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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
Magma
C
Wind
D
Ice
2) A LANDSLIDE or debris slide is a
A
rapid downhill movement of water, sediment, and soil
B
slow, gradual, downhill movement of rocks and sediment
C
sudden downhill movement of a large amount of dry, loose rocks and soil
D
really cool, natural outdoor slide
3) A MUDSLIDE is a
A
sudden downhill movement of a large amount of dry, loose rocks and soil
B
really messy slide made of dirt and water
C
rapid downhill movement of water, sediment, and soil; usually caused by heavy rain
D
solid mass of rocks and soil that travels downhill a short distance
4) A SLUMP is a
A
rapid downhill movement of water, sediment, and soil
B
sudden downhill movement of a large amount of dry, loose rocks and soil
C
solid mass of rocks and soil that travels downhill a short distance
D
person walking with poor posture
5) CREEP is
A
a sudden downhill movement of a large amount of dry, loose rocks and soil
B
something babies do
C
a slow, gradual downhill movement of rocks and sediment
D
a rapid downhill movement of water, sediment, and soil
6) SPLASH EROSION happens when
A
the impact from a raindrop moves a small piece of sediment
B
fast-moving water carries sediment away
C
flowing water carries away material holding a riverbank together
D
people splash water onto the sand at the beach
7) SHEET EROSION happens 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
bedsheets start to fray around the edges
D
fast-moving water flows in a concentrated path and forms channels
8) RILLS and GULLIES form when
A
water flows uniformly over a wide area and removes an even amount of sediment
B
flowing water carries away material holding a riverbank together
C
fast-moving water flows in a concentrated path and forms channels
D
the impact from a raindrop moves a small piece of sediment
9) 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
10) ICE EROSION happens when
A
massive sheets of ice pick-up and transport sediment and rocks
B
water gets into cracks in rocks and freezes
C
ships crash into icebergs
D
ice cubes knock against each other and break off small pieces
11) WIND EROSION happens when
A
wind gusts pick-up sediment and transport it in the air
B
high-energy waves carry sediment away from the shore
C
strong winds blow down trees
D
people get out of breath from exercising
12) WAVE EROSION happens when
A
high-energy waves carry sediment away from the shore
B
large numbers of people waving cause sediment to move
C
motorboats disrupt the natural motion of the waves
D
wind gusts pick-up sediment and transport it in the air
13) Which of the conditions below would cause the MOST erosion and run-off?
A
light rainfall on a steep slope with vegetation
B
heavy rainfall on a gentle slope with vegetation
C
light rainfall on a gentle slope with no vegetation
D
heavy rainfall on a steep slope with no vegetation
14) Which of the conditions below would cause the LEAST amount of erosion and run-off?
A
heavy rainfall on a steep slope with no vegetation
B
heavy rainfall on a gentle slope with vegetation
C
light rainfall on a gentle slope with no vegetation
D
light 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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