Test Your Knowledge About the Unit 3 Chapter

What is your name?

1. The location of an epicenter can be determined by plotting how many seismic stations?

0

1

2

3

2. Which seismic wave is the first to always reach a seismic recording station?

primary wave, P-wave

secondary wave, S-wave

L-wave

K-wave

3. The lag-time of a seismic station is calculated by:

subtracting the arrival time of the S-wave from the arrival time of the P-wave

subtracting the arrival time of the P-wave from the arrival time of the S-wave

subtracting the arrival time of the P-wave from origin time of the earthquake

subtracting the arrival time of the S-wave from origin time of the earthquake

4. What type of seismic waves are detected in the shadow zone of an earthquake?

Only S-waves are detected

Only P-waves are detected

both S-waves and P-waves are detected

neither S-waves or P-waves are detected

5. As magma solidifies into an igneous rock, the iron in the rock preserves the direction of the Earth's magnetic field at that moment in time. Which type of plate boundary is associated with the near perfect symmetry of magnetic polar reversals?

divergent plate boundary

convergent plate boundary

transform plate boundary

subducting plate boundary