Earthquakes!!

Question 1

What's another name for S waves?

Accepted Answer

secondary

Question 2

The Coast Guard is warning of a giant wave approaching the shore after an earthquake. This is a

Accepted Answer

tsunami

Question 3

When a force causes a rock to change shape it is called

Accepted Answer

rock deformation

Question 4

Why can't geologists predict earthquakes?

Accepted Answer

they can't be sure when and where stress will be released

Question 5

Why is the risk of earthquakes is high along the Pacific coast of the United States?

Accepted Answer

that's where the Pacific and North American plates meet.

Question 6

What is the force acting on a strike-slip fault?

Accepted Answer

shearing

Question 7

What type of earthquake wave can travel through both liquids and solids?

Accepted Answer

P waves

Question 8

How do surface waves compare to P waves and S waves?

Accepted Answer

Surface waves move slower.

Question 9

What type of plate boundary can result in a strike-slip fault?

Accepted Answer

transform boundary

Question 10

What is the point beneath Earth's surface where rock breaks and triggers an earthquake?

Accepted Answer

focus

Question 11

In what direction do seismic waves carry the energy of an earthquake?

Accepted Answer

away from the focus

Question 12

What does a seismograph record?

Accepted Answer

the ground movements caused by seismic waves

Question 13

Which scale would tell how much earthquake damage was done to homes and other building?

Accepted Answer

Mercalli scale

Question 14

When stress that has built up due to rocks moving against each other is released

Accepted Answer

earthquakes will happen

Question 15

Which type of seismic wave moves rock in the same direction as the wave?

Accepted Answer

P waves

Question 16

Where is the epicenter of an earthquake located?

Accepted Answer

Point A

Question 17

What causes most earthquake-related deaths and injuries?

Accepted Answer

damage to buildings or other structures.

Question 18

What's the name of the rating system that estimates the total energy released by an earthquake?

Accepted Answer

moment magnitude scale.

Question 19

What happens when friction between opposite sides of a fault is high?

Accepted Answer

Stress builds up until an earthquake occurs.

Question 20

The Earth's crust at the mid-ocean ridge is under tension. What does this result in?

Accepted Answer

normal faults.

Question 21

Which type of stress force produces reverse faults?

Accepted Answer

compression

Questions 21