20 terms

Earth's Water

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97%
the percent of Earth's water that is salt water
3%
the percent of Earth's water that is fresh water (rivers, lakes, underground, ice-caps, and glaciers)
2%
the percent of Earth's water that is frozen (ice-caps and glaciers)
1%
the percent of Earth's water that is usable liquid form
70%
the percent of the Earth's surface that is covered with water
surface water
water that collects above the ground in rivers, lakes, streams, ponds, and wetlands
aquifer
a layer of rock underground that collects and stores water
groundwater
water located below Earth's surface that collects in aquifers
runoff
water from rain and melted snow that flows over the land and collects in bodies of water
glacier
is a huge sheet of ice that moves slowly on land
watershed
is an area of land that drains into rivers or lake-sometimes called drainage basins or river basins
irrigation
is the use of artificial methods to supply water to plants-mostly food crops and lawns (sprinkler systems)
salinity
total amount of dissolved salts in water (saltiness of water)
-1 kilogram of ocean water contains about 35 grams of salts
-35 parts per thousand
Pacific Ocean
borders eastern Asia, northeastern Australia, Antarctic, & western North & South America; largest & deepest ocean
Atlantic Ocean
borders western Europe, western Africa, Antarctica, & eastern North & South America; 1/2 the size of the Pacific (2nd largest ocean)
Indian Ocean
the third largest ocean between Africa and Australia
Artic Ocean
located in the Northern Hemisphere and mostly in the Arctic north polar region, is the smallest and shallowest of the world's five major oceanic divisions.
Southern Ocean
extends from the coast of Antarctica to 60 degrees south latitude (4th largest ocean)
Hydrosphere
All the water on or surrounding the surface of the Earth (oceans, lakes, rivers, water in the atmosphere)
Hydrology
The branch of geology that studies water on the earth and in the atmosphere: its distribution and uses and conservation

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