Question

An earthquake always begins:________

Answer 1

An earthquake still starts at the moho.

What is an earthquake?

• The surface of the Earth shakes violently during an earthquake. The Earth's outermost layer is moving, which is what is causing the shaking.
• The term "earthquake" is used to represent both a sudden slide on a fault and the resulting ground shaking and transmitted seismic energy, as well as sudden changes in the earth's tension due to volcanic or magmatic activity or other causes.
• Sudden movement along Earth's fault lines causes earthquakes. The motion releases "elastic strain" energy that has been accumulated in the form of seismic waves, which travel through the Earth and cause the earth to tremble.
• Any sudden shaking of the ground brought on by seismic waves passing through the planet's rocks is referred to as an earthquake.

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Answer 2

An earthquake always begins at the moho.

What is an Earthquake?

The surface of the Earth shakes violently during an earthquake. Movements in the topmost layer of Earth are what are causing the shaking.

How Come Earthquakes Occur?

Although the Earth appears to be a rather stable planet from the surface, it is actually very active beneath the surface. A solid crust, a heated, almost solid mantle, a liquid outer core, and a solid inner core make up the Earth's four basic layers.

Therefore option (a) An earthquake always begins at the moho.

To learn more about earthquake, refer:

brainly.com/question/20409140

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