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Flashcards in earthquakes Deck (23)
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1
Q

crust

A

earth’s outer most layer

2
Q

earthquake

A

movement of the ground caused by the waves of energy releases as move along the faults.

3
Q

elastic limit

A

the limit of how far it will stretch or bend.

4
Q

epicenter

A

point on earth’s surface directly above the focus.

5
Q

Fault

A

Surface along which rocks break and move.

6
Q

focus

A

Point in earth’s interior where the energy releases and occurrs

7
Q

Inner core

A

center of the earth -iron and nickle

8
Q

Magnitude

A

measure of the energy reaches in an earthquake.

9
Q

Mantle

A

largest layer, above outer core. -silicon, magnesium, oxygen and iron.

10
Q

Moho discontinuity

A

boundary between earth’s crust an the mantle -seismic waves travel faster below the Moho.

11
Q

Normal fault

A

rock above the fault surface moves downward in relation to the rock below the earths surface.

12
Q

Outer core

A

liquid layer -silicon, magnesium, oxygen and iron.

13
Q

Primary wave

A

earthquake waves that move back and forth same direction are called seismic waves, too.

14
Q

Reverse fault

A

rocks above the fault are forced up[ and over the rocks below the fault.

15
Q

Secondary wave

A

In an earthquake waves that causes particles in the rock to move at right angles to the direction of the wave.

16
Q

Seismic wave

A

in an earthquake the energy waves that moves outward from the earth.

17
Q

Seismograph

A

used to record, primary, seismic, secondary, & surface waves from earthquakes.

18
Q

Shadow zone

A

area on the other side of the earth where waves are not detected.

19
Q

Strike-slip fault

A

rock on either side of the surface move past each other w/ or down.

20
Q

Surface wave

A

earthquake waves that travel outward from the epicenter. these wave a particular fashion back and forth movement.

21
Q

Tsunami

A

Ocean waves generated by earthquakes

22
Q

Compression

A

force of squeezing or pressing together.

23
Q

tension

A

is stress that causes stretching.