Methods of Charging
What method of charging is responsible for you building up an electric charge when you rub your shoes across the carpet?
What is friction?
What is the charge of an electron?
What is negative?
True or false: Larger magnets exert more force than smaller magnets.
What is true?
How can electromagnet be turned off and on?
What is turning the electric current off & on?
What part of a magnet is the strongest?
What are the poles?
After turning off the TV, you notice that the hairs on your arms are attracted to the TV when you are close to it, but not touching it. What method of charging is responsible for this?
What is induction?
The north pole of a magnet will be attracted to the _______ pole of another magnet.
What is south?
True or false: The closer together two magnets are, the more force there is between them.
What is true?
Explain how to build a simple electromagnet.
What is wrap a conductive wire around an iron core then attach it to a power source to make a complete circuit?
Explain why electrical wires are usually covered with plastic or rubber.
What is plastic and rubber are insulators, so they don't allow the flow of electrons?
What method of charging is responsible for the buildup of positive and negative charges within the clouds during a thunderstorm?
What is friction?
What kind of charge will a neutral metal sphere that has LOST electrons have?
What is positive?
What other force that we learned about in the last unit behaves similarly to electric and magnetic force?
What is gravitational force?
What happens to the domains within the iron core of an electromagnet when the current is flowing?
What is the domains align?
Name two ways to increase the amount of electric current produced by a generator.
What is increasing the strength of the magnets, increasing the number of turns in the coil, or spinning the magnets faster?
What method of charging is responsible for the concentration of positive charges near the earth’s surface during a thunderstorm?
What is induction?
If two charged balloons are repelling each other, what can you say about their charges?
What is like or the same charges?
If you decrease the distance between two oppositely charged objects, the attractive force between them will _______________.
What is increase?
What is the major difference between an electromagnet and a permanent magnet?
What is an electromagnet can be turned off and on?
Name three elements from the periodic table that are magnetic
What are iron, Nickel, & cobalt?
What method of charging allows electricity to flow through copper wires into an alarm clock?
What is conduction?
After rubbing a neutral balloon on your hair to make it stand up, what kind of charge will the balloon have?
What is negative?
Will increasing the magnitude of a charge increase or decrease the amount of force it exerts?
What is increase?
Name three ways to increase the strength of an electromagnet.
What is increase the amount of turns of wire around the coil, increase the size of the iron core, or increase the amount of current running through the wire?
An electric motor performs the opposite energy transformation from a generator. What is the energy transformation in an electric motor?
What is electrical to mechanical?