Disturbances inside Earth’s core cause earthquakes. The starting point of the disturbance is called the epicenter. Why does the amplitude of a seismic wave usually decrease as the wave moves away from the epicenter?
A.
The waves lose energy in the form of heat.
B.
The frequency of the waves continues to increase.
C.
The wavelength of the waves continues to decrease.
D.
The waves encounter entirely different mediums.

At farther distances, the amplitude of the seismic waves decreases as the energy released by the earthquake spreads throughout a larger volume and different mediums of Earth.

So we can conclude that option D is the right answer.

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lheduardomarques lheduardomarques · Answer 2 · 2022-07-15T18:55:02+02:00

The amplitude of a seismic wave generally decreases as the wave moves away from the epicenter because the waves encounter entirely different media.

Option D. The waves encounter entirely different mediums.

What are seismic waves and epicenter?

Seismic waves are waves of a mechanical nature, they propagate on Earth as a result of an earthquake or explosion. They are vibrations that are transmitted due to a release of energy from a specific point that is called a seismic focus. and the resistance found in the medium in which it propagates decreases the energy, dicipating it.

With this information, we can conclude that Seismic waves are movements of rock particles that are transmitted along concentric surfaces due to the sudden release of energy at the seismic focus.

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