Name: _____________________________ Date: ________ Score: _____
Soil Experiment 3: Particles in Soil Horizon
You have learned that a soil profile has 5 major soil horizons: O, A, B, C
and R. In this activity, you will find out how the particles of soil look like.
The soil samples you will be using are taken at different soil “depths”
(how deep from the O layer) from AMICUS.
A. Question: How does the size of soil particles change as you go from
one soil horizon to another?
B. Materials per group: soil sample set, stereoscope
C. Methods/ Procedures: Read pages 106 to 107 of your textbook and
follow the steps described in those pages. Then, write the steps in
English below.
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D. Results: Complete the table below.
Soil Depth
(in meters)
1.15
Particles Drawing
2.15
3.15
4.15
5.15
6.15
7.15
8.15
9.15
10.15
11.15
12.15
13.15
What did you notice about the size of the particles as the depth of the
soil increases? (Write in 3 full sentences)
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