DAJB+2.1

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Vocabulary

 * Earthquake:** Shaking and trembling that is caused by the movement of rock under the Earth's surface.


 * Stress:** Forces that works on rock to change its shape and volume.


 * Shearing:**Stress that pushes rock in opposite directions.


 * Tension:** A pull on the crust, that stretches rock so it becomes thinner in the middle.


 * Compression:** Squeezes rocks until They fold or break.


 * Deformation:**A change in the volume or shape of the Earth.


 * Faults:** Breaks in the earth's crust in which slabs of the Earth's crust slip past each other.


 * Strike-slip fault:**When rock on either side of a fault slip past each other with very little up and down motion.


 * **Normal fault:**This fault is at a angle that is why one block of rock lies above the fault and the other block lies below.


 * **Hanging wall:**Half of the rock that lies above a fault.


 * **Foot wall:**Half of the rock that lies below a fault.


 * Reverse fault:**Is the same as a normal fault exept that the blocks move in opposite directions.


 * fault block mountain:**When a normal fault lifts above normal ground level, a fault block mountain forms.


 * folds:**Are bends in rocks that are formed by compression.


 * Anticline:**A fold in rock that bends downwards to form a bowl like shape.


 * Syncline:**A fold in rock that bends upward to form an arch shape.


 * Plateau:**A big area of flat land that are above sea level.

Outline

 * ===**Stress in the crust**===


 * ===**Types of stress**===
 * Shearing
 * Tension
 * Compression
 * ===**Kinds of faults**===
 * Strike-slip fault
 * [[image:strike_slip_fault.JPG width="771" height="548"]]
 * Normal fault
 * [[image:normal_fault2.JPG width="592" height="419"]]
 * reverse fault
 * [[image:reverse_fault.JPG width="624" height="442"]]


 * ===friction along faults===
 * ===Mountain building===
 * [[image:mountian_building.JPG width="833" height="596"]]
 * Mountains formed by faulting


 * mountains formed by folding


 * Anticline and syncline
 * Plateaus