All about the epicenter!

What method do seismologists use in locating an epicenter?

• Focus Group Discussion

• Interview

• Observation

• Triangulation

Which of the seismic waves travels the fastest?

• Instant Wave

• Surface Wave

• Secondary Wave

• Primary Wave

Tags

NGSS.MS-PS4-2

As the distance from the epicenter decreases, the time interval between the arrival of the P-waves and the S-waves on the seismograph will _________________

• decrease

• increase

• remain the same

• zero

Where is the epicenter for this earthquake located based on triangulation?

• A
• B
• C
• D

Where are the P-waves located on this seismogram?

• A
• B
• C
• D

Tags

NGSS.MS-PS4-2

Which of the statements best describes the relationship between lag time and distance from epicenter? 

• The longer the lag time, the closer the distance.
• The longer the lag time, the farther the distance. 
• The shorter the lag time, the farther the distance. 
• There is no relationship. 

Tags

NGSS.MS-ESS3-2

How many seismograph stations are used to triangulate the epicenter?

• 1

• 2

• 3

• 4

Which of the four seismic stations is located farthest from

the epicenter?

• A

• B

• C

• D

Which graph best represents the relationship between the

differences in arrival times of P-waves and S-waves for

locations at varying distances from an earthquake?

• 
• 
• 
• 

Tags

NGSS.HS-PS4-1

On another day, location A records the arrival of

compression waves (P-waves), but not shear waves

(S-waves), from a distant earthquake. Which statement best

explains why shear waves were not received?

• A) Shear waves are stopped by the iron and nickel inner

  core.

• B) Shear waves are transmitted through all parts of the

  Earth.

• C) Shear waves are not transmitted through the Earth's

  outer core.

• D) Shear waves are faster than compression waves.

Tags

NGSS.MS-PS4-2