The Water Cycle, Water Distribution, and Properties of Water

Front

Why does ice float?

Back

As water freezes, it expands and its density decreases.

Front

What two elements make up water?

Back

Hydrogen and oxygen.

Front

What is the water cycle?

Back

The movement of water on, above, or below the surface of the Earth.

Front

What is cohesion?

Back

The tendency of molecules of the same kind to stick to one another.

Front

What property causes water to bead up on the surface of a penny?

Back

High Surface Tension.

Front

What is the universal solvent?

Back

Water is known as the universal solvent because it can dissolve more substances than any other liquid.

Front

What is evaporation in the water cycle?

Back

The process by which water changes from a liquid to a gas.

Front

What is condensation in the water cycle?

Back

The process by which water vapor cools and changes back into liquid water.

Front

What is precipitation?

Back

Any form of water that falls from clouds to the Earth's surface, including rain, snow, sleet, and hail.

Front

What is the role of the sun in the water cycle?

Back

The sun provides energy for evaporation and drives the water cycle.