EM- Water and its management, page no 101
Fresh water is often very visible on the earth's surface as lakes, rivers, and swamps. This is called surface water. Rivers, and sometimes lakes, are major sources for human use. There is a lot more water in the ground, known as ground water. Vast quantities of water are stored in the spaces of porous rock.
Places where water is most found:
Water from rivers:
Water first enters rivers through precipitation, whether from the runoff of water down a slope, the melting of glaciers or snow, or seepage from aquifers beneath the surface of the Earth. Rivers flow and merge in confluences to form drainage basins, areas where all water eventually flows to a common outlet.
Water from ground:
Groundwater is the water found underground in the cracks and spaces in soil, sand and rock. It is stored in and moves slowly through geologic formations of soil, sand and rocks called aquifers.
Water from the sea:
Seawater is a complex mixture of 96.5 percent water, 2.5 percent salts, and smaller amounts of other substances, including dissolved inorganic and organic materials, particulates, and a few atmospheric gases.
THE END
How does precipitation contribute to fresh water sources?
What role do glaciers and ice caps play in the fresh water supply?
How does groundwater contribute to the fresh water supply?
What are the main challenges in accessing fresh water from underground sources?
How do lakes and rivers serve as sources of fresh water?
What are the environmental impacts of overusing fresh water sources?