Soil Horizons

Soil Horizons

ALEF 154

Open Ended

Observe!

What differences do you notice between the layers?

I can:

• Distinguish between different soil layers

Soil Horizons

• Horizon = Layers

• Observe well ...Prepre yourself for the next activity to arrange the layers

Review

LMS Video > ALEF 154 4th slide

Pop Check

4 questions

30 seconds/each

Multiple Choice

Tha...............contains the most nutrients in the form of humus.

• Topsoil -Horizon A

• Subsoil -Horizon B

• Parent Rock-Horizon C

• Bedrock

Multiple Choice

This layer is often made up of many small rock particles, clay, and less humus than horizon A.

• Topsoil -Horizon A

• Subsoil -Horizon B

• Parent Rock-Horizon C

• Bedrock

Multiple Choice

Below horizon C lies unweathered, solid rocks

• Topsoil -Horizon A

• Subsoil -Horizon B

• Parent Rock-Horizon C

• Bedrock

Multiple Choice

contains larger pieces of partly weathered rocks

• Topsoil -Horizon A

• Subsoil -Horizon B

• Parent Rock-Horizon C

• Bedrock

Types of Soils

How are these soils different?

What about soil in UAE?

Multiple Choice

Which soil is mostly found in UAE?

Multiple Choice

Desert has more humus.

Remember:

Humus add nutrients to the soil. It is the decayed organic matter

Multiple Choice

Which of the following might be the soil of the Desert soil?

Multiple Choice

Forests have a constant supply of fallen leaves and many organisms living on the forest floor.

Desert soils have fewer organisms, but high mineral content from weathered rocks. These differences determine the types of plants and animals found in these areas.

Based on the information above, which area will have topsoil that contains more humus?

• Forest

• Desert

• both of them

Take notes

Let's Wrap it up

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