Here is the matching of terms from Column A with their corresponding definitions in Column B:
- P waves: a. Fastest of the Seismic waves that travel in a straight line; arrives at the surface first.
- S waves: b. Slowest of the seismic waves that travels back and forth, getting to the surface second.
- Epicenter: c. Area on land, just above the origin of the earthquake, where the magnitude is felt the most.
- Focus: d. The origin of the earthquake deep in the crust.