20 terms

science chap. 4

STUDY
PLAY
goundwater
This is water that collects in spaces, cracks, rocks and soil underground.
irrigation
This is how fresh water is supplied to farms and fields.
water reclamation
This is the recycling of waste water so it can be used again.
aquifer
This is an underground layer of rock or soil where water moves easily.
conservation
This is the careful use of natural resources.
aqueduct
This is a system of channels, pipes, and tunnels that carry water a long distance.
desalination
This is the process by which salt is removed from salty water.
well
A hole dug into an underground area with water.
watershed
This is the region of land that drains into a river.
ocean
This is the body of water that covers most of the earth.
glaciers
This is where you can find fresh water frozen as ice.
Can people drink ocean water?
No, because people can't drink salt water.
Colorado River
This is where we get most of our water in California.
reservoir
This is a place where water is stored and held for people to use.
evaporation
This is when water disappears into the air.
condensation
This is when water comes together in the air and forms clouds.
independent variable
This is the part of an experiement that is changed.
controlled variable
This is the part of the experiment that is not changed.
dependent variable
This is the part of the experiment that is measured.
precipitation
This is what water is called when it falls from the sky.