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现在参加这个测试
Electricity: Circuits
  • 1. Electric lights will not come on unless their electrical circuit is a:
A) plug in circuit
B) complete circuit
C) open circuit
D) short circuit
  • 2. Which of these is a good conductor?
A) glass
B) metal
C) plastic
D) rubber
  • 3. Dragging your feet across a rug and then touching a doorknob and getting shocked is a result of:
A) static electricity
B) resistance
C) magnetism
D) current electricity
  • 4. What kind of electricity is lightening?
A) negative
B) complete
C) current
D) static
  • 5. How do the electrons move in current electricity?
A) don't ever move
B) flow along a path
C) jump from one place to another
D) positively
  • 6. How do the electrons move in static electricity?
A) jump from one place to another
B) don't ever move
C) flow along a path
D) positively
  • 7. Which of these is not a conductor?
A) rubber band
B) penny
C) nail
D) fork
  • 8. Which of these is not an insulator?
A) wooden block
B) glass
C) copper wire
D) wool
  • 9. What gives a circuit power?
A) battery
B) wire
C) holders
D) bulb
  • 10. What carries the power around the circuit?
A) wire
B) bulb
C) holder
D) battery
  • 11. What shows that the power is working in a circuit?
A) battery
B) holder
C) wire
D) bulb
  • 12. What lets electricity flow through it easily?
A) proton
B) conductor
C) insulator
D) electron
  • 13. What does not allow electricity to flow through it easily?
A) insulator
B) conductor
C) electron
D) proton
  • 14. The more coils of wire around a nail, the ___________ the electromagnet.
A) smaller
B) weaker
C) larger
D) stronger
  • 15. If one light goes out, all the lights go out in a ___________ circuit.
A) parallel
B) short
C) series
D) open
  • 16. If one light goes out, the rest stay lit in a __________ circuit.
A) parallel
B) series
C) short
D) open
  • 17. What type of circuit is this?
A) open
B) parallel
C) short
D) series
  • 18. What type of circuit is this?
A) open
B) short
C) series
D) parallel
  • 19. If the middle lightbulb would burn out, what would happen?
A) The other light would stay lit.
B) The other light would not stay lit.
C) The bulb would explode.
D) The battery would go dead.
  • 20. If you would take one bulb out, what would happen?
A) The battery would go dead.
B) The other bulb would stay lit.
C) Mrs. Wedge would be mad because you weren't following directions!
D) The other bulb would not stay lit.
  • 21. If put between these two wires, which would make the bulb light up?
A) piece of wood
B) eraser
C) paper clip
D) plastic pen cap
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