Question

question 7
2 pts
what is the location within the earth where an earthquake originates?
vertex
focus
rayleigh center
epicenter
previous

Explanation:

• Vertex: This term is more commonly used in geometry (e.g., vertex of a polygon) and not related to earthquake origin.
• Focus: In the context of earthquakes, the focus (also called hypocenter) is the location within the Earth where the earthquake originates. Seismic waves radiate from this point.
• Rayleigh center: Rayleigh waves are a type of surface seismic wave, but "Rayleigh center" is not a standard term for the earthquake origin point.
• Epicenter: The epicenter is the point on the Earth's surface directly above the focus. It is not the location within the Earth where the earthquake starts.

Answer:

Focus