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Economics/ Water Use APES > Water Resource > Flashcards

Flashcards in Water Resource Deck (65):
1

The largest catch that can be taken from a species stock without causing the population to decline from year to year is

maximum sustained yield

2

the land from which the surface drains into a body of water

watershed

3

A water purification technology that uses semi permeable membrane to remove larger particles from drinking water is

reverse osmosis

4

any industry or occupation devoted to catching processing or selling fish shellfish or other aquatic animals is

fishery

5

The amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period is

BOD

6

this forms when the roof of an underground cavern collapses after being drained of groundwater

sinkhole

7

A sub population of a particular species of fish which has a degree of reproductive isolation from other sub populations of the same species of fish in a space time or in both is referred to as a

fish stock

8

and irrigation method that saves water and fertilizer by allowing water to be added slowly directly to the roots of plants or into the soil surface is

drop irrigation

9

species unintentionally caught while fishing for different target species are referred to as

bycatch

10

water purification method in which salt water is heated until it evaporator leaving behind salt in a solid form is

distillation

11

using long expenses of nets that hang down into the water to catch passing fish is a method called

drift net

12

any underground layer of water bearing permeable Rock from which groundwater can be extracted using a water well is a

aquifer

13

A measure of the combined content of all in organic and organic substances found in a suspended form in water is

TDS

14

changing the amount of precipitation that falls from clouds by dispersing substances into the air that serve as condensation nuclei is

cloud seeding

15

A water quality test to measure the amount of N03 in the water is called

nitrates

16

if fishing technique that uses a funnel shaped net to drug along the ocean bottom is

bottom trawling

17

A method of crop irrigation in which a sprinkler rotates around a central point and waters plants directly from above is

center pivot irrigation

18

any water that has been adversely affected in quality by human actions is

wastewater

19

A series of tests that are used to determine the overall quality of a source of water is

WQI

20

A fishing technique in which a series of baited hooks are strewn into the water is

long line fishing

21

and artificial channel that is constructed to convey water from one location to another is a

aqueduct

22

A water quality test that measures the amount of P043- present in a water source is

phosphates

23

A fishing technique in which a large well of netting deployed around an entire area or school of fish is

purse seine

24

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

reservoir

25

water quality test that tests for the presence of bacteria found in human feces is

coliform

26

The farming of aquatic organisms such as fish crustaceans mollusks and aquatic plants is

aquaculture

27

The aquatic ecosystem response to the addition of artificial or natural substances mainly phosphates and nitrates to detergents fertilizers or sewage to an aquatic ecosystem is

cultural eutrophication

28

another word for watershed is

drainage basin

29

water quality test in which water clarity is tested by submerging a seechi disk and seeing how deep the disk goes before it becomes too cloudy to see

turbidity

30

The water located beneath the earth surface in a soil poor spaces and in fractures of rock formations is

groundwater

31

A fishing practice that is done it is sustainable rate where the fish population does not decline over time because of fishing practices

sustainable fishing

32

The city of Riverside primarily uses which source of water for a municipal use

aquifers

33

The city of Los Angeles primarily uses which source of water for their municipal use

lost angeles aqueduct

34

San Diego primarily uses which source of water for their municipal use

Colorado aqueduct

35

increasing the water level in an aquifer is called

recharging

36

water levels increase in aquifers when

water percolates down thru the soil in the aquifers watershed

37

The biggest user of water in the US is for

agriculture

38

The biggest user of water worldwide is for

agriculture

39

available freshwater sources are greater in

eastern US

40

aquifer is generally considered a _________ resource

renewable

41

which aqueduct leads from the eastern boundary of California into southern California

Los Angeles aqueduct

42

which aqueduct leads from the Owens Valley and to Southern California

Los Angeles aqueduct

43

which aqueduct leads from sierra Nevada mountains east of Sacramento into Southern California

california aqueduct

44

which aqueduct provides San Francisco water

california aqueduct

45

Valley that was flooded during the construction of an aqueduct to bring water to San Francisco

hetch hetchy

46

primary reason for the large scale die version of water from the Aral Sea is

aqriculture

47

The Aral Sea is located in

Kazakhstan

48

which fishing method results in the most by catch

bottom trawling

49

which fishing method results in the least amount of by catch

aquaculture

50

which fishing method results in the greatest amount of habitat distructiom

bottom trawling

51

nutrient run off results in algal blooms was which eventually _____________ The amount of dissolved oxygen in an aquatic ecosystem as the algae run out of nutrients and die off and decompose

decrease

52

The main source of nutrients added aquatic ecosystems in the US is from

run off from agricultural areas

53

The process in which a nutrient run off ultimately results in species die offs do to lowered DO levels is called

eutrophication

54

in order for a water resource to be given A rating of excellent the WQ I must be above

85

55

what percent of earths total water supply of available freshwater for human use is left

much less then 1%

56

which continent contains the majority of earths freshwater resources

Asia

57

which continent has more water resources percentage wise than population percentage wise

south america

58

approximately what percentage of the worlds population lives in an area that experiences water shortages

50

59

The most reasonable solution for providing water to the worlds population is

waste less water

60

aquifers are considered _________ resources

renewable

61

The largest dam in the world is

Three Gorges, China

62

proximately what percentage of the water diverted and pumped out of aquifers for human use is wasted

65

63

approximately what percentage of water that is applied to agricultural areas is wasted

60

64

approximately what percentage of fish that are caught are considered by catch

30

65

approximately what percentage of fish species are considered to be fish at or past their sustainable limits

75