Let’s look at the soil layers from top to bottom.
The very top layer, right under the grass and roots, is where you find decomposed leaves and organic stuff — that’s called
humus. It’s dark and rich in nutrients.
Just below humus is the layer with lots of plant roots and fine soil — this is
topsoil. It’s where most plants grow because it has good nutrients and water.
Below topsoil is a lighter-colored layer with fewer roots and more clay or sand — that’s
subsoil. It doesn’t have as many nutrients but still holds some water.
At the very bottom, you see big rocks and hard material — that’s
bedrock. It’s solid rock and nothing grows there.
Now let’s match them to the arrows:
- Top arrow (just under grass) →
humus
- Second arrow (where most roots are) →
topsoil
- Third arrow (middle layer, fewer roots) →
subsoil
- Bottom arrow (rocky layer) →
bedrock
Final Answer:
Top to bottom:
1. humus
2. topsoil
3. subsoil
4. bedrock
Parent Tip: Review the logic above to help your child master the concept of soil layers worksheet.
