Environmental unit 7

Question 1

Algae blooms are most often caused by _____.

Answer 1

eutrophication

Question 2

Which parameter greatly affects the toxicity level of other parameters?

Answer 2

pH

Question 3

a natural or artificial place to store water

Answer 3

reservoir

Question 4

a region that drains into a certain water body

Answer 4

watershed

Question 5

Approximately _____% of trash in the ocean originally came from land

Answer 5

80

Question 6

Leaking underground storage tanks that contain gasoline is an example of ______.

Answer 6

point-source pollution

Question 7

the process of introducing bacteria and other living organisms that eat oil, helping it break down faster

Answer 7

bioremedation

Question 8

the settling of materials at the bottom of a liquid

Answer 8

sedimentation

Question 9

A(n) _____ aquifer is most easily polluted.

Answer 9

unconfined

Question 10

the lack of clean water or available water resources to meet water usage demands in a region

Answer 10

water scarcity

Question 11

______ is the number-one way people use fresh water.

Answer 11

Agriculture

Question 12

Too much _____ can lead to a decrease in photosynthesis in aquatic life.

Answer 12

turbidity

Question 13

A(n) _____ aquifer is most easily recharged.

Answer 13

unconfined

Question 14

materials that can be broken down by living organisms

Answer 14

biodegradable

Question 15

eutrophication caused by human activities

Answer 15

cultural eutrophication

Question 16

the result of excess nutrients in an aquatic ecosystem, which causes excess plant and algae growth

Answer 16

eutrophication

Question 17

If trees in the _____ are removed, water temperatures can increase in streams.

Answer 17

riparian zone

Question 18

Groundwater is a _____ resource.

Answer 18

renewable

Question 19

Approximately ______% of oil spills come from human activities.

Answer 19

85%

Question 20

Fossil water is a _____ resource.

Answer 20

nonrenewable

Question 21

the settling of very small particles such as silt and clay

Answer 21

siltation

Question 22

aims to make all surface water from natural sources safe for swimming and fishing

Answer 22

Clean Water Act

Question 23

allows the EPA to control toxic waste and sewage dumping in U.S. waters

Answer 23

Marine Protection, Research, and Sanctuaries Act

Question 24

centers around protecting both surface water and groundwater from pollution

Answer 24

Safe Drinking Water Act

Question 25

supports state and local regions in cleaning polluted runoff

Answer 25

Water Quality Act

Question 26

Chemicals added to roads is an example of _____.

Answer 26

nonpoint-source pollution

Question 27

the measure of how well water can move through the pores in a substance

Answer 27

permeability

Question 28

a measure of how many holes are in a substance

Answer 28

porosity

Question 29

water added to aquifers through precipitation

Answer 29

recharge

Question 30

an aquifer in which the water infiltrates the ground directly above the aquifer

Answer 30

unconfined aquifer

Question 31

The usable fresh water people need is found in ____.

Answer 31

watersheds

Question 32

______ is the process of removing salt from ocean water.

Answer 32

Desalination

Question 33

A tourist stepping on coral can cause _____.

Answer 33

coral bleaching

Question 34

_____ uses the process of diffusion through a membrane to desalinate water.

Answer 34

Reverse osmosis

Question 35

underground rocks and formations that are able to hold groundwater

Answer 35

aquifer

Question 36

an aquifer with a surface that keeps water from infiltrating, so the water must enter the aquifer at a point farther away

Answer 36

unconfined aquifer

Question 37

water trapped in ancient aquifers formed 12,000 years or more ago

Answer 37

fossil water

Question 38

water that has infiltrated below the ground

Answer 38

groundwater

Question 39

The amount of water it took to grow the wheat in an imported sack of grain is known as _____ water.

Answer 39

virtual

Question 40

Soil erosion leads to an increase of _____ pollution in water.

Answer 40

suspended solids