EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The depth of the rocks.
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The bending of the rocks.
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The arrangement of rocks.
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The roughness of the rocks.
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Detailed explanation-1: -As the two blocks move in opposite directions, friction acting on the fault resists movement and keeps the two sides from sliding. The rock strains as elastic energy is added, eventually, the strain loads the fault too much and overcomes the frictional “strength” of the fault.
Detailed explanation-2: -Five main forces and factors drive the rock cycle: pressure, temperature, water, time, and gravity. Pressure: The pressure of the Earth’s crust and mantle affects how rocks behave.
Detailed explanation-3: -Tensional stresses cause a rock to elongate, or pull apart. Shear stresses causes rocks to slip past each other.
Detailed explanation-4: -Movement of rock along a fault may occur as a continuous creep or as a series of spasmodic jumps of a few metres during a few seconds. Such jumps are separated by intervals during which stress builds up until it overcomes the frictional forces along the fault plane and causes another slip.