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Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
Sarah And Shontell Folder4
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Sarah And Shontell Folder4

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  • 1. By Shontell Roberts and Sarah Keith Core 1,Science Earthquakes For Kidz
  • 2. Stress <ul><li>There are three different kinds of stress can occur in the crust- tension, compression, and shearing. </li></ul><ul><li>These forces cause some rocks to become brittle and snap. </li></ul><ul><li>Other rocks bend slowly like road tar softened by the sun. </li></ul>
  • 3. Compression <ul><li>The stress force called compression squeezes rock until it folds or breaks </li></ul><ul><li>One plate pushing against another can compress rock like a giant trash contractor. </li></ul>
  • 4. Tension <ul><li>The stress force called tension pulls on the crust, stretching, rocks so that it becomes thinner in the middle </li></ul><ul><li>The effect of tension on rock is somewhat like pulling apart a piece of warm bubblegum. </li></ul>
  • 5. Shearing <ul><li>Stress that pushes a mass or rock in to opposite direction is called shearing </li></ul><ul><li>Shearing can cause rock to break and slip apart or to change its shape. </li></ul>
  • 6. Reverse Faults <ul><li>Reverse faults are in places where the rock of the crust is pushed together compression cause’s reverse faults to form </li></ul><ul><li>A reverse fault has the same structure as a normal fault, but the blocks move in the opposite direction. </li></ul>
  • 7. Strike-Strip Fault <ul><li>In places where plates move past each other shearing creates strike-slip faults </li></ul><ul><li>In a strike-strip fault other rocks on either side of the fault slip past each other sideways with little up or down motion. </li></ul>
  • 8. Normal Faults <ul><li>Is when tension in the crust pulls the rock apart causing normal faults </li></ul><ul><li>Normal faults have a footwall and a hangwall most faults occur along boundaries. </li></ul>
  • 9. Hang wall <ul><li>The hang wall is the block of rock that lies below the footwall like a fault </li></ul><ul><li>A hang wall happens when they move away from each other </li></ul>
  • 10. Anticline <ul><li>A fold in rock that bends upward into an arch. </li></ul><ul><li>Like going up a mountain. </li></ul>
  • 11. Footwall <ul><li>When movement occurs the normal fault move downwards . </li></ul><ul><li>This happens when two pieces of earths crust are under tension. </li></ul>
  • 12. Syncline <ul><li>A fold in rock that bends down to form a valley. </li></ul><ul><li>Like going down a hill or valley. </li></ul>
  • 13. Plateau <ul><li>Plateau is a large area of flat land elevated high above sea level. </li></ul><ul><li>Flat land with mostly grass and few trees. </li></ul>
  • 14. Internet Sources <ul><li>www.madmountain.com </li></ul><ul><li>www. images. Google/pictures </li></ul><ul><li>www.collazocove.wikispaces.com/sciencelink </li></ul><ul><li>www.msn.com/images </li></ul><ul><li>www.hln-store.com </li></ul><ul><li>www.pubs.usgs.gov </li></ul><ul><li>www.geology.about.com </li></ul>

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