1. Let’s Review Electricity Unit

2. What is being used as the power source in the circuit shown below? a. battery b. light bulb c. wire d. switch

3. The picture below is an example of what type of circuit? a. a series circuit b. a simple circuit c. a complex circuit d. a parallel circuit

4. In this circuit, the wire must be made out of what? a. conductive material b. heated material c. insulator material d. magnetic material

5. When the picture below was taken, the light bulb shown above was not on. Which part of the circuit is keeping it from working? a. switch b. light bulb c. wire d. battery

6. Circuit B In the diagram below, Circuit B is an example of what? a. a simple circuit b. a complex circuit c. a parallel circuit d. a series circuit

7. A parallel circuit has more than one: a. type of current flowing through it. b. switch to stop the flow of current. c. branch where current can flow. d. power source.

8. Which of the following rules of thumbs applies to a series circuit like the one seen in "Circuit A"? a. "electrical current gets stronger as it flows through the circuit“ b. "only one path for electrical current to flow“ c. "electrical current gets weaker as it flows through the circuit“ d. "many paths for electrical current to flow"

9. Which of the following do the objects in Group B have in common? a. they are all insulators b. they are all flammable c. they are all conductors d. they are all magnetic

10. Group A The objects in Group A do not allow electricity to flow through them. This is largely because they do not have which of the following qualities? a. they are not flammable b. they are not insulators c. they are not metallic d. they are not natural products

11. Which of the following is shown by the diagram below? a. the bars on the top are not true magnets b. opposite poles attract -- like poles repel c. opposite poles repel -- like poles attract d. the bars on the bottom are not true magnets

12. Which of the following items would a bar magnet attract? a. glass rod b. frozen plastic c. heated rubber d. iron nail

13. The letters "N" and "S" on the bar magnets are used to label the magnetic poles. The "N" and "S" stand for what? a. "North" and "South“ b. "Nuclear" and Solar“ c. "Night" and "Sun“ d. "Not Strong" and "Strong"

14. Besides a refrigerator, the magnets above would also stick onto the: a. kitchen wall b. kitchen stove c. kitchen counter d. kitchen cabinet

15. What feature of the refrigerator is responsible for the magnets staying on? a. the material of the refrigerator door b. the electricity used to run the refrigerator c. the temperature inside the refrigerator d. the location of the refrigerator

16. The picture below shows current flowing through an electric wire. The arrows going in a circle around the wire represent the: a. path of the current flowing through the wire. b. increasing strength of current as it flows through the wire. c. magnetic field created by the flowing current. d. rotation of the wire that creates the current.

17. When the current stops running through the wire, the magnetic field that is created: a. will remain the same. b. will jump to the nearest metallic object. c. will increase in strength. d. will go away.

18. The picture below shows that a magnetic field is created when current runs through a wire. This is known as: a. a natural magnet. b. an electromagnet. c. a circular magnet. d. a permanent magnet.