Sci.%204-4

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Sci. 4-4 Deforming the Earths Crust Page 103-109
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1. Stress- the amount of force per unit area that is
   put on a given material
2. Deformation- the change in the shape of the rock
   in response to stress

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C. Compression- squeezed together D. Tension-
being stretched
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E. Folding- rock layers bend due to stress 1)
anticline 2)synclines 3) monocline- if both
ends of a fold are still horizontal after folding
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F. Faulting- when rocks break and slide past each
other 1)footwall 2)hanging wall 3) normal
fault- the hanging wall moves down- tension
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4) Reverse fault- the hanging wall moves up-
compression 5) Strike-slip fault- occurs when
opposing forces cause rock to break and move
horizontally
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G. Mountain building is caused by plates moving
and bumping into each other
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1) folded mountains- 2 rock layers squeeze
together and push up
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2) fault-block mountains- when faulting causes
large blocks of Earths crust to drop down
relative to other blocks.
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3) Volcanic Mountains- when molten rock erupts
onto the Earths surface