Mining Vocabulary

2. a closed path through which an electric current can flow
6. a group of two or more atoms
7. a unit of measure of the rate of electron flow or current in an electrical conductor
9. an electrical component that limits the flow of current
12. firing of explosives
14. a good conductor of heat and electricity
16. solid material from which a metal or valuable mineral can be extracted profitably
18. a black or brownish-black sedimentary rock that can be burned for fuel

1. a large tool consisting of a curved, pointed piece of metal with a long handle joined to the middle
2. a substance or material that allows electricity to flow through it
3. a chemical element with the symbol Ag
4. an inorganic solid substance
5. electrical unit of voltage
8. process of extracting useful minerals from the surface of the Earth
10. a tool used for digging, lifting, and moving bulk materials
11. it occurs when a circuit is broken
13. a low-resistance connection between two conductors
15. a standard unit of electrical resistance
17. smallest unit into which matter can be divided