NEW
Font size
S
M
L
XL
WorksheetsWeathering & Soils
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
If pieces of a rock flake off due to extreme temperature differences, it would be?
a)
erosion
b)
mechanical weathering
c)
chemical weathering
d)
transportation
2.
Chemical weathering:
a)
is unrelated to mechanical weathering
b)
can go faster when there has been mechanical weathering
c)
can go slower when there has been mechanical weathering
d)
none of these
3.
If a mineral changes to a different type it has experienced
a)
chemical weathering
b)
mechanical weathering
c)
erosion
d)
physical weathering
4.
Minerals undergo chemical weathering because
a)
they formed at different pressure and temperature
b)
they first undergo mechanical weathering
c)
they break apart by mechanical weathering
d)
water takes away some of their ions
5.
Because carbon dioxide combines with water in the atmosphere
a)
average global temperatures are rising
b)
plants thrive
c)
the atmosphere is warmer
d)
rainwater is a weak acid
6.
Topsoil is dark in color because it
a)
it is very inorganic
b)
is full of dark rocks
c)
it has lots of worms
d)
it has a large amount of organic material
7.
In the eastern U.S., high rainfall and deciduous forests have soils called?
a)
pedocal
b)
laterite
c)
pedalfers
d)
weathered soils
8.
Adding organic material to soil
a)
allows it to contain water and nutrients
b)
decreases its fertility
c)
increases its A horizon
d)
often kills existing vegetation
9.
Farmers terrace hillsides to
a)
eliminate the soil’s C horizon
b)
increase the types of crops they can grow
c)
increase the creation of soil
d)
reduce erosion
10.
Soil made from the bedrock that lies beneath it is known as
a)
eroded soil
b)
residual soil
c)
transported soil
d)
none of these
11.
Where is ice wedging an important form of mechanical weathering?
a)
in frozen ground beneath glaciers
b)
where salt enters cracks in rock
c)
where the temperature is often near freezing
d)
mountainous regions where freezing and melting can occur
12.
Abrasion describes when
a)
sediments settle in water
b)
angular fragments break off a parent rock
c)
plant roots grow into a crack
d)
rocks bump against each other
13.
What is the most important agent of chemical weathering?
a)
water
b)
carbon dioxide
c)
oxygen
d)
acid rain
14.
Chemical weathering is enhanced when
a)
carbon dissolves rock
b)
carbon dioxide creates acids in the atmosphere
c)
water breaks into ions that dissolve rock
d)
none of these
15.
The climate that produces the lowest rate of weathering is
a)
hot and wet
b)
hot and dry
c)
cold and wet
d)
cold and dry
16.
To classify types of soil, soil scientists measure the
a)
amount of humus
b)
proportions of particles of different sizes
c)
depth of the three soil horizons
d)
none of these
17.
What is the darkest layer of soil?
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
None of These
18.
For soil to be a renewable resource, it must be
a)
kept exposed to weather and other natural processes
b)
exposed to oxygen so it can undergo oxidation
c)
protected from erosion
d)
all of these
19.
Layers of soil all together are called
a)
residual soil
b)
transported soil
c)
residual soil
d)
soil profile
20.
What type of soil is found in tropical rainforests?
a)
pedocal
b)
pedalfer
c)
laterite
d)
none of these
21.
Important agents of chemical weathering include oxygen, carbon dioxide and sulfur.
a)
True
b)
False
22.
If temperature increases by 10◦C, the rate of chemical reactions will generally double.
a)
True
b)
False
23.
All rocks weather at the same rate.
a)
True
b)
False
24.
Abrasion is a type of chemical weathering.
a)
True
b)
False
25.
Water can dissolve salt.
a)
True
b)
False
26.
Flat lands develop thicker soils than steeper slopes.
a)
True
b)
False
27.
Rainforests are rich ecosystems and their soils are rich in nutrients.
a)
True
b)
False
28.
All soils contain organic material.
a)
True
b)
False
29.
Chemical erosion is most common in deserts.
a)
True
b)
False
30.
Pedocal soils form in regions covered with grasslands and brush.
a)
True
b)
False
31.
Plants increase chemical weathering by emitting water into the ground.
a)
True
b)
False
32.
If the temperature rises, the rate of chemical reactions increases by 10.
a)
True
b)
False
33.
The steeper the slope, the thicker a soil will be.
a)
True
b)
False
34.
Soil is a renewable resource.
a)
True
b)
False
35.
Soil is a complex mixture of different materials.
a)
True
b)
False
36.
Residual soils form in one place but have been transported to somewhere else.
a)
True
b)
False
37.
Water runs off soil because soil is not permeable.
a)
True
b)
False
38.
In the eastern U.S., soils are thin and nutrient-poor.
a)
True
b)
False
39.
Plowing along the contours of a field reduces soil erosion.
a)
True
b)
False
40.
Adding compost to the soil improves its fertility and its ability to hold water and nutrients.
a)
True
b)
False
Reset
