Magnets and Magnetism
It converts electrical energy to mechanical energy.
What is a motor?
Groups of atoms that align to form small, magnetized regions in a material.
What are magnetic domains?
The interaction between electricity and magnetism
What is electromagnetism?
This force can be created with an electrical current.
What is magnetic force?
________ is an example of a good electrical insulator.
Is it copper, silver, aluminum foil, or rubber?
What is rubber?
Electrical wires sometimes have a plastic coating wrapped around them. The plastic coating makes wires safe to handle.
What is a good insulator?
A solenoid that has an iron core.
What is an electromagnet?
It converts mechanical energy to electrical energy.
What is a generator?
A material in which electrons are able to move easily or freely.
What is a conductor?
The region around a magnet in which it exerts magnetic force
What is a magnetic field?
Low resistance wire is best used for...
What are power lines?
A continuous flow of charged particles.
What is an electric current?
An electric generator uses _________ to change mechanical energy into electrical energy
What is electromagnets?
A force that acts between neutral objects or surfaces when they are rubbed together.
What is friction?
A charged object directly touches another object that is neutral in charge.
What is conduction?
Before a flash of lightning, electric charge builds up on the surface of the ground through...
What is induction?
True or False
Magnetic fields can affect objects that are not in direct contact with each other.
What is "True"?
A measure of the pull, or force, of gravity on an object.
What is weight?
The strongest effects are near the ____ of a bar magnet
What are poles (ends)?