What is the purpose of the battery as a part of a circuit?
What is the power source?
What 3 items are needed to make a simple circuit?
A power source (battery), a light bulb, and wires.
What makes this statement FALSE?
"Permanent magnets can be turned on and off, while electromagnets are always producing magnetic fields."
Permanent magnets CANNOT be turned off, electromagnets only produce magnetic fields when a power source is present.
TRUE or FALSE?
An aluminum can, a metal spoon, and a copper wire are all examples of insulators.
FALSE
The strength of the magnetism of a bar magnet can be controlled.
True
How are bar magnets and electromagnets alike?
Both produce magnetic fields.
Both have north and south poles.
Both can attract metal objects.
How are bar magnets and electromagnets different?
The difference is that a bar magnet is a permanent magnet. At the same time, an electromagnet only generates a magnetic field when an electric current flows through it, making it temporary (it can be turned on and off).