Finding the Epicenter

A seismic station that is 2400 miles from the epicenter of an earthquake records the arrival time of the first P-wave at 10:00:00 (hours: minutes: seconds). At what time did the first S-wave arrive at this station?

• 9:54:20

• 10:05:40

• 10:07:05

• 10:12:40

Which seismic station is closest to the epicenter of the earthquake?

• A

• B

• C

Which seismic station is furthest from the epicenter of the earthquake?

• A

• B

• C

What is the difference in arrival times of the P and S waves?

• 5 min

• 1 min

• 4 min

• 6 min

Which seismic station is closest to the epicenter of the earthquake?

• X

• Y

• Z

Which seismic station has the biggest difference in the P wave arrival time and the S wave arrival time?

• X

• Y

• Z

How can you tell that location X is closest to the epicenter of the earthquake?

• It has the biggest circle

• It has the smallest circle

• It is a circle on the map

• It is located near the top right corner

Tags

NGSS.MS-ESS3-2

Which letter represents the epicenter of the earthquake?

• A

• F

• G

• D

What was the distance from this location to the earthquake's epicenter?

HINT: First you have to find the time difference between P and S wave arrivals.

• 400 miles

• 1000 miles

• 1200 miles

• 1500 miles

Tags

NGSS.MS-PS3-4

How far from an earthquake epicenter is a city where the difference between the P-wave and S-wave arrival times is 6 minutes?

• 900 miles

• 2,000 miles

• 2,500 miles

• 2,700 miles