Standard III - Rocks and Soil
Standard: Students will understand the basic properties of rocks, the processes involved in the formation of soils, and the needs of plants provided by soil
Objective 1: Identify basic properties of minerals and rocks.
Objective 2: Explain how the processes of weathering and erosion change and move materials that become soil.
Objective 3: Observe the basic components of soil and relate the components to plant growth.
Earth materials include rocks, soils, water, and gases. Rock is composed of minerals. Earth materials change over time from one form to another. These changes require energy. Erosion is the movement of materials and weathering is the breakage of bedrock and larger rocks into smaller rocks and soil materials. Soil is continually being formed from weathered rock and plant remains. Soil contains many living organisms. Plants generally get water and minerals from soil.