Soil Horizons Quiz
Authored by Marisa Hicks
Other
9th - 12th Grade
Used 4+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which soil horizon is made up of fresh and partially decomposed organic material such as leaves and twigs?
A horizon
B horizon
O horizon
C horizon
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which horizon is known as “topsoil” and contains the most nutrients and biological activity?
O horizon
A horizon
B horizon
C horizon
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What gives the A horizon its dark color?
Clay
Organic matter (humus)
Iron oxides
Sand
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which horizon is often called the subsoil and is where minerals like clay and iron accumulate?
A horizon
B horizon
C horizon
R horizon
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which horizon is made of partly weathered rock that is the source of mineral particles?
C horizon
A horizon
O horizon
B horizon
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which horizon is solid, unweathered bedrock?
R horizon
B horizon
C horizon
O horizon
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
True or False: The O horizon contains no mineral material.
True
False
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