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4. Where seismic waves come from. focus or epicenter?
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Sagot :

Tawanbijj02idn
Epicenter po need explanations?
Unknown0but0knownidn

Answer:

Focus.

Explanation:

The location at which the stress built up and then released is called the focus. Seismic waves travel from the focus outwards in all directions. The point on the surface of the Earth at which a seismic wave first hits is called the epicenter. The epicenter is directly above the focus.

Seismic waves are waves of energy that travel through Earth's layers and are a result of earthquakes, volcanic eruptions, magma movement, large landslides, and large man-made explosions that give out low-frequency acoustic energy. Many other natural and anthropogenic sources create low-amplitude waves commonly referred to as ambient vibrations.

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