Question

1.What did you observe happened when a P-wave traveled from a solid to a liquid?

2.What did you observe happened when an S-wave traveled into a liquid?



3.In your own words, describe how a primary wave moves.



4.In your own words, describe how a secondary wave moves.



5.How do earthquakes help us learn about the interior of the Earth?

Answer 1

1. Some portion of the primary waves become secondary depending on the angle of incidence.
2. S-waves move faster and spread out when it travels through liquids.
3. Primary waves are longitudinal waves.
4. Secondary waves are transverse waves.
5. Monitoring the arrival of both primary and secondary waves will determine the liquid component of the core.