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Chapter 6 Test
Test Description: Intro to soil
Instructions: Answer all questions to get your test result.
1) Ice wedging causes mechanical weathering of rock by means of
A
plant growth
B
heating and cooling
C
animal actions
D
freezing and thawing of water
2) What kind of weathering causes the mineral composition of rocks to change?
A
general weathering
B
Permeable weathering
C
Mechanical Weathering
D
chemical weathering
3) A hot wet climate causes weathering to take place
A
unevenly
B
at the sam rate as a clool dry one
C
fast
D
slowly
4) The most important factors in determining the rate of weathering are
A
abrasion and acid from plant roots
B
rock type and climate
C
carbon dioxide and acid rain
D
animal actions and oxygen
5) What term describes the management of soil to prevent its distruction?
A
soil decomposition
B
soil fertility
C
soil conservation
D
soil exhaustion
6) Most of the work of mixing humus within the soil is done by
A
bacteria
B
ants
C
earthworms
D
fungi
7) In which soil layer would you find loam that is rich in humus?
A
Bedrock
B
B
C
C
D
A
8) The grological principle stating that the same processes that that operate today also operated in the past
A
Mechanical weathering
B
chemical weathering
C
uniformitarianism
D
soil conservation
9) Living organisms in soil help to
A
Mix the soil and make humus
B
prevent the formation of humus
C
slow the rate of soil formation
D
build up the C horizon
10) What is the process that breaks down rock?
A
Acid rain
B
Weathering
C
soil conservation
D
Erosion
*select an answer for all questions
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