Earthquake Epicenter

Which of the seismic waves travels the fastest?

• Instant Wave

• Surface Wave

• Secondary Wave

• Primary Wave

Tags

NGSS.MS-PS4-2

How many seismograph stations are used to triangulate the epicenter?

• 1

• 2

• 3

• 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

How many possible epicenter locations would you have if you had the distance from one seismograph station to the epicenter?

• Infinite

• 1

• 2

• 3

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

Tags

NGSS.MS-PS4-2

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

• X

• Y

• Z

How many possible epicenter locations would you have if you had the distance from two seismograph stations to the epicenter?

• Infinite

• 1

• 2

• 3

What is the point on the Earth's surface directly above the earthquake's origin called?

• Epicenter

• Hypocenter

• Focus

• Seismic Point

Which instrument is used to detect and record earthquakes?

• Barometer

• Seismograph

• Thermometer

• Anemometer

What is the minimum number of seismograph stations needed to locate an earthquake's epicenter?

• 1

• 2

• 3

• 4