The process by which water moves through the Earth and atmosphere.

Rainwater that runs down the side of a hill and back into a water source.

The process by which water is heated, turns to vapor, and moves into the atmosphere. (Water changing from liquid to water vapor or gas.)

Most of Earth’s water is in the _______.

The process by which water vapor cools and returns to liquid state.

The process by which condensed water falls back to Earth in the form of rain, snow, sleet, or hail.

What does water vapor do before it returns to the Earth as rain or snow?

The passage of water vapor from a plant to the atmosphere.

When liquid water is heated and changed into a gas, it is called _______.

_____% of the Earth's surface is water.