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Science FINAL 2 > Plate Tectonics And Earthquakes > Flashcards

Plate Tectonics And Earthquakes Flashcards

0
Q

Liquid layer of earth core

A

Outer core

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1
Q

Outermost layer of earth

A

Lithosphere

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2
Q

Fault cause of tension

A

Normal

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3
Q

Fault cause compression

A

Reverse

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4
Q

Reverse fault where does the hanging wall move relative to the footwall?

A

Upward

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5
Q

Normal fault, hang wall move to footwall

A

Downward

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6
Q

Force to sharp mts

A

Tension

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7
Q

Area where tectonic plates meet

A

Boundary

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8
Q

When tectonic plates collide

A

Convergent

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9
Q

Plates separate

A

Divergent

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10
Q

Plates slide past

A

Transform

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11
Q

NOT evidence for continental drift

A

Oceanic plate theory

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12
Q

1st continent

A

Pangea

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13
Q

Where does sea floor spreading take place

A

Mid ocean ridges

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14
Q

Measure movement of tectonic plates

A

Global Positioning System

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15
Q

Hardens to form new rock at mid ocean ridges

A

Magma

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16
Q

Measure density of earth layers

A

Seismograph

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17
Q

Evidence for continental drift

A

Fossils

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18
Q

Evidence for sea floor spreading

A

Magnetic reversal

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19
Q

Steppes that squeezes a rock layer

A

Compression

20
Q

The raising of rock layer

A

Uplift

21
Q

Stress that stretches rock layer

A

Tension

22
Q

Sinking rock layer

A

Subsidence

23
Q

Most earthquakes occur along edges of

A

Tectonic plates

24
Q

What deformation leads to eqs

A

Elastic deformation

25
Q

NOT a fault that lead to earthquakes

A

Abnormal fault

26
Q

Waves of energy

A

Seismic waves

27
Q

The epicenter is

A

Directly above the focus

28
Q

Strength of earthquake is determined by

A

The amount of ground motion

29
Q

Scale to measure strength of an eq

A

Ritchie’s magnitude

30
Q

Intensity determined by

A

Amount of damage

31
Q

Measure of How likely an area is to experience an earthquake is

A

Earthquake hazard level

32
Q

Forecast earthquakes by observing their past

A

Strength and frequency

33
Q

NOT kind of technology to construct eq resistant buildings.

A

Tectonic plate

34
Q

When in a car when earthquake begin

A

Stop car and stay inside

35
Q

Waves known as secondary or shear

A

S waves

36
Q

Begin point of eq

A

Focus

37
Q

Branch of science eqs

A

Seismology

38
Q

Change in rock repsonded to stress

A

Deformation

39
Q

First waves to. Arrive

A

P waves

40
Q

Snapping back of deformed rock to its previous shape

A

Elastic rebound

41
Q

Tracing of eq motion

A

Seismogram

42
Q

Recorder of seismic waves

A

Seismograph

43
Q

Shock absorber for seismic waves

A

Seismogram

44
Q

Method find eq epicenter

A

S-p time method

45
Q

Area where few eqs have happened but will in the future

A

Seismic gap

46
Q

Major eq where none occurred recently

A

Gap hypothesis

47
Q

Weaker eqs after strong eq

A

Aftershocks

Science FINAL 2 (4 decks)

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