Electricity and Magnetism Review 2013

Magnetic Force __________________ 1. A student wraps a wire around an iron nail. The student then connects the wire to a battery. The nail attracts another nail and they stick together.   What force holds the two nails together? Magnetic Force __________________

2. Electric current can only flow through a circuit that is… ___________________ Closed

3. In an incandescent light bulb, electricity passes through the bulb causing the following …   A. Electrical energy is transferred to light energy which is transferred to heat energy B. Electrical energy is transferred to heat energy which is transferred to light energy C. Electrical energy is transferred to magnetic energy D. Electrical energy is transferred to ultraviolet light The correct answer is… B

4. Which part of an atom has a negative charge? _________________ An electron

5. These two magnets will attract each other because … Opposites attract _________________________

6. When a battery, wire and nail are connected together, we create An electromagnet _______________________

7. What is created in a generator when a coil of wires is passed through a magnetic field? Electricity ____________________________________

8. An electromagnet is an example of which type of magnet? Temporary Magnet _______________________

9. Name 3 examples of good conductors Examples are nails, metal spoons, and copper ________________________

10. Name 3 examples of insulators that were shared in class. Rubber, plastic, and wood

11. Which type of power plant generates electricity by water causing a generator to turn? Hydro – Electric Power Plant

12. Which place would be a safest during an electrical storm? A. In a swimming pool B. In a building C. In the shower D. In an open field

13. An object gains a negative electric charge when …… gains an electron

14. Which electric circuit produces light? A C B D

15. Which of the following is an example of electric discharge? A. Magnets moving a Compass B. Heat escaping from a filament C. Current in a wire D. Lightning striking the ground

16. Name the 3 main parts of an atom Protron Neutron Electron

17. What is the only part of an atom that can be transferred or “hop” to another atom? Electron

18. Which type of electrical power plant would pollute the least? Petroleum Burning Geothermal Natural Gas Coal Plant

19. Describe an open circuit. An open circuit will not allow electricity to pass though it. It is not complete circuit.

20. What are the charges of an electron, a proton and a neutron? An electron has a negative charge An proton has a positive charge A neutron has NO charge. It is neutral

21. Draw a closed circuit diagram that includes a battery, a bulb, a switch, and the wires. The circuit must light the bulb. Use arrows to show the path of the electrons in the circuit.