Soil_Formation_PYP5.pptx class 5- students- ib board

how soil is formed

1. Soil Formation PYP 5 - Unit of Inquiry (UOI)

2. What is Soil? Soil is the upper layer of Earth's surface where plants grow. It is made of minerals, organic matter, air, and water.

3. How is Soil Formed? Soil forms over time through: - Weathering (breaking down of rocks) - Erosion (movement of rock particles) - Decomposition (organic matter breaking down)

4. Components of Soil - Minerals - Organic Matter (Dead plants & animals) - Air - Water

5. Factors Affecting Soil Formation - Time - Climate - Organisms (Plants & Microbes) - Parent Rock (Type of rock) - Topography (Shape of the land)

6. Why is Soil Important? - Supports plant life - Provides habitat for animals & microbes - Stores water and nutrients - Helps in agriculture and construction

7. Hands-on Activity: Simulating Soil Formation Materials: - Chalk (represents rock) - Water spray (rain) - Spoon (weathering) - Paper pieces (organic matter) Steps: 1. Spray water on chalk. 2. Crush it to show breakdown. 3. Mix with paper pieces. 4. Observe how soil forms over time.

8. Fun Fact & Conclusion Did you know? It takes 500 years to form 1 inch of soil! Remember: - Soil is formed over time from rocks and organic matter. - It is essential for life on Earth. - Protect and conserve soil!