Electricity And Magnetism Question Preview (ID: 45843)


Review The Terms And Concepts We Have Learned About Electricity And Magnetism. TEACHERS: click here for quick copy question ID numbers.

Magnets and electromagnets both have _____________________.
a) currents
b) electricity
c) poles
d) power source

Which statement is true?
a) The south pole of one magnet will repel the north pole of another magnet.
b) The north pole of one magnet will attract the south pole of another magnet.
c) The south pole of one magnet will attract the south pole of another magnet.
d) Magnets do not have poles.

____________ is the buildup of excess charge caused by the gain or loss of electrons.
a) alternating current
b) current electricity
c) direct current
d) static electricity

Static electricity is an example of ________________.
a) current electricity
b) human harnessed electricity
c) naturally occuring electricity
d) alternating electricity

Ms. Jones science class is studying whether materials conduct electricity or not. Which experiment would help them learn if an object conducts electricity?
a) a simple circuit with a switch and a load
b) a parallel circuit with two switches and two loads
c) a simple switch with a pencil and a load
d) a simple circuit with a power source and a load

What is a switch responsible for in a circuit?
a) conducting electricity
b) controlling the flow of electricity
c) generating electricity
d) using electricity

Which of these describes a complete circuit?
a) wire connected to the positive end of a battery; connected to a load; connected to the negative end of a battery
b) wire connected to the positive end of a battery, connected to a load; connected back to the positive end of a battery
c) wire connected to the negative end of a battery; connected to a load; connected back to a negative end of a battery
d) wire connected to the side of a battery; connected to a load; connected back to the side of a battery

Which list only contains conductors?
a) wood, wool, plastic
b) wood, water, wool
c) steel, gold, plastic
d) steel, water, aluminum

What is the purpose of the battery in a circuit?
a) conducts electricity
b) generates electricity
c) hinders electricity
d) uses electricity

Which list includes only insulators?
a) aluminum, fiberglass, plastic, wool
b) gold, silver, copper, nickel
c) wool, plastic, feathers, fiberglass
d) plastic, feathers, wood, water

Is copper an insulator or conductor?
a) conductor
b) insulator
c)
d)

Is plastic an insulator or a conductor?
a) conductor
b) insulator
c)
d)

Is graphite a conductor or an insulator?
a) conductor
b) insulator
c)
d)

In a circuit, the wire is responsible for ___________________.
a) conducting electricity
b) generating electricity
c) hindering electricity
d) using electricity

Isabel makes an open circuit using a battery, a bulb, and wires. She leaves the ends of the two wires free . If she tests a needle for conduction by touching it with the ends of the free wires, what will happen?
a) The light will not turn on.
b) The light will turn on.
c) The needle will become hot.
d) The needle will shock you.

Which statement is NOT true about electromagnets?
a) Magnetism is caused by electrons.
b) Electromagnets can be turned on or off.
c) Electromagnets are permanent magnets.
d) Electromagnets can be used in motors.

Which statement is NOT true about bar magnets?
a) These are temporary magnets.
b) These attract and repel.
c) These have north and south poles
d) These require electricity to work.

Which is a reason you might not use an electromagnet?
a) You can shut it on and off.
b) It is a strong magnet.
c) It can be used all the time.
d) You need electricity for it to work.

Which is NOT a reason to use a permanent magnet?
a) You don't need electricity.
b) There are no moving parts.
c) You have to recharge it.
d) It has constant strength.

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