Brainscape's Knowledge GenomeTM

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


See full index

School Study Stuff > Earthquakes > Flashcards

Earthquakes Flashcards

1
Q

What are the earthquakes detected by?

A

Seismographs

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

What is the theory behind Earthquakes called?

A

Elastic Rebound Theory

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

What is the Epicenter?

A

This is the point on the surface right above the focus.

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

What is the Focus?

A

The point below the surface where the rock breaks and energy is released. Sometimes the strongest part of the seismic waves from the earthquakes are found here.

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

What do seismic waves carry?

A

Energy

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

What is a seismogram?

A

is a record of seismic activity produced by a seismograph.

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

What is an earthquake?

A

Is the shaking results when rocks move inside Earth

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

What is an earthquake caused by?

A

caused by stress along a fault.

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

Where does Earthquakes occur?

A

Focus

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

What do Earthquakes cause?

A

Seismic Waves

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

What do seismic waves carry?

A

carry the energy released by the rocks.

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

What are the three kinds of waves?

A

P waves-Primary Waves
S waves-Secondary Waves
Surface Waves

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

What are some traits of S waves?

A

Transverse
Slow Moving
Travel through solids only

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

What are some traits of P waves?

A

Fast Moving
Longitudinal
Travel through liquids and solids

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

What type of movement do P waves make?

A

back and forth (side to side)

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

True or False: S waves are slower and cause more damage than P waves

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What type of motion does S waves make?

A

Up and down

18
Q

What type of motion does Surface Waves make?

A

Ground Roll

19
Q

What are fault scarps?
What are fissures?

A

Steplike linear landform coincident with a fault trace and caused by geologically recent slip on the fault
Cracks or ruptures on earth’s surface from earthquakes, but without offset

20
Q

Where do earthquakes occur?

A

Tectonic Plate Boundary

21
Q

The return of rock to its original shape after elastic deformation is called what?

A

Elastic Rebound

22
Q

What does tension stress cause from divergent boundaries?

A

Normal Faults

23
Q

What does squeezed stress cause from convergent boundaries?

A

Reverse Faults

24
Q

What does shear stress cause from transform boundaries?

A

Shallow Earthquakes

25
What are the deaths from earthquakes most likely going to be about?
Buildings
26
What is a tsunami?
is a series of extremely long waves that can travel across the ocean at speeds of up to 500 mph.
27
What was one of the killer quakes?
In 2004, an earthquake generated a tsunami that wiped out half the population in Banda Aceh, Indonesia.
28
A fold that bends downward is known a(n)
Syncline
29
A place where rock breaks but doesn't move is called a
joint
30
Most of the worlds largest mountains come from?
Convergent Boundaries
31
What is a footwall?
where the rock is beneath the fault
32
What is a strike-slip fault?
a dip slip fault where the dip of the fault plane is vertical
33
What is a dip-slip fault?
fault with a fault plane that dips at an angle
34
What is a thrust fault?
reverse fault in which the fault plane is nearly horizontal
35
What is a hanging wall?
block of rock that is above a dip-slip fault plane
36
Where do 80% of all Earthquakes take place?
The Pacific Ring of Fire
37
Surface waves that produce a rolling motion are?
Rayleigh Waves
38
What is the high-point of a wave?
Crest
39
What is the low-point of a wave?
Trough
40
Finding the amplitude of a seismic wave is one way of determining its?
Magnitude
41
If a seismograph records only P waves and surface waves for an earthquake, the earthquake must be
on the opposite side of Earth from the seismograph
42
Where did the Great Alaskan Earthquake occur?
At a subduction zone

School Study Stuff (40 decks)

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