Review 1
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100
Johnny has a light bulb and battery. What does Johnny need to complete the simple circuit?
a.plastic water bottles
b. wires
c. a t-shirt
d. toothpicks
b. wires
100
what is rubber?
a. conductor
b. insulator
b. insulator
100
Martin has a blowdryer in his room. It requires electricity to work. Which of the following is necessary in order for electricity to move from one source to the blowdryer?
a. a magnet
b. a light bulb
c. a circuit
d. a insulator
c. a circuit
100
Which of the following would create static electricity?
a. pouring a glass of water
b. plugging in a blowdryer
c. clothes spinning around in a dryer
c. clothes spinning around in a dryer
100
Emily's husband wired the oven in her new kitchen. He thought everything was working and connected, but the oven would not work. Would could have been the problem?
a. He wired the oven using wire as a conductor.
b. The oven had too many knobs on it.
c. He had an open circuit.
d. He needed a few more batteries.
c. He had an open circuit.
200
When should you never turn on a device when plugged in?
a. when you are with your friends
b. when you are outside your house
c. when you are in the dark
d. when you are in a bathtub full of water
d. when you are in a bathtub full of water
200
what is aluminium?
a. insulator
b. conductor
b. conductor
200
what is the continuous flow of electric charges?
a. electric circuit
b. electric cell
c. electric current
c. electric current
200
Which of the following is an example of a permanent magnet?
a. electromagnet
b. bar magnet
c. temporary magnet
d. field magnet
b. bar magnet
200
Ginger has an electronic CD player in her playroom. The CD player was not working. What is required for the CD player to work properly?
a. magnet b. insulator c. circuit
c. circuit
300
The flow of electrical charges is best referred to by which of the following terms?
a. energy
b. current
c. conductance
d. resistance
b. current
300
Rubbing socks against a trampoline creates what?
a. light energy
b. sound energy
c. static electricity
d.heat
c. static electricty
300
Materials that electrical charges do not flow through easily
a. conductors
b. insulators
c. electric circuit
d. electric current
b. insulators
300
Which material allows electricity to flow between the battery and the light bulb?
a. rubber tube
b. wooden rod
c. copper wire
d. cotton string
c. copper wire
300
A ______________________ is needed to provide energy to the circuit.
a. insulator b. wire
c. switch d. battery
d. battery
400
True or False -
An electromagnet can be turned off and on.
True
400
The force of a magnet is greatest at two areas called?
a. north pole
b. south pole
c. magnetic poles
c. magnetic poles
400
Which of the following consists of a battery, a wire and a nail?
a. bar magnet
b. electric motor
c. electromagnet
c. electromagnet
400
Which of the following electromagnets would have the strongest magnetic field?
a. an electromagnet with the coil wrapped one time
b. an electromagnet with the coil wrapped two times
c. an electromagnet with the coil wrapped four times
c. an electromagnet with the coil wrapped four times
400
A _____________________ shows that the circuit conducts electricity.
a. wire b. light bulb c. switch
b. light bulb
500
Will this circuit work? Why or why not?
No because there is a break in the circuit.
500
At which location is the magnetic field the strongest?
a. 1 b. 2 c. 3 d. 4
d. 4
500
A bolt of lighting is most like
a. a motor
b. an electromagnet
c. a dry cell battery
d. a shock from a metal doorknob
d. a shock from a metal doorknob
500
What is the best electrical conductor?
a. water
b. wood
c. plastic
d. glass
a. water
500
A _____________________ is needed to connect parts of the circuit and allow electricity to flow.
a. switch b. wire c. insulator
b. wire