Hydrosphere structure.notebook
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January 17, 2013
Mar 53:30 PM
The Structure of the Hydrosphere
8th Grade Curriculum Adapted from NCDPI 2008
percentages
The Structure of the Hydrosphere
• Oceans: about 97% of water found here
• Fresh water: about 3.0% of water found here
Fresh water distribution:• Ice: 2.07%• Groundwater: 0.9%• Surface Fresh Water: 0.009%• Other (Atmosphere and soil): 0.0027%
Hydrosphere structure.notebook
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January 17, 2013
wetland
The Structure of the HydrosphereWater Distribution on the Earth. If all the Earth's water equaled 2000mL (a 2 liter drink) here's where we'd find it all:
Oceans: 1940mL Fresh Water trapped in ice: 41.2 mL Groundwater: 18mL Soil and Air: 0.055mLSurface Freshwater in lakes, streams, etc.: 0.2mL
Oceans and ice
Understanding Where Your Water Is Located: Oceans and IceOceans are the largest bodies of water on Earth and hold the most water, (salt water only)
Icebergs are a large piece of freshwater ice floating in open watersGlaciers are any large mass of ice that moves slowly over landPermanent snow areas also hold water as ice
Hydrosphere structure.notebook
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January 17, 2013
rivers streams lakes
Fresh Water Locations: Rivers, Streams, and Lakes
River: a large channel along which water is continually flowing down a slope; it is made of many streams that come together
Stream: a small channel along which water is continually flowing down a slope; it is made of small gulliesLake: a body of water of considerable size contained on a body of land
groundwater
Fresh Water Locations: Groundwater
Groundwater is the water found in cracks and pores in sand, gravel and rocks below the earth’s surface
An aquifer is a porous rock layer underground that is a reservoir for water
Hydrosphere structure.notebook
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January 17, 2013
watershed and riverbasin
Fresh Water Locations: Watersheds and River Basins
Watershed vs. River Basin
Both terms describe land that drains into a river, stream or lake
River Basin: the area that drains into a large riverWatershed: the area that drains into a smaller river or stream
watershed and riverbasin
Larger river basins are made up of many interconnected watershedsExample: YadkinPeedee River Basin has many small watersheds
The water in a watershed runs tothe lowest point a river, stream, lake, or ocean
Fresh Water Locations: Watersheds and River Basins
Hydrosphere structure.notebook
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January 17, 2013
wetland
Other Surface Waters: Wetlands
Wetland an area where the water table is at, near or above the land surface long enough during the year to support adapted plant growthTypes of wetlands:Swamp: a wetland dominated by treesBogs: a wetland dominated by peat mossMarshes: a wetlanddominated by grasses
