Across
- 3. an alloy (a mixture of metals and sometimes other chemical elements) that consists of about 80 percent nickel and 20 percent chromium
- 5. a material that's made up of at least two different chemical elements, one of which is a metal
- 9. Heat is produced when electricity passes through metal coils. These do not give off smoke
- 11. may be described as an enclosure to contain heat. Potters use it to fire their pots and they have developed a countless number of different kiln types, each one reflecting the demands of local markets, tradition, skills and materials
- 12. unglazed red ware
- 14. Inside the glass bulb, there's a very thin coil of wire called a
- 15. poor carriers of electricity
- 17. electric sound-making machines
- 18. stored up energy waiting to be used
- 20. a longer version of saying "heat"
Down
- 1. – Heat comes from the burning of wood, coal, oil, propane, natural gas,etc
- 2. lamps (ones that make light by making heat) are getting something of a bad press these days because they waste so much energy, but they've long been considered among the greatest inventions of all time and a burning-bright light bulb is still widely used as the symbol of a great idea
- 4. will stop about one ton of carbon dioxide from entering the atmosphere and pay for itself many times over
- 6. travels at 186,000 miles (300,000 km) per second
- 7. the oldest type of kiln, dating back to 10,000 years
- 8. means movement and, generally, when stored energy is being used up, it is making things move or happen
- 10. good carriers of electricity
- 13. are necessary to remove harmful fumes
- 16. the ease with which something will let electricity flow through it
- 19. a metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion.