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WorksheetsUnit 4 Soil and Weathering
Total questions: 26
Worksheet time: 23mins
Name
Class
Date
1.
Which horizon has the most topsoil?
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon R
2.
Which horizon contains bedrock?
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon R
3.
Which type of soil or rock allows water to pass through it?
a)
impermeable
b)
nonporous
c)
permeable
d)
underground
4.
________ is a soil conservation method that shortens the steep slope into a series of shorter, level steps.
a)
weathering
b)
terracing
c)
no-till farming
d)
ice wedging
5.
Decayed organic material turns into a dark, nutrient rich material called?
a)
clay
b)
soil
c)
litter
d)
humus
6.
Soil is a mixture ____________.
a)
all answers are correct
b)
weathered rock and water
c)
decayed organic matter and oxygen
d)
mineral fragments
7.
How do farmers manage crops to reduce soil erosion.
a)
They plant shelter belts to protect crops from wind erosion.
b)
They practice no till farming.
c)
They use animals to graze over vegetation intead of plowing
d)
All answers are correct.
8.
One of the essential benefits of soil is that it provides
a)
Nutrients for plants
b)
good mud for mud pies
c)
keeps plants from eroding
d)
produces acid that cause acid rain
9.
Which sediment has the smallest grain size
a)
clay
b)
gravel
c)
sand
d)
silt
10.
Which sediment has the largest grain size
a)
clay
b)
gravel
c)
sand
d)
silt
11.
What are the four soil horizon:
a)
A, E, I, O
b)
O, A, E, D
c)
A, B, C, D
d)
O, A, B, C
12.
What is erosion?
a)
wind currents in the upper atmosphere
b)
a process that moves sediment
c)
mountain building
d)
ocean currents near the surface
13.
How does abrasion occur?
a)
Sediments break off a rock on their own
b)
Wind-blown sediments strike a surface
c)
Wind blows large chucks of rock off a surface
d)
Sediment is blown off a surface by the wind
14.
How does abrasion occur?
a)
Sediments break off a rock on their own
b)
Wind-blown sediments strike a surface
c)
Wind blows large chucks of rock off a surface
d)
Sediment is blown off a surface by the wind
15.
The major environmental disaster during the Great Depression years
a)
Pro Bowl
b)
Dust Bowl
c)
Bloody Sunday
d)
Dust Storm
16.
Rust is produced by the combination of
a)
iron and water
b)
tin and oxygen
c)
iron and oxygen
d)
tin and water
17.
Lichens erode rocks by producing
a)
limestone
b)
oxides
c)
salts
d)
acids
18.
After thousands of years, the softer outer parts of Devil's Tower have eroded away, leaving the harder more resistant igneous volcanic neck. This is a spectacular example of ___________.
a)
mechanical weathering
b)
chemical weathering
c)
differential weathering
d)
oxidation
19.
Which is an example of mass wasting?
a)
rock slide
b)
ice wedging
c)
acid precipitation
d)
animal burrowing
20.
Ice Wedging is an example of
a)
mechanical weathering
b)
chemical weathering
21.
Acid precipitation wearing down granite tombstone is an example of
a)
mechanical weathering
b)
Chemical weathering
22.
Gravity pulling a rock off a cliff is an example of
a)
mechanical weathering
b)
chemical weathering
23.
What is the process that occurs when minerals dissolve and sink into lower soil horizons called
a)
leaching
b)
infiltration
c)
horizons
d)
transporting
24.
The practice of leaving old stalks to provide cover from rain in order to reduce water run off and soil erosion is called
a)
terracing
b)
no till farming
c)
countour plowing
d)
cover crops
25.
The surface of old concrete statues are often covered with small hole or pits. Which of these most likely caused the holes and pits?
a)
long exposure to sunlight
b)
chemical weathering by acid rain
c)
chipped away by sand particles blown by strong winds
d)
water freezes in small cracks
26.
One of the best ways to protect topsoil is
a)
to keep plants in it
b)
to water it
c)
to add minerals to it
d)
to leave it exposed to fresh air
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