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earthqaukes #2
second set of earthqauke flashcards
Question | Answer |
---|---|
tension | is stress that pulls and stretches rock. makes rocks thinner in the middle. tension happens when two plates move apart. |
compression | stress that squeezes rocks. makes rocks fold or break. happens when two plates push together. |
shearing | stress that pushes rocks in opposite directions. makes rocks break, slip apart, or change shape. happens when two plates slip past eachother in opposite directions. |
stress | when earths plates move rocks are pushed and pulled. |
earhtqauke | is the shaking that results when rocks move inside earth. an earthqauke is caused by stress along a fault. stress increases until the rocks break and realese stored energy. |
focus | the place where rocks break and cause an earthqauke is called focus. |
epicenter | the point on the surface directly above the focus is called the epicenter. |