Please review and study Chapter 20. The test is on Friday January 23.
Some terms you need to know:
- commutator
- magnetic field
- electromagnet
- magnetic pole
- generator
- solenoid
- loadstone
- transformer
- magnetic domain
Some Short Answer/Essay Questions:
- Why does increasing the temperature of a magnet affect its magnetic field? (p.474)
- Identify one way to increase the strength of an electomagnet. (p.477)
- What would be the prime mover at a hydroelectric power plant? (p. 480)
- Where does the earth's magnetic field come from? How does it give evidence for a wise and all-powerful Creator? (p. 473)
- Name three applications of electromagnets. (p. 478-479)
- Why do electric companies use step-up transformers? Why do they us step-down transformers? (p. 482)
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