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WorksheetsSoil
Total questions: 20
Worksheet time: 19mins
Name
Class
Date
1.
How freely water will flow through the open spaces in soil is called _____.
a)
particle size
b)
permeability
c)
quality
d)
composition
2.
Soil particles that are larger than 2mm are called _____.
a)
sand
b)
silt
c)
clay
d)
gravel
3.
Soil ______ depends on the particle sizes and their relative proportions within the soil.
a)
pH
b)
mixtures
c)
texture
d)
humus
4.
The sand, silt, and clay portion of soil comes from weathered _____ material.
a)
parent
b)
bedrock
c)
plant
d)
insect
5.
The decayed organic matter in soil is _____.
a)
humus
b)
parent material
c)
silt
d)
loam
6.
Soil ____ describes what the soil is made of, what is contained within it.
a)
composition
b)
texture
c)
particle size
d)
permeability
7.
Soils form in layers, or _____.
a)
top soils
b)
mixtures
c)
horizons
d)
levels
8.
Measuring ____ involves calculating the rate of drainage.
a)
particle size
b)
permeability
c)
quality
d)
composition
9.
Most plants grow best in soils with a pH between _____.
a)
1 and 4
b)
4 and 10
c)
5 and 7
d)
6 and 12
10.
Name the soil horizon: O layer
a)
parent material
b)
organic layer
c)
subsoil
d)
topsoil
11.
Name the soil horizon: A Horizon
a)
organic layer
b)
subsoil
c)
topsoil
d)
parent material
12.
Name the soil horizon: B Horizon
a)
parent material
b)
topsoil
c)
subsoil
d)
bedrock
13.
Name the soil horizon: C Horizon
a)
topsoil
b)
bedrock
c)
subsoil
d)
parent material
14.
Name the soil horizon: R Horizon
a)
organic layer
b)
bedrock
c)
parent material
d)
subsoil
15.
Humus, some clay, and other minerals - home of most plant roots and organisms that live within the soil.
a)
topsoil
b)
subsoil
c)
organic layer
d)
parent material
16.
Lumps or more likely large shelves of weathered rock is ________.
a)
subsoil
b)
topsoil
c)
parent material
d)
bedrock
17.
Leaf litter, decomposing organic material
a)
topsoil
b)
organic layer
c)
subsoil
d)
parent material
18.
Mineral layer which may contain concentrations of clay or minerals, washed down from A horizon.
a)
Topsoil
b)
subsoil
c)
organic layer
d)
parent material
19.
Solid rock at the base of the soil profile is ______.
a)
organic layer
b)
parent material
c)
subsoil
d)
bedrock
20.
_____ is/are one of the most valuable abiotic factors in an ecosystem.
a)
plants
b)
insects
c)
community
d)
soil
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