HAZARDS

What is the minimum number of seismic stations data is necessary to locate the epicenter in the triangulation method?

• one

• two

• three

• four

From the seismogram, the distance to the epicenter can be determined by measuring

• the arrival time of surface waves

• the difference in the arrival times of the P and S waves

• the ratio of the amplitude of the longest P and S wave

• the speed of the surface waves

___ waves are the first and fastest seismic waves.

• Surface waves
• S waves
• P waves

Tags

NGSS.MS-PS4-2

An instrument that detects and measures earthquakes is a 

• seismogram
• focus seismic map
• focus
• seismograph 

Where are the S-waves located on this seismogram?

• A
• B
• C
• D

Tags

NGSS.MS-PS4-2

Where are the P-waves located on this seismogram?

• A
• B
• C
• D

Tags

NGSS.HS-PS4-1

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

• A
• B
• C
• D

What is the arrival time of the P-wave?

• 3:01:00

• 3:01:30

• 3:01:40

• 3:02:00

What is the arrival time of the S-wave?

• 3:01:40

• 3:05:00

• 3:05:30

• 3:10

What is the difference between arrival times of the P-waves at 3:01:40 and S-waves at 3:05:00?

• 3 minutes

• 3 minutes 20 seconds

• 4 minutes 20 seconds

• 4 minutes 40 seconds

Tags

NGSS.MS-PS4-1