week 1 Flashcards

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1
Q

is a fracture or zone of fractures between two blocks of rock.

A

•A fault

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2
Q

may range in length from a few millimeters to thousands of kilometers.

A

Faults

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3
Q

relating to earthquakes or other vibrations of the earth and its crust.

A

Seismic

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4
Q

happens when two blocks of the earth suddenly slip past one another.

A

earthquake

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5
Q

are giant waves caused by earthquakes or volcanic eruptions under the sea.

A

Tsunamis

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6
Q

what are the Three Basic Fault Types

A

Normal fault
Reverse fault
Strike-slip fault

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7
Q

EXTENSION

A

normal fault

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8
Q

COMPRESSION

A

reverse fault

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9
Q

SHEAR

A

strike-slip fault

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10
Q

what are the Layers of the Earth

A

crust
mantle
outer core
inner core

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11
Q

Earth’s crust and its rigid upper mantle are broken into enormous slabs called ____.?

A

plates

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12
Q

Theory of Plate Tectonics

A

Earth’s crust and its rigid upper mantle are broken into enormous slabs called plates.These plates are all moving in different directions at different speeds.
Adjacent plates can crash together, pull apart or sideswipe each other.

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13
Q

the place where two plates meet is called a?

A

plate boundary

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14
Q

_____have different names, depending on how two plates are moving relative to each other.

A

boundaries

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15
Q

what are the 3 types of plate boundaries?

A

divergent
convergent
transform

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16
Q

result of two diverging plates is a?

A

valley-like rift

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17
Q

plates move apart/ move away from eachother

A

divergent boundaries

18
Q

plates move toward each other
Earthquakes and volcanoes are commonly experienced and found near ______ boundaries

A

convergent

19
Q

In Convergent boundaries, one of the two plates is descending
beneath the other.
This process is called ________.

A

subduction

20
Q

Formed when two plates slide past each other horizontally

A

transform boundaries

21
Q

Why do Earthquakes Occur?

A

Plate boundaries are made up of many systems of fractures called faults. The rough edges may cause the plates to rupture.

22
Q

Types of Fault

A

Reverse fault
Normal fault
Strike-slip fault

23
Q

a fault in which hanging wall moves down relative to the footwall as a result of extension. These are the most common faults

A

Normal FaultNormal FaultNormal Fault

24
Q

are two blocks of crust layer pulling apart, extending the crust
into a valley thus, creating a space

A

Normal Fault

25
Q

also called thrust fault.

A fault in which the hanging wall moves up relative to the footwall as a result of compression

A

Reverse Fault

26
Q

a fault in which two blocks of crust slide past each other on the same plane. The motion experienced is right or left lateral instead of up and down

A

Strike-Slip Fault

27
Q

are rocks sliding past one another on a horizontal plane,
with little to no vertical movement. Examples to these are the San Andreas Fault and
the Anatolian Fault

A

Strike-slip faults

28
Q

t o f
There are more than
a million earthquakes that occur
in the planet each year.
However, most of these are not felt and cause little disturbance on the surface.

A

t

29
Q

The study of earthquake waves is called?

A

Seismology

30
Q

an instrument that record seismic waves.
Earthquake waves can be detected at great distances

A

by Seismometers or Seismograph,

31
Q

a measure of the degree of earthquake shaking at a given locale based on the amount of damage.

A

Intensity

32
Q

estimates the amount of energy released at the source of the earthquake.

A

Magnitude

33
Q

Two measurements that describe the size of an earthquake are?

A

Intensity
Magnitude

34
Q

convergent 3 types

A

continental - continental
continental - oceanic
oceanic - oceanic

35
Q

mountains are formed

A

continental - continental

36
Q

volcanoes are formed

A

continental - oceanic - c

37
Q

islands are formed

A

oceanic - oceanic

38
Q

an instrument that record seismic
waves

A

Seismometers or Seismograph,

39
Q

A seismometer’s record is known as a _________.

A

seismogram

40
Q

The study of earthquake
waves is called ______?.

A

Seismology