Soil Horizons Worksheet
Explore the different layers of soil with this Grade 9 science worksheet on soil horizons.
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Soil Horizons Worksheet
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Read each question carefully and answer to the best of your ability. Refer to the diagram of soil horizons as needed.
1. The uppermost layer of soil, primarily composed of organic matter, is known as the horizon.
2. The process where water carries dissolved nutrients and minerals downwards through soil layers is called .
3. The horizon is often referred to as the 'subsoil' and accumulates clay, iron, and aluminum from above.
4. Partially weathered parent material makes up the horizon.
1. Which soil horizon is characterized by a significant amount of humus and is typically dark in color?
O Horizon
A Horizon
B Horizon
C Horizon
2. Which of the following horizons is primarily composed of bedrock?
A Horizon
B Horizon
C Horizon
R Horizon
1. The O horizon is always present in every soil profile.
True
False
2. The B horizon is also known as the topsoil.
True
False
1. Briefly describe the main characteristics of the A horizon and its importance for plant life.
2. Explain the difference between illuviation and eluviation, and in which soil horizons these processes primarily occur.
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