Earthquakes

Question 1

Movement of P-wave

Answer 1

Compress and expand like an accordion

Question 2

Movement of S-wave

Answer 2

Side-to-side, Up-and-down; only travels through solids

Question 3

Movement of surface wave

Answer 3

Rolling Motion, elliptically, shake side to side, slowest

Question 4

Compared to S-waves and P-waves, surface waves are __________.

Answer 4

Slower

Question 5

______________ can cause damage days of months after a large earthquake.

Answer 5

Aftershock or liquefaction

Question 6

______ waves arrive at the surface first and move by compression and expanding the ground like an accordion.

Answer 6

Primary

Question 7

The _________ is the point beneath Earth’s surface where the rock breaks under stress and triggers an earthquake

Answer 7

Hypocenter or focus

Question 8

What the Richter scale measures

Answer 8

Size based on the size of seismic waves

Question 9

What the Moment Magnitude scale measures

Answer 9

Total energy released at a given place

Question 10

What the Mercalli scale measures

Answer 10

Damage and what people felt

Question 11

Normal Fault

Answer 11

Hanging wall slips due to tension
EX: Rio Grande Rift Valley

Question 12

Strike Slip Fault

Answer 12

Slides horizontally in opposite directions
Caused by shearing
EX: San Andreas Fault

Question 13

Reverse Fault

Answer 13

Hanging wall moves up
Caused by compression
EX: Rocky Mountains

Question 14

Syncline

Answer 14

Fold in rock that bends downward to form a valley
Caused by compression
EX: Appalachian Mountains

Question 15

Anticline

Answer 15

Fold in rock that bends upward into an arch
Caused by compression
EX: Appalachian Mountains

Question 16

Fault Block Fault

Answer 16

Two normal faults on either side of footwall slide downwards
Created by tension
EX: Grand Tetons

Question 17

When the footwall moves

Answer 17

NEVER!!!

Question 18

The land between two normal faults that moves upwards to form a ____________.

Answer 18

Fault Block mountain

Question 19

________ is a fold in rock that bends upward in an arch.

Answer 19

Anticline

Question 20

In a _____________, the rock on either side of the fault slide past each other sideways with little up or down motion

Answer 20

Strike-slip fault

Question 21

In a normal fault, the part of the fault that slips due to the tension is the ________________.

Answer 21

Hanging Wall

Question 22

An upward fold in a rock is called an ____________.

Answer 22

Anticline

Question 23

The squeezing together of rocks by stress is called _________.

Answer 23

Compression

Question 24

When an earthquake occurs, ____________ are the first seismic waves to arrive at a given location.

Answer 24

Primary waves

Question 25

During an earthquake, seismic waves move outward from the ____________ in all directions

Answer 25

Hypocenter or focus