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Weathering, Soil And Mass Movements
Test Description: Weathering, Soil and Mass movements
Instructions: Answer all questions to get your test result.
1) The process that occurs when physical forces break rock into smaller pieces without changing the rock\\\'s chemical composition is called ____.
A
chemical
B
differential
C
mechanical
D
erosion
2) Which of the following is NOT associated with mechanical weathering?
A
biological activity
B
frost wedging
C
abrasion
D
reactions with oxygen
3) What kind of material is found in the A horizon of a soil profile?
A
mineral and organic matter
B
parent material (bedrock)
C
partially weathered parent material
D
clay
4) What is the force behind mass movements?
A
flowing water
B
gravity
C
sun's energy
D
moving ice
5) Which of the following would transmit the least amount of water due to tiny pore spaces between the sediment?
A
clay
B
silt
C
gravel
D
sand
6) The rate of soil erosion depends on ____.
A
type of vegetation
B
all of these
C
slope steepness
D
climate
7) In which of the following areas will soil formation be greatest?
A
a flat area in a cold, wet climate
B
a flat area in a warm, wet climate
C
a steep slope in a warm, wet climate
D
a north-facing area on a steep slope
8) Which of the following human activities has caused an increase in soil erosion?
A
clear-cut logging
B
clearing land for construction
C
plowing land for farming
D
all of these
9) Why can the removal of vegetation trigger mass movements?
A
The soil loses nutrients and begins to crumble.
B
The shaking triggers mass movements.
C
The plant roots bind and anchor the soil.
D
The plant roots lubricate the loose sediment.
10) During what season would you expect mass movements to be a greater threat?
A
a wet spring with lots of growing vegetation
B
a dry summer
C
a wet spring before vegetation is growing
D
a dry autumn after the leaves have turned
*select an answer for all questions
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