Unit 4

Question 1

Major earthquakes are sometimes preceded by smaller earthquakes

Answer 1

Foreshocks

Question 2

Earth’s inner core is solid because of

Answer 2

immense pressure

Question 3

Earthquakes are usually associated with

Answer 3

Focus

Question 4

During the earthquake, the ground surface

Answer 4

Can move in any direction

Question 5

The Hypothesis that explains the release of energy is called

Answer 5

Elastic bound hypothesis

Question 6

The San Francisco earthquake in 1906 occurred along what Fault?

Answer 6

San Andreas Fault

Question 7

What are tsunamis caused by?

Answer 7

Sudden movements in ocean floor/earthquakes

Question 8

The adjustments that follow a major earthquake often generate smaller earthquakes called

Answer 8

Aftershocks

Question 9

The greatest concentration of metals occurs in the Earth’s

Answer 9

core

Question 10

The “trace” or record that records the Earthquake from seismic instruments is called a

Answer 10

Seismogram

Question 11

What statement is true about P (primary) waves?

Answer 11

They travel faster than 5 waves

Question 12

An earthquake results from a sudden release of energy at

Answer 12

focus

Question 13

The continental crust is mostly composed of

Answer 13

Granite

Question 14

An earthquake’s epicenter is the place on the surface

Answer 14

Directly above the focus

Question 15

Most of the information about the Earth’s interior was obtained by studying

Answer 15

earthquake waves

Question 16

Why do earthquake’s often cause damaging fires?

Answer 16

The break gas lines and electrical lines.

Question 17

In which area would damage from an earthquake measuring 6.8 likely be the greatest?

Answer 17

Area with older brick structures

Question 18

What instrument records earthquake waves?

Answer 18

seismograph

Question 19

The slow continuous movement that occur along some fault zones is referred to as

Answer 19

Creep

Question 20

Which seismic waves travel most rapidly?

Answer 20

P waves

Question 21

Small Foreshocks that precede a major earthquake occur

Answer 21

Days or years before major earthquake

Question 22

A time-travel graph can be used to find the

Answer 22

distance to the epicenter of an earthquake