4: MATCHING DEFINITIONS 18. A process by which data from three distinct places are used to narrow down the location of a single point. 19. The geographic point that lies directly above the point where an earthquake occurs. 20. The point underground where energy is released during an earthquake. 21. The type of body wave in which sediments travel parallel to the direction of the wave. 22. The type of body wave in which sediments travel perpendicular to the direction of the wave. a. Pressure Wave b. Triangulation c. Epicenter d. Shear Wave e. Focus/Hypocenter