SBSK+2.1

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Vocabulary

 * earthquake**-the shaking of the Earth
 * stress**-force that changes a rock's formation
 * shearing**-stress that sends giant chunks of rock in opposite paths
 * tension**-stress that stretches rock so much that it causes the middle to become skinnier than before.
 * compression**-stress that pushes rock together until it folds or cracks
 * deformation**-physical change in the Earth's crust
 * fault**- crack in the Earth's crust where mounds of rock pass each other
 * strike-slip fault**-type of fault where rock on either side move past each other sideways with an up-or-down motion
 * normal fault**-the Hanging wall is faced downward, while the footwall is upward
 * reverse fault**-type of fault where the hanging wall comes upward
 * hanging wall**-upper half of fault
 * footwall**-forms lower half of fault
 * fold**-caused by bends in the part of Earth's crust when compression pushes the rock together
 * anticline**-causes the rock to bend upward,forming an arch
 * syncline**-a fold at the bottom of the rock,creating a "U" shaped structure
 * plateau**-flat land that is located high above sea level

Stress in the crust

 * Earthquake
 * shaking and trembling of the earth's surface
 * stress
 * force that changes rock's formation

Types of Stress

 * Shearing
 * causes rock to break or change formation
 * Tension
 * makes rock thin in the middle by stretching the rock
 * Compression
 * squeezes rock together until it folds or breaks
 * Deformation
 * change in volume or shape of the earth's crust

Kinds of Faults

 * shearing causes strike-slip faults
 * Strike-Slip Faults
 * fault where both sides of rock slip past each other with an up/down motion
 * tension causes normal faults
 * Normal Faults
 * fault where the hanging wall lies above the footwall
 * fault is at an angle
 * compression causes reverse faults
 * Reverse Fault
 * fault where footwall lies above the hanging wall

Friction Along Faults

 * friction
 * friction is a force that opposes one rock as it moves on another

Mountain building

 * plate movement can build up Earth's surface
 * Mountain Formed by Faulting
 * Fault Block Mountain
 * tension force makes lots of normal faults
 * when two normal faults are parallel,one block is in between
 * when block in between slides upward, a valley forms
 * Mountains Formed by Folding
 * Sometimes,plate movement causes crust to fold
 * when compression stresses rock,it can cause folding of the crust
 * Antyclines and Synclines
 * when compression has folded the rock,anticlines and synclines can be revealed
 * Plateaus
 * some are formed when verticle faults push up a flat block of rock
 * has lots of different layers,contains more width than height due to layers

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