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Soil Review
Test Description: To help you study for your soil test
Instructions: Answer all questions to get your test result.
1) What is NOT a characteristic of horizon O?
A
Has NO living organisms
B
Nutrients are recycled
C
Decayed plants and animals
D
Has a large amount of organisms
2) What is NOT a characteristic of horizon A?
A
Also called the subsoil level
B
Plant roots are here
C
Has living organisms
D
Also called topsoil level
3) What is NOT a characteristic of horizon B?
A
Has chunks of rock
B
All bedrock
C
Basements are built in this level
D
red or yellow in color
4) What is NOT a characteristic of horizon C?
A
Large amounts of rock
B
No or very few living organisms
C
Has living organisms
D
Foundations for buildings are built here
5) What does Leaching mean?
A
Where worms spread nutirents
B
Organic material found at the surface
C
Black bugs that tunnel through the soil
D
Where water spreads nutrients to lower horizons
6) What does the term Humus mean?
A
A dip served at restaurants
B
Where water spreads nutrients
C
Dark colored, decayed organic matter found in the top layer of soil
D
All of the soil horizons together
7) Which type of soil is best for growing crops?
A
Silt
B
Sand
C
Loam
D
Clay
8) Which type of soil has the smallest particle?
A
Gravel
B
Clay
C
Sand
D
Silt
9) Which type of soil holds water for a long time?
A
Gravel
B
Sand
C
Clay
D
Silt
10) Which type of soil does NOT hold water?
A
Loam
B
Sand
C
Silt
D
Clay
11) Which property describes how much space is in between particles and how water moves through soil?
A
Texture
B
Pore Space
C
Color
D
Chemistry
12) Which is the proper order (from smallest to largest) in terms of particle size?
A
silt, clay, gravel, sand
B
clay, silt, sand, gravel
C
clay, sand, silt, gravel
D
gravel, silt, sand, clay
13) Dark brown or black color soil often indicates:
A
A large amount of humus
B
Considerable iron oxides
C
A very young soil
D
Considerable moisture
14) What is the definition of weathering?
A
Process in which rocks are broken down
B
Process where ice breaks rock
C
Process where roots break a rock
D
Process in which broken rocks are moved
15) What is organic matter?
A
Once living things that provide nutrients for the soil
B
How easily water can move though soil
C
Hard weathered rock
D
The distance between soil particles
16) Where most of the animal waste and partially decomposed leaves are found.
A
Horizon R
B
Horizon O
C
Horizon A
D
Horizon B
*select an answer for all questions
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