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Agents Of Erosion
Test Description: Agents of Erosion / Soil erosion
Instructions: Answer all questions to get your test result.
1) Which of these is NOT an agent of erosion?
A
Gravity
B
Ice
C
Wind
D
Magma
2) A LANDSLIDE or debris slide is a
A
rapid downhill movement of water, sediment, and soil
B
really cool, natural outdoor slide
C
slow, gradual, downhill movement of rocks and sediment
D
sudden downhill movement of a large amount of dry, loose rocks and soil
3) A MUDSLIDE is a
A
really messy slide made of dirt and water
B
solid mass of rocks and soil that travels downhill a short distance
C
sudden downhill movement of a large amount of dry, loose rocks and soil
D
rapid downhill movement of water, sediment, and soil; usually caused by heavy rain
4) A SLUMP is a
A
rapid downhill movement of water, sediment, and soil
B
person walking with poor posture
C
solid mass of rocks and soil that travels downhill a short distance
D
sudden downhill movement of a large amount of dry, loose rocks and soil
5) CREEP is
A
something babies do
B
a rapid downhill movement of water, sediment, and soil
C
a slow, gradual downhill movement of rocks and sediment
D
a sudden downhill movement of a large amount of dry, loose rocks and soil
6) SPLASH EROSION happens when
A
people splash water onto the sand at the beach
B
flowing water carries away material holding a riverbank together
C
fast-moving water carries sediment away
D
the impact from a raindrop moves a small piece of sediment
7) SHEET EROSION happens when
A
bedsheets start to fray around the edges
B
fast-moving water flows in a concentrated path and forms channels
C
the impact from a raindrop moves a small piece of sediment
D
water flows uniformly over a wide area and removes an even amount of sediment
8) RILLS and GULLIES form when
A
fast-moving water flows in a concentrated path and forms channels
B
the impact from a raindrop moves a small piece of sediment
C
water flows uniformly over a wide area and removes an even amount of sediment
D
flowing water carries away material holding a riverbank together
9) STREAMBANK 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
the impact from a raindrop moves a small pieces of sediment
D
flowing water carries away material holding a riverbank together
10) ICE EROSION happens when
A
water gets into cracks in rocks and freezes
B
ships crash into icebergs
C
ice cubes knock against each other and break off small pieces
D
massive sheets of ice pick-up and transport sediment and rocks
11) WIND EROSION happens when
A
people get out of breath from exercising
B
wind gusts pick-up sediment and transport it in the air
C
strong winds blow down trees
D
high-energy waves carry sediment away from the shore
12) WAVE EROSION happens when
A
wind gusts pick-up sediment and transport it in the air
B
large numbers of people waving cause sediment to move
C
high-energy waves carry sediment away from the shore
D
motorboats disrupt the natural motion of the waves
13) Which of the conditions below would cause the MOST erosion and run-off?
A
light rainfall on a gentle slope with no vegetation
B
heavy rainfall on a steep slope with no vegetation
C
heavy rainfall on a gentle slope with vegetation
D
light rainfall on a steep slope with vegetation
14) 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
light rainfall on a gentle slope with no vegetation
C
heavy rainfall on a steep slope with no vegetation
D
heavy rainfall on a gentle slope with vegetation
15) TRUE / FALSE: A hillside WITH vegetation will have less erosion and run-off than a hillside WITHOUT vegetation.
A
False
B
True
*select an answer for all questions
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