Ch. 7 Lesson 2Ch. 7 Lesson 2Where is Where is

fresh water fresh water found?found?

Activity-Water, Water Everywhere

• http://www.srh.weather.gov/srh/jetstream/atmos/ll_water.htm

• Demonstrates amounts of fresh water, salt water, frozen water, etc. on Earth

Water Source Water volume(cubic miles)

Percent oftotal water

Oceans 317,000,000 97.24%Glaciers & icecaps 7,000,000 2.14%

Groundwater 2,000,000 0.61%Fresh-water lakes 30,000 0.009%

Inland seas 25,000 0.008%Soil moisture 16,000 0.005%Atmosphere 3,100 0.001%

Rivers 300 0.0001%Total water

volume 326,000,000 100%

fresh water• drinking water• less dissolved

salts than salt water

• starts as rain or snow

groundwater• rain or melted

snow that soaks into ground

• fills spaces between particles of rock & salt

YouTube Groundwater Song

aquifer• layer of rock & soil that

groundwater occupies

water table• Top level of groundwater in aquifer• Gets lower when people pump out

water faster than it is replaced

rivers• eventually flow ocean

watershed• area from

which water drains into a river

lakes• form when

water collects in a low spot

Video Clip-Lakes

reservoir• artificial lake that forms

behind a dam

• 7/10 of Earth’s fresh water • much of Greenland & Antarctica covered w/ huge ice sheets

ice

iceberg

• forms when large pieces of ice breaks off a glacier or ice sheet

Activity-Edible Aquifer