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Soils
Test Description: PH, textures, profiles and horizons
Instructions: Answer all questions to get your test result.
1) What are the three basic soil particles?
A
sand, silt, clay
B
silt, sand, loam
C
sand, silty loam, clay loam
D
sandy loam, silt, clay
2) Which soil particle is smallest?
A
clay
B
loam
C
sand
D
silt
3) What is the largest soil particle?
A
silt
B
sand
C
clay
D
loam
4) What is considered a "perfect" soil?
A
sand
B
clay
C
silt
D
loam
5) What pH is neutral?
A
14
B
7.5
C
7
D
2.5
6) Which soil pH is considered acidic?
A
7
B
2.5
C
7.5
D
14
7) Which soil is considered basic or alkaline?
A
7
B
7.5
C
2.5
D
14
8) How is soil formed
A
Breakdown of decomposed materials
B
Breakdown of rock and mineral materials along with decomposing materials that can grow plants
C
eroded rock and minerals only
D
material that allows plant growth
9) Which is the correct order of soil horizons?
A
ABCD
B
CBA
C
ABC
D
BCA
10) Topsoil is made of
A
IDK
B
organic materials
C
organic materials and loosedly packed soil
D
loosely packed soil
*select an answer for all questions
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