Across
- 2. a short, solid piece of metal that moves up and down inside a cylinder in an engine
- 6. a strong metal that is a mixture of iron and carbon
- 8. the standard unit for measuring pressure
- 11. the process of burning
- 13. a low weight but highly resistant material (2 words)
- 15. panel a device that changes energy from the sun into electricity (2 words)
- 16. a hard, black substance that is dug from mines and can be burned to produce heat or power
- 18. a device that spins at high speed and causes a ship to move
- 19. a tall, vertical post, used as a support in buildings
- 22. a machine that uses the energy from liquid fuel or steam to produce movement
- 23. a device like a box that moves up and down, carrying people or goods from one floor of a building to another
Down
- 1. the structures below the surface of the ground that support a building
- 3. a very tall modern building, usually in a city
- 4. an illness, injury, or condition that makes it difficult for someone to do some things that other people do
- 5. a long, thick piece of material used to support weight in a building
- 7. the vehicle used by people who are unable to walk
- 9. a metal that is made by mixing two or more metals
- 10. a force that acts in a way that often changes the shape of an object
- 11. a deterioration of metal
- 12. a curved device that a person who has lost part of a leg can attach to their body in order to be able to walk or run
- 14. a device attached to a computer, that can make a solid object from a digital model
- 17. a unit used to measure force
- 20. turbine a tall structure with blades that are blown around by the wind and produce power to make electricity (2 words)
- 21. an accident in which oil has come out of a ship and caused pollution (2 words)