13.2: The Epicenter, Focus, and Waves - Geosciences …
https://geo.libretexts.org/Learning_Objects/Laboratory/Book%3A_Laboratory_Manual_For_Introductory_Geology_(Deline_Harris_and_Tefend)/13%3A_Earthquakes/13.02%3A_The_Epicenter%2C_Focus%2C_and_Waves
WEBSep 11, 2019 · Earthquakes originate at a point called the focus (plural foci). From this point, energy travels outward in different types of waves. The place on the Earth’s surface directly above the focus is called the …
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