NEW
Font size
S
M
L
XL
WorksheetsWeathering, Erosion, and Soil
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
The growth of plant roots and animal activity may result in ________________.
a)
erosion
b)
mechanical weathering
c)
chemical weathering
d)
abrasion
2.
The definition of weathering is _______________________.
a)
the carrying away of rock
b)
the leaching of rock
c)
the breaking down of rock
d)
the permeability of rock
3.
The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is called _______________.
a)
plant growth
b)
oxygen
c)
abrasion
d)
ice wedging
4.
The most important factors in determining the rate of weathering are _____________________.
a)
carbon dioxide and acid rain
b)
abrasion and acids from plant roots
c)
animal actions and oxygen
d)
rock type and climate
5.
What kind of weathering causes the mineral composition of rock to change?
a)
mechanical weathering
b)
permeable weathering
c)
chemical weathering
d)
general weathering
6.
Mechanical weathering is the removal of rock particles by gravity, wind, water, and ice.
a)
true
b)
false
7.
Which of the following is a type of mechanical weathering?
a)
abrasion
b)
plant growth
c)
freezing and thawing
d)
all of the above
8.
In the fall, Winston noticed a small crack on a boulder where he played in his backyard. The following spring, he saw that the small crack was much larger than he remembered. What most likely caused the change?
a)
gravity had caused the rock to shift
b)
acid rain had caused the crack to erode
c)
winds had caused the rock to break down
d)
water had frozen and thawed inside the rocks
9.
What is the relationship between wind erosion and plant cover?
a)
More plants means less erosion
b)
More plants means more erosion
c)
There is no relationship
d)
Less plant cover means less erosion
10.
When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?
a)
sand
b)
silt
c)
clay
d)
humus
11.
Rock samples brought back from the moon show absolutely no evidence of weathering. This is MOST LIKELY due to ______________________________.
a)
the lack of atmosphere on the moon
b)
extremely low surface temperatures on the moon
c)
lack of biological activity on the moon
d)
lack of running water on the surface of the moon
12.
What force causes all types of mass movement?
a)
convection
b)
temperature
c)
gravity
d)
compaction
13.
Which layer of soil has more dead things in it?
a)
Top Soil
b)
Sub soil
c)
Parent materials
d)
Bed rock
14.
What layer has lots of rocks?
a)
Top soil
b)
sub soil
c)
Parent materials
d)
Bed rock
15.
Humus is.....
a)
the dead parts of plants and animals in soil.
b)
A food we eat with pretzels.
c)
The tiny particles inside of soil
d)
The roots that come off of a plant and live in soil.
16.
Layers of soil are also known as:
a)
Soil Profiles
b)
Soil Horizons
c)
Soil sheets
d)
Soil cores
17.
What is plowing in curved rows that follow the shape of the land?
a)
contour plowing
b)
soil
c)
subsoil
d)
terrace farming
18.
What do you call the planting of crops on slopes, hills, or mountains in level sections?
a)
contour plowing
b)
subsoil
c)
terrace farming
d)
topsoil
19.
Substances that fill the spaces between soil particles are...
a)
water and air
b)
humus and weathered rock
c)
sand and clay
d)
moss and lichens
20.
Which of the following improves the fertility of soil by breaking down once living matter and adding oxygen to the soil.
a)
plant roots
b)
rock particles
c)
sunlight
d)
worms
Reset
