Soil, Rocks and Minerals

📚 Key Concepts

🔹 Soil Formation

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Soil is formed by breakdown of rocks over thousands of years due to:

  • Sun’s heat and cold
  • Water action (rain, rivers)
  • Wind erosion
  • Living organisms

🔹 Importance of Soil

Uses:

  • Agriculture – Growing crops
  • Construction – Making bricks
  • Habitat – Home for organisms
  • Water storage – Holds groundwater

🔹 Rocks and Minerals

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Common Rocks:

  • Granite – Buildings, monuments
  • Sandstone – Construction
  • Marble – Decoration, sculptures
  • Slate – Roofing
  • Laterite – Building bricks

Important Minerals:

  • Gold, Silver – Jewelry
  • Copper – Electrical wires
  • Iron – Steel production
  • Aluminum – Aircraft, utensils