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WorksheetsSoil
Total questions: 30
Worksheet time: 25mins
Name
Class
Date
1.
Soil formation begins with the weathering of_______.
a)
Humas
b)
Subsoil
c)
Litter
d)
Rock
2.
The layer of soil which the topsoil is found.
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
3.
The MAIN thing Decomposers do for the the soil is the following:
a)
Store moisture
b)
Burrow deep in the soil
c)
Make space for air and water
d)
Break down and digest dead organisms
4.
Decayed organic material in soil is called______.
a)
Litter
b)
Silt
c)
Humus
d)
Clay
5.
The two main factors that determine the rate of weathering are the TYPE of rock and_____.
a)
Music
b)
Climate
c)
Size of rock
d)
Weight of rock
6.
The movement of rocks and weathered materials is called_________.
a)
Chemistry
b)
Physical
c)
Weathering
d)
Erosion
7.
Which combination creates sand?
a)
Rocks and ocean waves
b)
Wind and ocean waves
c)
Long waves and wind
d)
surf and ocean waves
8.
Topsoil which contains the HUMUS is the soil layer best for growing plants.
a)
True
b)
False
9.
Which horizon is made up of partially weathered rocks?
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
10.
In which horizon is most of the HUMUS?
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
11.
In which horizon is the Bedrock
a)
Horizon A
b)
Horizon B
c)
Horizon C
d)
Horizon D or R
12.
There is an unlimited supply of fertile soil.
a)
True
b)
False
13.
Soil's one of the Earth’s most valuable resources. Everything on Earth depends on soil somehow.
a)
True
b)
False
14.
Soil layers are called horizons because...
a)
The layers are all different
b)
The layers are vertical
c)
The layers are horizontal
d)
The layers are above one another
15.
Wind blowing dirt and sand through the air is an example of...
a)
weathering
b)
erosion
16.
Water gets into the cracks of rock and freezes, causing the rock to break. What is this an example of?
a)
erosion
b)
weathering
17.
Soil is made of
a)
weathered rocks and minerals
b)
dead plants and animals
c)
air and water
d)
all of the above
18.
Which of the following is NOT one of the three types of soil?
a)
clay
b)
sand
c)
silt
d)
mud
19.
Are there minerals in soil?
a)
Yes
b)
No
20.
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
21.
Which of the following is the largest particle in soil?
a)
sand
b)
silt
c)
humus
d)
clay
22.
Which of the following best describes soil erosion?
a)
A. the breakdown of soil
b)
A. the improvement of soil
c)
A. the addition of soil
d)
A. the movement of soil by wind or water
23.
Which type of soil can hold the greatest amount of water?
a)
sand
b)
silt
c)
clay
d)
loam
24.
Many plants cannot grow in sandy soil. Why is this true?
a)
Sandy soil does not hold enough water.
b)
Air cannot pass through sandy soil.
c)
Roots cannot easily push through sandy soil.
d)
Sandy soil has too many nutrients.
25.
You dig a small hole in the soil and the next day it rains. The hole fills with water, but does not empty even after several days of dry weather. What is the soil mostly made of?
a)
clay
b)
sand
c)
humus
d)
silt
26.
Which layer of soil are these roots growing in?
a)
subsoil
b)
topsoil
27.
According to the settling tube experiment, which soil is the heaviest and fell to the bottom of the tube?
a)
clay
b)
humus
c)
sand
d)
silt
28.
What is the layer of soil just below the topsoil?
a)
soil
b)
subsoil
c)
topsoil
d)
terrace farming
29.
Which layer of soil is best for plant growth?
a)
wet soil
b)
subsoil
c)
topsoil
d)
parent material
30.
When there are not enough plants to hold topsoil in place, water and _______ carry the topsoil away, leaving the subsoil exposed
a)
sunlight
b)
birds
c)
magnetic fields
d)
wind
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