Mohammed's Technology Crossword

4. a principle or standard by which something may be judged or decided
5. a thermoplastic of high density
7. an electromotive force
9. a stable subatomic particle with a charge of negative electricity
10. a tool or machine with a rotating cutting tip or reciprocating hammer or chisel, used for making holes
11. a rough or unfinished drawing
13. a tool used to remove fine amounts of material from a workplace
16. the natural purpose (of something) or the duty (of a person)
17. a hand tool used in metal work to mark lines on work pieces
18. close-fitting glasses with side shields, for protecting the eyes from glare, dust, water, etc
22. a closed loop which electrons can travel in
23. the negatively charged electrode by which electrons enter an electrical device
24. the condition of being protected from danger or risk

1. a first or preliminary version of a device or vehicle from which other forms are developed
2. a fusible metal alloy used to bond work pieces
3. a plastic polymer which becomes more soft when heated and hard when cooled
6. a thermoplastic resin used to make beverage, food and other liquid containers, synthetic fibers, as well as for some other thermoforming applications
7. a word used to describe an action
8. a plan or drawing to show an outline of an idea.
12. an electric device that increases electrical signals
14. a protective garment worn over the front of ones clothes and tied at the back
15. a light-emitting diode
19. unit of electrical resistance
20. convert waste into a reusable material
21. the rate of flow of electric charge