Usgs water cycle

Discovery Science: The Earth – Water

by

Earth Science: Water on the Earth The name of our planet may not be the most appropriate since only 29 percent of the Earth’s surface consists of land, while 71 percent is covered by water. Composed of two hydrogen atoms and one oxygen atom, water is one of the most important resources on Earth and … Read more

Pocket Genius Science: Matter and materials – The water cycle

by

Facts At Your Fingertips: Matter and materials – The water cycle Earth’s water is constantly changing state as it circulates between the sea, the land, and the sky. This process is known as the water cycle. Although water is always moving, the total amount of water in the world always stays exactly the same. Water … Read more