EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a seismic wave that travels through the body of a medium.
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a seismic wave that travels along the surface of a medium and that has a stronger effect near the surface of the medium than it has in the interior.
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the point on the Earth’s surface directly above an earthquake’s starting point.
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the location within Earth along a fault at which the first motion of an earthquake occurs.
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Detailed explanation-1: -The spot underground where the rock first breaks is called the focus, or hypocenter of the earthquake. The place right above the focus (at the ground surface) is called the epicenter of the earthquake. Cutaway view of the reverse fault. The earthquake starts at the focus, with slip continuing along the fault.
Detailed explanation-2: -The point on the Earth’s surface directly above the focus is called the epicenter of the earthquake.
Detailed explanation-3: -The focus is the place inside Earth’s crust where an earthquake originates. The point on the Earth’s surface directly above the focus is the epicenter. When energy is released at the focus, seismic waves travel outward from that point in all directions.
Detailed explanation-4: -The point where an earthquake originates is called the seismic focus. It is also known as hypocenter.
Detailed explanation-5: -The location below the earth’s surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter.