EARTH SCIENCE
TECTONICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Surface rocks move suddenly as a result of physical stress.
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Rocks along an underground fault move suddenly and release energy.
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Large amounts of rock suddenly shift downward when large holes form under them.
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Energy is transferred to rock layers from convection currents in the oceans and the ocean atmosphere.
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Detailed explanation-1: -Earthquakes are caused by the sudden release of energy within some limited region of the rocks of the Earth. The energy can be released by elastic strain, gravity, chemical reactions, or even the motion of massive bodies.
Detailed explanation-2: -Earthquakes are usually caused when underground rock suddenly breaks and there is rapid motion along a fault. This sudden release of energy causes the seismic waves that make the ground shake.
Detailed explanation-3: -Earthquakes are the result of sudden movement along faults within the Earth. The movement releases stored-up ‘elastic strain’ energy in the form of seismic waves, which propagate through the Earth and cause the ground surface to shake.
Detailed explanation-4: -Prior to an earthquake, tectonic forces result in a gradual buildup of strain energy stored on either side of the fault. When the local stresses along the fault become too large, the fault slips suddenly or ruptures and releases the stored strain energy.
Detailed explanation-5: -As rocks along a fault slip into new positions, the rocks release energy in the form of vibrations called seismic waves.