gravity’s effect on erosion 2/4/15 12-4 pgs. 316-319 in: explain how glaciers cause erosion. put...
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Gravity’s Effect on Erosion Gravity’s Effect on Erosion 2/4/152/4/15
12-4 pgs. 316-31912-4 pgs. 316-319
IN: Explain how glaciers IN: Explain how glaciers cause erosion.cause erosion.
Put your blue DRW on the Put your blue DRW on the boxbox
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Alaskan Glacier
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Alaskan Glacier
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Wheeler Peak Glacier, NVWheeler Peak Glacier, NV
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What happened?What happened?
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How does gravity effect How does gravity effect erosion?erosion?
►Mass MovementMass Movement – the – the movement of any material, movement of any material, such as rock, soil, or snow, such as rock, soil, or snow, downslope.downslope.
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►Mass movement is controlled Mass movement is controlled by the force of gravity and by the force of gravity and can occur rapidly or slowly.can occur rapidly or slowly.
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Angle of ReposeAngle of Repose
►The angle of repose is the steepest The angle of repose is the steepest angle, or slope, at which loose angle, or slope, at which loose material will not slide downslope.material will not slide downslope.
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Rapid Mass MovementRapid Mass Movement
Rock FallRock Fall – a group of loose – a group of loose rocks that fall down a steep rocks that fall down a steep slope.slope.
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Boulder the size of an elephant crushes entire house and instantly kills two inhabitants in Utah landslide | Mail Online
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Rapid Mass MovementRapid Mass Movement
LandslideLandslide – a sudden and rapid – a sudden and rapid movement of a large amount movement of a large amount of material downslope.of material downslope.
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Rapid Mass MovementRapid Mass Movement
SlumpSlump – when a block of – when a block of material moves downslope .material moves downslope .
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MudflowMudflow – the rapid movement – the rapid movement of a large mass of mud/rock of a large mass of mud/rock and soil mixed with a large and soil mixed with a large amount of water that flows amount of water that flows downhill.downhill.
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Rapid Mass MovementRapid Mass Movement
LaharsLahars – mudflows of volcanic – mudflows of volcanic origin.origin.
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Slow Mass MovementSlow Mass Movement
CreepCreep – the extremely slow – the extremely slow movement of material movement of material downslope.downslope.
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OUT: What factors OUT: What factors increase the increase the potential for mass potential for mass movement?movement?