Earthquakes By C And J
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Earthquakes By C And J

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  • Good educational slides. It is very important that one knows how earthquakes happen, and again it is also very important that one knows the ways they can protect themselves and their family members.
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Earthquakes By C And J Earthquakes By C And J Presentation Transcript

  • Earthquakes By Josh and Cody
  • How they happen
    • 1 . They form when plates move apart.
    • 2. It depends how far the plates move apart to how powerful the earthquake will be.
  • Faults
    • Normal faults cause tension in the earth’s crust pulls rock apart.
    • Reverse faults are places in the rocks crust that are pushed together
    • Strike slip fault is a fault that when plates move past each other and start shearing
    • Sorry I cant fit a picture =[
  • Stress
    • Tension stress is a stress that pulls on the crust
    • Compression stress is stress that squeezes rock until it folds or breaks
    • Shearing is stress that pushes a mass of rock in two opposite directions.
    • Sorry that again I cant fit a picture =[
  • Folding Earths Crust
    • Sometimes plate movement causes the crust to fold.
    • For example have you ever skidded on a rug that wrinkled as your feet pushed it across the floor? If so that’s what folding the crust is like!
  • Tension
    • Tension is a type of stress that constantly is pulling on the earth’s crust.