Plate Tectonics Lesson 3: Finding the Epicenter

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

Where are the S-waves located on this seismogram?

• A
• B
• C
• D

What happens to lag time the further you are from the epicenter?

• Increases
• Decreases
• Stays the same
• What is lag time?

Where is the epicenter located?

• A
• B
• C
• There is no epicenter

Where is the focus located?

• A
• B
• C
• There is no focus

What is the name of the waves given off by an earthquake? 

• Seismic waves
• Radiation waves
• Sound waves
• Compaction waves

Which is the first seismic wave to arrive at a seismograph station (where they are measured and detected)? 

• L wave
• R wave
• P wave
• S wave

Which is the second kind of wave to arrive at a seismograph station (where they are measured and detected)? ? 

• L wave
• R wave
• P wave
• S wave

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.