The image shows an educational worksheet from
Homeschool Share focused on teaching about
soil layers. The task is to label the different layers of soil in a diagram.
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🌱 Understanding Soil Layers
Soil is made up of several distinct layers, called
horizons, which are stacked vertically. These layers form the
soil profile and vary in composition, texture, and color.
Here are the
five main soil layers, from top to bottom:
1.
Organic Layer (O Horizon)
- Composed of decaying plant and animal matter (like leaves, roots, and dead organisms).
- This layer is rich in organic material and supports decomposition.
2.
Topsoil (A Horizon)
- The uppermost mineral soil layer.
- Rich in nutrients and humus (decayed organic matter), making it ideal for plant growth.
- Contains many living organisms like earthworms and insects.
3.
Subsoil (B Horizon)
- Lies beneath the topsoil.
- Contains minerals leached from the topsoil, along with clay and iron.
- Often darker than the layer below due to accumulation of materials.
4.
Parent Material (C Horizon)
- Partially broken-down rock and minerals.
- This layer is where soil begins to form through weathering.
- It's less fertile and has fewer organisms.
5.
Bedrock (R Horizon)
- Solid rock that underlies all other layers.
- Not soil; it breaks down slowly into parent material over time.
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✔ Solution to the Worksheet
Looking at the diagram on the right side of the image, you need to match each labeled section of the soil profile with its correct name.
From
top to bottom, fill in the blanks as follows:
1.
Organic
2.
Topsoil
3.
Subsoil
4.
Parent Material
5.
Bedrock
> 💡 Tip: The tree's roots extend into the topsoil and subsoil, showing how plants rely on these nutrient-rich layers.
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📝 Final Answer:
Label the soil layers from top to bottom:
-
Organic
-
Topsoil
-
Subsoil
-
Parent Material
-
Bedrock
This completes the worksheet correctly!
Let me know if you'd like a printable version or further explanation! 🌍🌱
Parent Tip: Review the logic above to help your child master the concept of soil profile worksheet.