Intresting facts for earths

    snoopy1201
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    Intresting facts for earths Empty Intresting facts for earths

    Post by snoopy1201 on Thu May 28, 2009 4:36 pm

    Anyone Wonder WHy Earthquakes HAppen?

    Earthquakes are usually caused when rock underground suddenly breaks along a fault. This sudden release of energy causes the seismic waves that make the ground shake. When two blocks of rock or two plates are rubbing against each other, they stick a little. They don't just slide smoothly; the rocks catch on each other. The rocks are still pushing against each other, but not moving. After a while, the rocks break because of all the pressure that's built up. When the rocks break, the earthquake occurs. During the earthquake and afterward, the plates or blocks of rock start moving, and they continue to move until they get stuck again.

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    Puffles
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    Intresting facts for earths Empty Re: Intresting facts for earths

    Post by Puffles on Thu May 28, 2009 6:00 pm

    Earthquakes can happen anytime and anywhere because the plates are always moving towards or away from each other. Some plates move more violenting, and cause more catasorphic damage in areas where lots of people live.

    Earthquakes can occur on land or underwater. Earthquakes that occur underwater can cause tsunamis. The ancient Greek Thucydides was the first known historian to make the connection between underwater earthquakes and tsunamis.

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