Year 9: Using Resources

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Across
  1. 2. a reaction where a more reactive metal replaces a less reactive one
  2. 4. assessment, a method used to check environmental impact of a product
  3. 8. harmful substances released into the environment
  4. 9. meeting our needs without harming future generations
  5. 11. series, a list showing how reactive metals are
  6. 12. a composite made from cement, sand, and aggregate
  7. 14. water that is safe to drink
  8. 15. a resource that can be replaced naturally
  9. 16. removing large, solid particles from water
  10. 17. removing salt from water
Down
  1. 1. burying waste in the ground
  2. 3. a material made from two or more different materials
  3. 5. a resource that will eventually run out
  4. 6. adding chlorine to kill microorganisms
  5. 7. a method of making pure water
  6. 9. waste water
  7. 10. letting solids settle at the bottom
  8. 13. hard materials made by heating clay, often brittle
  9. 15. reusing materials to reduce waste and energy use