Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Geology > Groundwater > Flashcards

Groundwater Flashcards

1
Q

What is Porosity?

A

Void Volume / Total Volume

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is permeability?

A
  • the capacity of rock/soil to allow fluid to pass through it
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is porous rock?

A

a rock that holds water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is permeable rock?

A

a rock that allows water to flow easily through it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is impermeable rock?

A

a rock that does not allow water to flow through it easily

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Groundwater is formed by ______________

A

infiltration of rain water through soils

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is aquifer?

A

A body of saturated rock or sediment through which water can move easily

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is unconfined aquifer?

A

A body of material that has uniform permeability to the
surface in both recharge and discharge areas.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is confined aquifer?

A

a permeable unit that is bound above and below by
impermeable layers that restrict the flow of water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is aquitards?

A

compacted layers of clay, silt or rock that retard water flow
underground with <1% porosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is aquicludes/aquifuge?

A

geological material through which zero flow occurs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is influent stream?

A

a stream that lies above the water table and may recharge the ground water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is effluent stream?

A

where groundwater discharges to the stream on surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is Recharge?

A

the infiltration of water into subsurface materials

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is Discharge?

A

the exit of groundwater to the surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Water flow in a confined aquifer is known as ________ flow and occurs under pressure

A

artesian

17
Q

A 4th order stream is formed when _______________

A

Two 3rd order streams combine

18
Q

Water extraction from groundwater aquifers should balance discharge with _____

A

recharge

19
Q

Fluid pressure in an aquifer is greatest at the ______________

A

base of the aquifer

20
Q

The water table is commonly a subdued replica of the land-surface topography. True or False?

A

True

21
Q

The coefficient of permeability depend on

A
  • material permeability
  • fluid density
  • fluid viscosity
22
Q

Excessive water removal from an aquifer can:

A
  • cause the ground surface to sink
  • compact reservoir material thus reducing its porosity
  • cause influx of undesirable fluids
23
Q

When groundwater flows into a lake, it is called:

A

groundwater discharge

Geology (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions