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Physical Science Honors > Earthquakes Quiz > Flashcards

Earthquakes Quiz Flashcards

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1
Q

Three types of waves

A

Primary, Secondary, and Surface Waves

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2
Q

True or false: S-waves can travel through liquids

A

False

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3
Q

As depth increases…

A

…density increases

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4
Q

Four types of stress

A

compressive, tension, shear, and torsion stress

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5
Q

Elastic Rebound is…

A

the sudden release of strain energy

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6
Q

A fault is…

A

A crack in Earth’s crush where rock has moved

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7
Q

Object is squeezed or shortened

A

Compressive stress

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8
Q

Object stretched or lengthened

A

Tension stress

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9
Q

Object is stretched and pulled in opposite directions

A

Shear stress

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10
Q

Object is twisted

A

Torsion stress

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11
Q

What are the two surface waves?

A

Love waves and Rayleigh waves

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12
Q

Waves that move in a circular motion

A

Rayleigh waves

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13
Q

Waves that move up and down or side to side

A

Love waves

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14
Q

Waves that move up and down

A

Primary waves

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15
Q

Waves that move side to side

A

Secondary waves

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16
Q

The fastest seismic waves are…

A

Primary waves

17
Q

How are Rayleigh waves created?

A

They are created from the cross section of P and S waves

18
Q

What are the two body waves?

A

Primary and Secondary waves

19
Q

Narrow and shallow quakes are at…

A

Divergent boundaries

20
Q

Deep and wide quakes are at…

A

Convergent boundaries

21
Q

elastic deformation

A

when material deforms as stress is applied but goes back to original state when stress is removed

22
Q

plastic deformation

A

when material deforms as stress is applied and remains in new shape once stress is removed

23
Q

the focus is….

A

point of origin of an earthquake

24
Q

epicenter is…

A

the point on the surface directly above the focus

25
Q

hypocenter is…

A

this is where the earthquake originates

26
Q

the three main strategies of earthquake protection…

A

active dampening, diagonal steel bars, base isolation

27
Q

Mercalli scale measures…

A

ranks quakes by level of destruction (I to XII)

28
Q

Richter scale measures…

A

Amount of nrg released during quake (1.0+)

29
Q

refraction occurs…

A

when a change in wave speed causes a wave to bend/change directcion

30
Q

discontinuity is…

A

the boundaries between two layers of material that have different density

31
Q

the inner core is solid because…

A

the pressure is greater than the high temperatues

32
Q

the outer core is liquid because…

A

the high temperature is higher than the high pressure

33
Q

the discontinuity that separates crust from mantle…

A

…is Mohorovicic

34
Q

what do earth’s lithosphere plates move on?

A

they move on the anthenosphere

Physical Science Honors (5 decks)

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