chapter 11 key terms

Question 1

surface water

Answer 1

fresh water on the earth’s surface

Question 2

river system

Answer 2

a flowing network of water formed by streams and rivers when they move across land

Question 3

watershed

Answer 3

area of land drained by a river

Question 4

groundwater

Answer 4

water found in the spaces in sediment and rock formations

Question 5

aquifer

Answer 5

an underground formation that contains ground water

Question 6

porosity

Answer 6

the percentage of the total volume of a rock that has spaces/pores.

Question 7

permeability

Answer 7

the ability of a rock/soil to allow water to flow through

Question 8

recharge zone

Answer 8

an area of the earth’s surface from which water goes down into an aquifer,

Question 9

potable

Answer 9

safe to drink

Question 10

pathogens

Answer 10

organisms that cause illness or disease

Question 11

dams

Answer 11

built to control a river’s flow

Question 12

reservoir

Answer 12

an artificial lake formed behind a dam

Question 13

desalination

Answer 13

the process of removing salt from water

Question 14

water pollution

Answer 14

the introduction of chemical, physical, or biological elements inter water that degrade the quality

Question 15

point source pollution

Answer 15

pollution discharged from a single source

Question 16

nonpoint source pollution

Answer 16

comes from many different sources that are often difficult to identify

Question 17

wastewater

Answer 17

water that contains waste from homes or industry

Question 18

artificial eutrophication

Answer 18

accelerated eutrophication from inorganic phosphorous and nitrogen entering the water

Question 19

thermal pollution

Answer 19

occurs when power plants and other industries discharge warm water into a lake or water

Question 20

biomagnification

Answer 20

buildup of pesticide in an animals tissues