WorksheetsWeathering and Soil Formation
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
The A soil horizon contains
a)
humus
b)
leached materials and little to no humus
c)
partially weathered parent rock
2.
The process by which minerals in soil are removed or washed away is called
a)
carbonation.
b)
leaching.
c)
fertilizing.
d)
hydrolysis.
3.
Exposure to rain and oxygen causes the metal minerals in rocks to rust and fall apart. This is an example of
a)
mechanical weathering.
b)
oxidation.
c)
erosion.
d)
a sinkhole.
4.
This farming technique helps prevent erosion from heavy rains on steep hills.
a)
contour plowing
b)
no-till farming
c)
cover crop
d)
terracing
5.
Granite has only recently been exposed at a location on Earth's surface. How will this most likely affect the soil that will eventually form at this location?
a)
The soil will have a thick layer of humus in the A horizon.
b)
The soil will contain many of the same minerals as the granite has.
c)
The soil will consist of thin horizons compared to other types of soils.
d)
the soil will be made of mostly rock material instead of organic matter.
6.
What is the first step of soil formation?
a)
humus decomposing
b)
nitrates being absorbed by the plant roots
c)
weathering of parent rock
d)
climate changing
7.
Which of the following is the most important soil formation factor
a)
Time
b)
Climate
c)
Slope
d)
Organisms
8.
Which of the following is NOT one of the three types of soil?
a)
clay
b)
sand
c)
silt
d)
mud
9.
Plants and animals are bad for soil.
a)
true
b)
false
10.
The process that breaks down rocks and other materials on Earth's surface is called
a)
weathering
b)
erosion
c)
soil conservation
d)
decomposition
11.
Soil formation begins with the weathering of
a)
litter.
b)
bedrock.
c)
the A horizon.
d)
humus.
12.
These rocks were made smooth by wind blowing smaller rock particles across their surface. This is an example of:
a)
ice wedging
b)
chemical weathering
c)
acid rain
d)
abrasion
13.
The formation of stalactites and stalagmites in a cave as water mixed with carbon dioxide creates carbonic acid, which dissolves away the limestone, is an example of
a)
mechanical weathering.
b)
chemical weathering.
c)
sinkholes.
d)
physical weathering.
14.
A cliff formed near the ocean.
Which statement best describes how this cliff formed?
Which statement best describes how this cliff formed?
a)
Warm air melted the rock.
b)
Sun rays evaporated the rock.
c)
Ocean waves washed away rock.
d)
Plant roots pushed away the rock.
15.
Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:
a)
mechanical weathering
b)
chemical weathering
c)
erosion
d)
deposition
16.
Chemical weathering does not change the mineral composition of the weathered rock.
a)
True
b)
False
17.
Helps prevent erosion from heavy rains on smaller hills.
a)
terracing
b)
no-till farming
c)
cover crop
d)
contour plowing
18.
The organic material in soil is
a)
humus.
b)
bedrock.
c)
fertilizer.
d)
feldspar.
19.
What is the layer of soil that contains humus, leaf litter, and other organic matter?
a)
O - Organic
b)
A - Topsoil
c)
B - Subsoil
d)
R - Bedrock
20.
The C soil horizon contains
a)
humus
b)
leached materials and little to no humus
c)
partially weathered parent rock
100 %
