Question

define the term focus and epicenter.​

Answer 1

Answer:

Epicenter-The point on the Earth's surface located directly above the focus of an earthquake. Focus-The location where the earthquake begins. The ground ruptures at this spot, then seismic waves radiate outward in all directions.

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Answer 2

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Focus - In geometrical optics, a focus, also called an image point, is the point where light rays originating from a point on the object converge. Although the focus is conceptually a point, physically the focus has a spatial extent, called the blur circle.✔✔

Epicentre - The epicenter, epicentre /ˈɛpɪsɛntər/ or epicentrum in seismology is the point on the Earth's surface directly above a hypocenter or focus, the point where an earthquake or an underground explosion originates.✔✔

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