Ch. 11 key terms Flashcards
surface water
fresh water on Earth’s land surface.
river system
streams and rivers move acrossthe land, they form a flowing network of water
watershed
The area of land that is drained by a river
groundwater
Water thatis found beneath Earth’s surface in the spaces in sediment and rockformations
aquifer
An underground formation that contains groundwater
porosity
the percentage of the total volume ofa rock that has spaces (pores).
permebeality
is, the more water it can hold. The ability of rock or soil to allow water to flow through
recharge zone
An area of Earth’s surface from which water percolates down into an aquifer
potable
safe to drink
pathogen
organisms that causeillness or disease.
dam
built across rivers to control the river’s flow.
reservoir
When a river isdammed, an artificial lake
desalination
the process of removing salt from saltwater
water pollution
the introduction of chemical, physical, orbiological agents into water that degrade water quality and harm the organismsthat depend on the water.
point-source pollution
pollutiondischarged from a single source.
