The Natural Water Cycle (JPG)
The Natural Water Cycle
Earth's water is always in movement, and the natural water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Water is always changing states between liquid, vapor, and ice, with these processes happening in the blink of an eye and over millions of years.
This diagram is a small part of USGS's Water Science School, where anyone of any age can learn all about water.
The USGS Water Science School - The Water Cycle
Visit the U.S. Geological Survey's (USGS) Water Science School. We offer information on many aspects of water, along with pictures, data, maps, and an interactive center where you can give opinions and test your water knowledge.