An unconfined aquifer is a source of underground water that seeps through a permeable layer of dirt or sand directly to the ground surface above. Since the pressure of such aquifers is equal to or less than atmospheric p... More » Geography Bodies of Water

The main characteristic of an aquifer is its permeability. Permeability is the ability of a liquid and a gas to pass through the surface. It is very important to determine the aquifer's permeability in order to predict t... More » Science Earth Science Geology

In the aquatic biome, the light-penetrated layer is warm, the thermocline experiences rapid temperature change and the deep water is uniformly cold. The rapid temperature change in the thermocline is because it serves as... More »

Any body of salt water or brackish water that is a shallow separation from the rest of the sea is considered a lagoon, and they form when sand banks or reefs build up along shallow waters near the coast or when coral ree... More »

By capturing and storing water, then releasing it as needed, dams enable the production of hydroelectric power, provide a controllable water source for homes, businesses and irrigation, create recreation areas and help c... More »

A green wave measures thousands of miles across the ocean and is responsible for drawing nutrient-rich water from the ocean depths to the surface, according to Nature. Once the nutrients are near the surface, plankton th... More »

Approximately 71 percent of the Earth's surface is water. The oceans hold 96.5 percent of that water, and there is also water in icecaps and glaciers. The air holds water vapor, and the human body carries water as well. More »