Magnetism
What would happen if the north ends of two magnets were close together?
What is repel?
Socks taken from a clothes dryer that stick together or a lightning bolt in the sky are examples of ____________.
What is static electricity?
Is a circuit open or closed if you haven't turned on the switch?
What is open?
What is a material that lets electric current pass through?
What is a conductor?
True or False: An electromagnet is a permanent magnet.
What is False? An electromagnet can be turned on or off. Once the circuit is broken, the magnetism is lost.
If a south end of a magnet is close to a north end of a magnet, the magnets will _________.
What is attract?
True or False: Like charges attract and unlike charges repel.
What is False? Like charges repel and unlike charges attract.
What is the power source in an electrical circuit?
What is a battery (or other electrical source)?
What is a material that blocks an electric current from passing through?
What is an insulator?
True or False: An electric crane is an example of an electromagnet.
What is True?
True or False: All magnets have the same shape and size.
What is False?
If you rub your hair on a balloon and the balloon becomes negatively charged, what charge will your hair have?
What is a positive charge?
What circuit has only one path for electricity to flow?
What is a series circuit?
How many poles do you get when you break a magnet into two pieces?
What is 4, 2 north and 2 south?
True or False: A refrigerator magnet is a permanent magnet.
What is True? Even when you take it off the refrigerator, it is still magnetic.
True or False: All magnets have a north and south pole.
What is True?
The movement of charges through a material?
What is electrical current?
True or False: When you turn on a light, the switch is opening the circuit.
What is False? A switch closes the circuit to turn on the light.
What is the region around a magnet where a magnetic force acts?
What is magnetic field?
An electromagnet can be increased in strength by doing what?
What is increasing coils?
Will a magnet attract copper, rubber, iron, or plastic?
What is iron?
A transfer of built up charges to another object.
What is static discharge?
What type of circuit has more than one path for electricity to flow?
What is parallel circuit?
What turns electricity into motion?
What is a motor?
An electromagnet is made up of what three items?
What is an iron core (nail), battery, and a wire?