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physical science > 27.3 > Flashcards

27.3 Flashcards

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Biology 101 flashcards
1
Q

what percentage of water on earth is salt water

A

97%

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2
Q

what percentage of earths water is freshwater

A

3%

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3
Q

where is the majority of the freshwater found

A

glaciers

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4
Q

where is the smaller percentage of fresh water found

A

lakes, rivers, and ground water

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5
Q

what is precipitation

A

rain, snow, sleet, and hail

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6
Q

what is run off

A

water runs of lands surface

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7
Q

what is infiltration

A

water becoming ground water

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8
Q

what is transpiration

A

when plants release water vapor into the atmosphere

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9
Q

what is evaporation

A

when water enters the atmosphere as water vapor

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10
Q

what is condensation

A

water vapor condenses into water droplets

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11
Q

what is the water cycle

A

water moves from the earths surface, to the atmosphere, and back to the surfac3e

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12
Q

what is an unsaturated zone for groundwater storage

A

a porus area where water passes through

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13
Q

what is a saturated zone for ground water storage

A

beneath the unstaurated zone, where water completely fills with water

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14
Q

what is a water table

A

the upper boundary of the saturated zone

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15
Q

what does it mean if sediment is permeable

A

it allows water to pass, less permeable means less water will pass, and vice versa

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16
Q

what is an aquifer

A

a rock iunit can transfer water through pore space

17
Q

what is the name of the great plains aquifer run through

A

ogallala aquifer

18
Q

how many states does he great plains aquifer run through

A

8 states

19
Q

what are the names of the states that the great plains aquifer runs through

A

south Dakota, Wyoming, Nebraska, Colorado, Kansas, Oklahoma, new mexico, and Texas

20
Q

what is an aquitard

A

keep water from passing

21
Q

how are springs formed

A

where the water table naturally meets the earths surfaceq

22
Q

what is an artesian well

A

when you drill into a pressurized aquifer

23
Q

what is a cone of depression

A

water flows down towards a well

24
Q

Absolute dating

A

the procces of assigning an exact numerical age to an organism, an object, or an event

25
Q

Relative dating

A

the process of placing objects or events in their proper order in time

26
Q

uniformitarism

A

States that the laws of nature operate today as they have in the past

27
Q

principle of superposition

A

states that in an undisturbed sequence of sedimentary rock layers, the youngest rock will be at the top and the oldest layer of rocks will be at the bottom

28
Q

unconformity

A

gaps in the rock record during which either erosion occurred or deposition was absent

29
Q

fossil

A

the remains or traces of organisms found in the geological rock record

physical science (10 decks)

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