WorksheetsSoil Profile (horizons - Depth of Soil)
Total questions: 20
Worksheet time: 10mins
What is horizon 1's code?
O
A
B
C
What is another name for the O horizon?
Organic
Optional
Orizon
Organism
What is horizon 2's "code"?
O
A
B
C
What is horizon 3's "code"?
O
A
B
R
What is horizon 4's "code"?
C
A
B
R
What is horizon 5's "code"?
C
A
B
R
What is another name for the A horizon?
Top Soil
Anaerobic
Subsoil
Roots
What is another name for the B horizon?
Top Soil
Bedrock
Subsoil
Base soil
What is another name for the C horizon?
Top Soil
Bedrock
Substratum
Subsoil
What is another name for the R horizon?
Top Soil
Bedrock
Subsoil
Parent Material
What is a soil profile
A vertical cross section of the soil
Layers of subsoils
The process of soil being added by organic materials
The surface layers of soil
A soil profile is usually studied to a depth of
3 to 5 feet
1 to 3 feet
5 to 7 feet
2 to 4 feet
The master horizons are which three primary soil horizons
A, B, and C
O, A, and B
A, B, C and R
O, A, B, and C
What is the O horizon composed of?
Surface litter
The solum
Clay, chemicals and organic material
The substratum
Which horizon provides the best environment for the growth of plant roots?
A
O
The Solum
B
The solum is made up of which horizons?
A, E, and B
A and E
O, B and R
E and B
What is the most common answer to depth of soil in Nebraska?
Very Deep/ Deep
Moderately Deep
Shallow
Very Shallow
How deep is moderately deep soil? (2nd on the list)
60 inches or more of unrestricted soil material
40-60 inches of unrestricted soil material
20-40 inches of unrestricted soil material
less than 10 inches of unrestricted soil material
How deep is shallow soil? (3rd on the list)
0-10 inches of unrestricted soil material
40-60 inches of unrestricted soil material
20-40 inches of unrestricted soil material
10-20 inches of unrestricted soil material
How deep is very shallow soil? (4th on the list)
60 inches or more of unrestricted soil material
40-60 inches of unrestricted soil material
20-40 inches of unrestricted soil material
0-10 inches of unrestricted soil material
