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the earth is formed by tectionic plates , several plates only form part of the earth , when the plates move due to some disturbance in the earth itself , these plates move to re adjust , thus making the quakes, tremors devlop to quakes.

2007-01-11 03:43:22 · answer #1 · answered by david j 5 · 0 0

When plates move relative to each other, stresses are built up. Earthquakes happen when those stresses increase to the point that they can no longer be held by the rock and it snaps releasing the energy that was built up. When an object is still, it takes a great deal of energy to overcome the frictional forces. As two plates move relative to each other, the boundaries don't move too much because of the friction. Eventually however, the stresses become to great and they slip.

2007-01-11 12:10:47 · answer #2 · answered by JimZ 7 · 0 0

The tectonic plates are constantly moving, though at a very slow speed. Where they meet up (faults) one plate gets forced under the other, creating friction. The plates often tend to bind up, though they are still moving slowly. When theres enough force behind them, the plates snap free of where they were binding, creating the shockwave known as an earthquake.

2007-01-11 11:43:36 · answer #3 · answered by bikeboard15 2 · 0 0

Just as we have storms disturbances on the surface of earth, we have perturbations, disturbances,and sometimes upheavals in the deep bowels of earth. These manifest themselves as tectonic shifts where huge land masses move changing the geography of earth.This disturbs the mechanical or structural balance due to which there are slips and dislocations in the earth's crust leading to earthquakes.

2007-01-11 11:43:39 · answer #4 · answered by openpsychy 6 · 0 0

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