Part 1: Soil Science Concepts

1. Which soil particle is the largest?

Clay

Silt

Sand

Humus

2. Which soil horizon is commonly called topsoil?

O horizon

A horizon

B horizon

C horizon

3. Which soil property describes how well soil holds and drains water?

Texture

Structure

Permeability

Color

4. Which practice helps reduce soil erosion on sloped farmland?

Removing all crop residue

Contour farming

Overgrazing pasture

Leaving soil bare

Part 2: Short Answer

5. Define soil texture and name the three major soil particles.

6. Explain why organic matter is important for agricultural soil.

7. Complete the sentence: Soil pH measures how _________ or _________ a soil is.

8. Describe one way farmers can improve soil fertility without causing excess nutrient runoff.

Part 3: Agricultural Application

9. A field has compacted soil, poor drainage, and weak crop growth. Identify one likely cause and recommend one management practice.

10. Design a simple soil conservation plan for a hillside farm. Include at least two practices and explain how each protects the soil.

10th Grade Soil Science

Soil: Building Block of Life

Part 1: Soil Science Concepts

Part 2: Short Answer

Part 3: Agricultural Application

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