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- By
- Ellen Benegar
- Suffolk Public Schools
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- Many plants grow in soil.
- Soil provides support and nutrients for the plants.
- Back to the review
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- Weathering is when weather, water and living things break down rocks and
create soil.
- Weathering takes place over many years.
Back to the review
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- Materials that plants and animals need to live and grow.
- Back to the review
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- Rock
- Clay
- Silt
- Sand
- Humus
- Back to the review
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- Topsoil is the upper surface of soil.
- It is a natural product of subsoil and bedrock.
- Topsoil is the best for plant growth.
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- Subsoil and bedrock are layers of soil under the topsoil that are formed
over a long period of time by water.
- Subsoil and bedrock aren’t as good for growing plants as topsoil.
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- Humus is decayed or dead matter in soil.
- It adds nutrients to the soil.
- Humus is found in topsoil.
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- Clay contains small particles of soil that hold water well and provides
nutrients.
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- Sand is made up of small grains of worn-down rock.
- It has few nutrients.
- Sand doesn’t hold water well.
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- Silt is composed (made up of) very small broken pieces of rock.
- Its particles are larger than clay and smaller than sand.
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- Proper use of farming
- Proper use of mining
- Proper use of cutting down of trees to avoid erosion
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- Name the 5 components of soil. Check answer here
- What are nutrients? Check answer here
- Why is soil important? Check
answer here
- What is weathering? Check
answer here
- Fill in this chart to compare 4 types of soil.
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Notes
