What Is the Main Source of Energy for the Water Cycle?

nergy from theE sun powers the water cycle.
••• Sun image by KPICKS from Fotolia.com

The water cycle is a term for the movement of water between the Earth's surface, the sky and underground. Water evaporates due to heat from the sun; it condenses in clouds and forms rain; the rain forms streams, rivers and other reservoirs which then evaporate again.

The Sun

The sun is a single star which is at the center of our solar system. The sun provides heat and light energy for all of the planets in the solar system, including planet Earth.

Solar Energy

Solar energy takes the form of radiant heat and light emanating from the sun. In the water cycle, the heat and light of solar energy cause water to melt or evaporate, changing the water from a solid or liquid form to a vapor.

Other Energy Forms

Although solar energy is the main energy source for the water cycle, many other kinds of energy are involved as water cycles among solid, liquid and vapor states. Water falling from the sky as rain has kinetic energy (motion-related energy), for example.

Related Articles

How Does Water Enter the Earth's Atmosphere?
What Is the Sun's Role in Photosynthesis?
Where Does Nearly All of the Earth's Energy in the...
Why Is the Water Cycle Important to an Ecosystem?
How to Figure the Energy of One Mole of a Photon
How Does the Earth's Revolution Affect Its Seasons?
Living and Nonliving Things in the Ecosystem
How Does the Sun Affect the Food Web?
Role of Water in the Ecosystem
The Modern Theory of Light
What Is Responsible for Raindrops Falling to Earth?
At What Temperature and Pressure Can All Three Phases...
How Does the Earth Receive Heat From the Sun?
What Does the Condensation Process Require?
Natural Sources of Heat Energy
How to Convert Hertz to Milliseconds
Why Is the Water Cycle Important to Humans & Plants?
The Heat Rate of Power Generators
Why Are Deep Water Currents Important?

Dont Go!

We Have More Great Sciencing Articles!