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