Chapter 6 - Earthquakes

Question 0

Accelerometer

Answer 0

Measures changes in speed

Question 1

Seismometer

Answer 1

An instrument that measures earth waves

Question 2

A series of low-frequency shock waves, somewhat like sound waves, traveling through the earth

Answer 2

Earthquake

Question 3

T/F. Most earthquakes are too slight for a person to feel.

Answer 3

True

Question 4

What is an example of tension stress?

Answer 4

The pulling on a rope

Question 5

What is the most important stress in producing earthquakes?

Answer 5

Shear stress

Question 6

Which plate sections are moving apart?

Answer 6

Divergent boundaries

Question 7

Which zones of collision are moving toward each other?

Answer 7

Convergent boundaries

Question 8

Places where plates slide past each other in opposite directions along long cracks in the crust

Answer 8

Transform boundaries

Question 9

T/F. Al, materials respond to shear stress the same way.

Answer 9

False

Question 10

What’s the difference between a joint and a fault?

Answer 10

Movement

Question 11

Cracks formed when rocks under stress begin to fail

Answer 11

Joints

Question 12

A crack in a rock where movement has occurred

Answer 12

Fault

Question 13

What kind of fault is the San Andreas?

Answer 13

Strike-slip fault

Question 14

T/F. Not all transform boundaries are strike-slip faults.

Answer 14

False

Question 15

Strike-slip faults are also called…

Answer 15

Transform faults

Question 16

T/f. Certain kinds of minerals and even water lubricate faults

Answer 16

True

Question 17

Secondary earthquakes

Answer 17

Aftershocks

Question 18

Include both a seismometer and a way to record or graph the changing earth waves

Answer 18

Seismograph

Question 19

Fastest body waves; travel through both solid and liquid rock

Answer 19

P waves

Question 20

Can’t travel through liquids

Answer 20

S waves

Question 21

Kinds of waves

Answer 21

S, p, Rayleigh, love, and surface

Question 22

The center of an earthquake’s activity

Answer 22

Focus

Question 23

How many stations does it take to pinpoint an earthquake’s epicenter to one location?

Answer 23

Three

Question 24

Indicates the energy released by the earth movement

Answer 24

Richter scale

Question 25

What units is the Richter scale given in?

Answer 25

Units of magnitude

Question 26

How much more energy does a 3 earthquake have than a 2?

Answer 26

31.6 times

Question 27

Could the whole world feel it if there was an earthquake of a 10 on the Richter scale?

Answer 27

Yes

Question 28

T/F. The Richter scale goes only up to 10

Answer 28

False. The Richter scale has no limit

Question 29

A measure of how much damage actually results from the earthquake

Answer 29

An earthquake's intensity

Question 30

T/F. Architects know how to design buildings that can resist collapsing in earthquakes up to magnitude 6.0

Answer 30

False

Question 31

Large tidal waves that earthquakes trigger

Answer 31

Tsunamis

Question 32

T/F. An early warning system is not the same thing as predicting when an earthquake will happen

Answer 32

True