True or false: The water cycle shows that water moves through all of earth's spheres (hydrosphere, biosphere, atmosphere, and geosphere)
True
About 97% of our water is ___________________ water.
Salt and unusable
3% of the water on our planet is useable. Of that 2% of that is ______________.
Ice or glaciers
Of all the water on the planet, only _________ is fresh, useable water.
1%
_______________ is the process in which the earth’s surface (rock and soil) is worn away by water, ice, and wind
Erosion
______________________ is pollution that cannot be traced to a single source
Non-point source pollution
______________________ is pollution that can be traced to a single source
Point source
_________________ is water (rain, melted snow, hail, irrigation, car washing, etc) that flows over land before reaching streams or other surface water
Run-off
______________________ is particles of rock, mud, soil, and sand picked up by water from the land
Sediment
A ________________________ is the land that water flows across or under on its way to a body of water such as a stream, river, lake, or bay
Watershed
True or False: A single source of pollution, even if it is not near a body of water, can pollute an entire watershed?
True
Areas of higher elevations, such as _____, separate watersheds.
ridgelines or divides
The watershed systems in Virginia lead to _____ main bodies of water.
3
Wetlands form the _____ between dry land and bodies of water such as rivers, lakes, or bays.
transition zone
