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Weathering, Erosion, And Soil Formation
Test Description: Weathering, Erosion, and Soil Formation
Instructions: Answer all questions to get your test result.
1) What type of mechanical weathering occurs when rock is worn away by the grinding action of other rock particles?
A
release of pressure
B
acid rain
C
abrasion
D
oxidation
2) What type of weathering breaks down rock by freezing and thawing?
A
acid rain
B
abrasion
C
ice wedging
D
root wedging
3) What kind of weathering causes the mineral composition of rocks to change?
A
chemical weathering
B
mechanical weathering
C
none of the above
D
chemical AND mechanical weathering
4) What type of climate causes the fastest weathering?
A
hot and wet
B
hot and dry
C
cold and dry
D
cold and wet
5) What important factors determine the rate at which weathering takes place?
A
the amount of exposed surface area
B
the type of rock (permable or impermeable)
C
the climate where the rock is located
D
all of the above
6) Soil formation begins with the weathering of exposed __________________.
A
sand
B
litter
C
topsoil
D
bedrock
7) When soil is high in humus it will have ______________________.
A
low fertility
B
very few living organisms
C
high fertility
D
a light color
8) When earthworms add their wastes to the soil, then die and decay in the soil, they are contributing to the formation of what?
A
humus
B
the B horizon
C
bedrock
D
litter
9) How do living organisms help the soil?
A
they add nutrients to the soil
B
all of the above
C
the mix the soil
D
they add spaces for air and water
10) What do decomposers do?
A
They weather rocks into soil
B
They add litter to the soil
C
They breakdown the remains of dead plants and animals
D
They remove nutrients from the soil
11) Why is soil an important natural resource?
A
Humans need soil for some recipes.
B
Soil has earthworms.
C
Soil has 2 horizons.
D
All living things on land depend on soil for survival.
12) Topsoil erosion is most often caused by these two things ____________________.
A
tornados and earthquakes
B
hurricanes and earthquakes
C
tsunamis and wind
D
wind and water erosion
13) What term describes the management of soil to prevent its destruction?
A
soil conservation
B
soil horizons
C
litter
D
soil erosion
14) The practice of plowing fields along the curves of a slope is called _______________.
A
all of the above
B
contour plowing
C
no till
D
conservation plowing
15) Ice wedging and root wedging are both examples of what type of weathering?
A
all of the above
B
none of the above
C
chemical weathering
D
mechanical weathering
*select an answer for all questions
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