chp 11. key terms Flashcards

1
Q

surface water

A

water that collects on the surface of the ground

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2
Q

river system

A

a drainage basin or watershed

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3
Q

watershed

A

an area or ridge of land that separates waters flowing to different rivers, basins, or seas

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4
Q

groundwater

A

water held underground in the soil or in pores and crevices in rock.

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5
Q

aquifer

A

a body of permeable rock which can contain or transmit groundwater

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6
Q

porosity

A

the quality or state of being porous

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7
Q

permeability

A

the state or quality of a material or membrane that causes it to allow liquids or gases to pass through it.

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8
Q

recharge zone

A

a 1,250 square mile area where highly faulted and fractured Edwards limestones outcrop at the land surface, allowing large quantities of water to flow into the Aquifer

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9
Q

potable

A

safe to drink; drinkable

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10
Q

pathogen

A

a bacterium, virus, or other microorganism that can cause disease

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11
Q

dam

A

a barrier constructed to hold back water and raise its level, forming a reservoir used to generate electricity or as a water supply

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12
Q

reservoir

A

a large natural or artificial lake used as a source of water supply.

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13
Q

desalination

A

the process of removing salt from seawater.

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14
Q

water pollution

A

the contamination of water sources by substances which make the water unusable for drinking, cooking, cleaning, swimming, and other activities.

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15
Q

point source solution

A

a source of radiation (such as light) that is concentrated at a point and considered as having no spatial extension

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16
Q

nonpoint source pollution

A

diffuse contamination (or pollution) of water or air that does not originate from a single discrete source

17
Q

wastewater

A

water that has been used in the home, in a business, or as part of an industrial process

18
Q

artificial eutrophication

A

occurs when human activity introduces increased amounts of these nutrients

19
Q

thermal pollution

A

the discharge of heated liquid (such as wastewater from a factory) into natural waters at a temperature harmful to the environment.

20
Q

biomagnification

A

the concentration of toxins in an organism as a result of its ingesting other plants or animals in which the toxins are more widely disbursed.