Agents Of Erosion Question Preview (ID: 58905)
Agents Of Erosion / Soil Erosion.
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Which of these is NOT an agent of erosion?
a) Gravity
b) Ice
c) Wind
d) Magma
A LANDSLIDE or debris slide is a
a) slow, gradual, downhill movement of rocks and sediment
b) sudden downhill movement of a large amount of dry, loose rocks and soil
c) really cool, natural outdoor slide
d) rapid downhill movement of water, sediment, and soil
A MUDSLIDE is a
a) solid mass of rocks and soil that travels downhill a short distance
b) sudden downhill movement of a large amount of dry, loose rocks and soil
c) rapid downhill movement of water, sediment, and soil; usually caused by heavy rain
d) really messy slide made of dirt and water
A SLUMP is a
a) solid mass of rocks and soil that travels downhill a short distance
b) person walking with poor posture
c) rapid downhill movement of water, sediment, and soil
d) sudden downhill movement of a large amount of dry, loose rocks and soil
CREEP is
a) a rapid downhill movement of water, sediment, and soil
b) a slow, gradual downhill movement of rocks and sediment
c) a sudden downhill movement of a large amount of dry, loose rocks and soil
d) something babies do
SPLASH EROSION happens when
a) people splash water onto the sand at the beach
b) the impact from a raindrop moves a small piece of sediment
c) fast-moving water carries sediment away
d) flowing water carries away material holding a riverbank together
SHEET EROSION happens when
a) water flows uniformly over a wide area and removes an even amount of sediment
b) fast-moving water flows in a concentrated path and forms channels
c) bedsheets start to fray around the edges
d) the impact from a raindrop moves a small piece of sediment
RILLS and GULLIES form when
a) water flows uniformly over a wide area and removes an even amount of sediment
b) the impact from a raindrop moves a small piece of sediment
c) fast-moving water flows in a concentrated path and forms channels
d) flowing water carries away material holding a riverbank together
STREAMBANK EROSION happens when
a) flowing water carries away material holding a riverbank together
b) water flows uniformly over a wide area and removes an even amount of sediment
c) fast-moving water flows in a concentrated path and forms channels
d) the impact from a raindrop moves a small pieces of sediment
ICE EROSION happens when
a) ice cubes knock against each other and break off small pieces
b) massive sheets of ice pick-up and transport sediment and rocks
c) ships crash into icebergs
d) water gets into cracks in rocks and freezes
WIND EROSION happens when
a) strong winds blow down trees
b) wind gusts pick-up sediment and transport it in the air
c) high-energy waves carry sediment away from the shore
d) people get out of breath from exercising
WAVE EROSION happens when
a) motorboats disrupt the natural motion of the waves
b) high-energy waves carry sediment away from the shore
c) wind gusts pick-up sediment and transport it in the air
d) large numbers of people waving cause sediment to move
Which of the conditions below would cause the MOST erosion and run-off?
a) heavy rainfall on a steep slope with no vegetation
b) light rainfall on a gentle slope with no vegetation
c) heavy rainfall on a gentle slope with vegetation
d) light rainfall on a steep slope with vegetation
Which of the conditions below would cause the LEAST amount of erosion and run-off?
a) light rainfall on a gentle slope with vegetation
b) heavy rainfall on a steep slope with no vegetation
c) light rainfall on a gentle slope with no vegetation
d) heavy rainfall on a gentle slope with vegetation
TRUE / FALSE: A hillside WITH vegetation will have less erosion and run-off than a hillside WITHOUT vegetation.
a) True
b) False
c)
d)
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