Answers2026-27 AL-Earth and Space SciencePlate Tectonics

Earthquakes Answers

11 verified answers3 views
1
Free Preview

The diagram shows circles drawn by geologists trying to determine the location of an earthquake’s epicenter.

Question illustration
A
location of an epicenter
B
location of a focus
C
location of a seismograph
D
location of a wave
2
Free Preview

Which statement describes the focus of an earthquake?

A
It creates stress in rock.
B
It develops in the lithosphere.
C
It lies above the surface where rock breaks.
D
It begins about 5 kilometers below Earth’s surface.
3

Which statement describes how geologists use data from seismographs to learn about earthquakes?

A
They often compare information from all over the world.
B
They map the location of an earthquake’s focus.
C
They use one reading to determine the location of an epicenter.
D
They measure the difference between the arrival times of surface waves.
4

Which statement describes S waves?

A
They move side to side.
B
They arrive before P waves.
C
They travel through liquids.
D
They occur at Earth’s surface.
5

Which statement describes the Mercalli scale?

A
This scale measures seismic waves based on their size.
B
This scale rates an earthquake according to how much damage it causes.
C
This scale produces a single rating for earthquakes that reach the surface.
D
This scale measures the magnitude of an earthquake based on the size of seismic waves.
6

How are S waves and P waves similar?

A
They shake the ground.
B
They travel through liquids.
C
They arrive at the same time.
D
They vibrate from side to side.
7

Which factor does the moment magnitude scale estimate?

A
damage
B
location
C
wave strength
D
energy released
8

Which statement describes the moment magnitude scale?

A
It measures only small earthquakes.
B
It uses data collected by a seismograph.
C
It shows only the strength of seismic waves that were produced.
D
It determines the amount of damage caused by an earthquake.
9

Which strategy do geologists use to locate the center of an earthquake?

A
They only analyze local data.
B
They collect data from seismographs.
C
They measure arrival times of surface waves.
D
They draw squares on maps for measurements.
10

Which of these factors is involved in earthquake formation?

A
plates getting larger
B
rocks breaking
C
stress that decreases
D
faults that remain stationary
11

What happens when stress builds at faults?

A
Energy is absorbed.
B
Rock can bend and break.
C
Plates form on the lithosphere.
D
Earthquakes develop at Earth’s surface.
12

Which statement describes surface waves?

A
They arrive before S waves.
B
They travel faster than P waves.
C
They are produced by P and S waves.
D
They travel deep below Earth’s surface.
13

Which phrase describes a feature of an earthquake’s epicenter?

A
starting point of an earthquake
B
place around the center of an earthquake
C
region directly above the focus
D
point about 100 kilometers deep in the lithosphere
14

The diagram shows circles drawn by geologists trying to determine the location of an earthquake’s epicenter.

Question illustration
A
location of an epicenter
B
location of a focus
C
location of a seismograph
D
location of a wave
15

How are S waves and P waves similar?

A
They shake the ground.
B
They travel through liquids.
C
They arrive at the same time.
D
They vibrate from side to side.
16

Which statement describes the Mercalli scale?

A
This scale measures seismic waves based on their size.
B
This scale rates an earthquake according to how much damage it causes.
C
This scale produces a single rating for earthquakes that reach the surface.
D
This scale measures the magnitude of an earthquake based on the size of seismic waves.
17

Which statement describes the Richter scale?

A
It cannot account for fault movement during an earthquake.
B
It measures large earthquakes far from the seismograph.
C
It estimates the total energy released from an earthquake.
D
It measures magnitude based on the size of seismic waves.
18

Which factor does the moment magnitude scale estimate?

A
damage
B
location
C
wave strength
D
energy released
19

Which statement describes S waves?

A
They move side to side.
B
They arrive before P waves.
C
They travel through liquids.
D
They occur at Earth’s surface.
20

Which statement describes P waves?

A
They start as surface waves.
B
They travel through liquids.
C
They vibrate from side to side.
D
They move slower than S waves.

Did you find these answers helpful?

More from this Course

Quiz
20 verified answers

Plate Tectonics

Quiz
18 verified answers

Characteristics of the Seafloor

Quiz
17 verified answers

Forces in Earth's Crust