Across
- 5. system for evacuating smoke or gases, for example from an engine
- 7. using heat to change the state of a substance from solid to liquid
- 10. not dangerous
- 12. mineral from which metal is extracted
- 13. reducing speed
- 15. acting as a barrier to prevent water passing
- 17. timber from pine trees
- 19. metal added to steel to make stainless steel
- 21. force of attraction
- 23. resistance to damage from chemical substances
- 24. (n)hole causing a leak of air or liquid, for example in a tyre
- 25. an alloy of copper (Cu), zinc and, often, lead (Pb)
- 29. using a lot of energy
- 32. limited availability, rarity
- 35. resistance to tearing (a sheet of material being pulled apart)
- 37. energy in the form of movement, for example a spinning wheel
Down
- 1. material which conducts electricity
- 2. coated with zinc (Zn) to prevent rusting
- 3. a protective material which does not conduct electricity
- 4. collective term for small metal items commonly used in buildings, for example door handles
- 6. how a vehicle responds to control inputs from the driver, for example to brakes when it is driven
- 8. corrosion caused when two different types of metal are in direct contact with each other
- 9. timber from deciduous trees
- 11. a mass of small particles or fibres, mixed together
- 14. passing an electrical current through a liquid or solid in order to separate chemical compounds
- 16. related to vehicle design and manufacturing
- 18. combined materials, consists of a bulk material called a matrix, reinforced with fibres or bars
- 20. can be recycled
- 22. a mixture of metals
- 26. an alloy of copper and tin (Sn)
- 27. a stretching force
- 28. the length of time for which a person, animal or thing exists – this also describes how long mechanical components last
- 30. small quantities
- 31. when two surfaces rub together
- 33. increasing speed
- 34. covered with a very strong protective layer
- 36. waste material intended for recycling