Across
- 1. common name iron oxide - produced when iron corrodes
- 3. passing an electrical current into liquid to separate chemical compounds
- 6. cutting device, often metal with a sharp or toothed edge
- 9. lime-based powder mixed with water to make concrete
- 12. signal transmission without a physical connection by wire
- 15. protective layer to prevent or reduce conduction of heat or electricity
- 16. thin layer of material, often acting as a barrier, e.g. to prevent water passing
- 17. (drive belt) closed band placed around two or more wheels
- 21. related to vehicle design and manulacturing
- 24. individual part of an assembly/mechanism
- 25. the resistance of an obtect to acceleration
- 26. wheels with cogs (teeth)
- 27. hole causing a leak of air or liquid, e.g. in a tyre
- 28. coated with zinc
Down
- 2. power energy from sunlight converted into electrical energy
- 4. used/recoveredm aterial intendedf or recycling
- 5. base of a vehicle to which all main components are fixed
- 7. Electrical generated magenetic field
- 8. energy energy in the form of movement, e.g. a spinning wheel
- 10. load force exerted on a structure by the wind
- 11. rope made of many wires, usually metal
- 13. engineer engineer specialising in the design of structures, e.g. bridges
- 14. alternative term for pulley
- 16. down change a solid substance into a liquid by heating it
- 18. mechanism containing balls or rollers
- 19. system for evacuating smoke or gases, e.g. from an engine
- 20. device with spinning blades used to push boats
- 22. control system used to control a device or vehicle from a distance
- 23. base supporting a building or structure, usually made of concrete