supply.

Pollution can affect a watershed by making the water supply dangerous to drink.

Pollution has no affect on watersheds at all.

Water that looks clean and clear is fine to drink.

Water that is clean and clear may still contain harmful pollutants.

____ is the water that can be seen on the surface of the earth.

_____ is the water within the earth.

When freshwater rises up from underground by itself, it is called a(n) _____.