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8thScElec&Mag-3-1&2
8th Grade Science Electricity & Magnetism Chapter 3 Sec. 1 & 2
| Question | Answer |
|---|---|
| electromagnetism | relationship between electricity & magnetism |
| energy | ability to move an object over a distance |
| electrical energy | energy associated with electric current |
| galvanometer | device that measures small currents |
| electromagnetic induction | generating an electric current from the motion of a conductor through a magnetic field |
| direct current | current of charges that flow in one direction |
| alternating current | current of charges that move back & forth in a circuit |
| electric generator | device that transforms mechanical energy into electrical energy |
| step up transformer or step down transformer | a transformer that increases voltage or a transformer that decreases voltage |
| solenoid | a coil of wire with a current |
| electromagnet | a solenoid with a ferromagnetic core |