11_2Warmups - Cobb Learning

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1.
2.
3.
4.
5.
The top layer of soil, or the O horizon, contains a lot of
a. Clay
b. Silt
c. Humus
d. Inorganic material
Which soil horizon has an accumulation of clay and weathered minerals from the above horizons?
a. A horizon
b. B horizon
c. C horizon
d. E Horizon
How are soils formed?
a. Weathering of rocks over a few years
b. Decayed plant and animal remains
c. Weathering of rocks over thousands to millions of years
d. A combination of B and C
When looking at a soil, which is the least (although it is very important) component?
a. Clay
b. Sand
c. Humus
d. Gravel
What horizon is leached of nutrients and light in color?
a. A horizon
b. B horizon
c. C horizon
d. E horizon
1. The top layer of soil, or the O horizon, contains a lot of
a. Clay
b. Silt
c. Humus
d. Inorganic material
2. Which soil horizon has an accumulation of clay and weathered minerals from the above horizons?
a. A horizon
b. B horizon
c. C horizon
d. E Horizon
3. How are soils formed?
a. Weathering of rocks over a few years
b. Decayed plant and animal remains
c. Weathering of rocks over thousands to millions of years
d. A combination of B and C
4. When looking at a soil, which is the least (although it is very important) component?
a. Clay
b. Sand
c. Humus
d. Gravel
5. What horizon is leached of nutrients and light in color?
a. A horizon
b. B horizon
c. C horizon
d. E horizon
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