The change from a gas to a liquid.

The change from a liquid to a gas.

The mixture of gases that surrounds the Earth.

Water that falls to the Earth as rain, snow, and hail.

Water that is stored underground.

Water that cannot soak into the ground and instead flows across the Earth's surface.

A body of rock that stores groundwater.

Which is an example of a tw0-dimensional model.

Which is an example of a three_dimensional model?

A statement made by a scientist that tells what he or she predicts the outcome to be.

An untested conclusion based on observations.

the falling to Earth of any form of water (rain, snow, sleet, hail, or mist)

the forming of tiny droplets of water as water vapor cools

process in which the sun's heat turns liquid water into water vapor

water found beneath Earth's surface

water contained in places such as lakes, ponds, rivers, streams, and reservoirs

process in which water moves from the oceans to the air to the ground and finally back to the oceans

water that flows across the land and enters rivers and streams. It eventually flows into lakes and oceans.

the gas formed when water evaporates

the layer of air that surrounds the Earth

a mass of tiny droplets of water that condensed from the air