The release of the built up negative charge. (HINT: Think about what happens when you get shocked.)
What is an electric discharge?
100
The pathway that electric current follows.
What are electric circuits?
100
An object that attracts certain metals, mainly iron.
What is a magnet?
100
A temporary magnet that uses electricity to produce magnetism.
What is an electromagnet?
100
A balloon and a cloth can help you investigate what type of electricity?
What is static electricity?
200
Built up electric charge.
What is static electricity?
200
Multiple connected pathways through which electric current flows.
What is a parallel circuit?
200
The space in which the force of a magnet can act.
What is a magnetic field?
200
List the three materials needed to make an electromagnet.
What are battery, nail, and wire.
200
Earth acts like which of the following magnets: bar magnet or electromagnet.
What is a bar magnet?
300
A continuous flow of electric charges.
What is an electric current?
300
Give an example of an insulator.
Give an example of a conductor.
What is ...
300
The force of a magnet is greatest where?
What is the magnetic poles?
300
Name two ways to make an electromagnet stronger.
What are increase number of coils or get a stronger battery.
300
Liquid water freezing into ice is an example of this type of change.
What is a physical change?
400
Materials through which negatively charged particles move easily.
What are conductors?
400
A single pathway through which electric current flows.
What is series circuit?
400
Earth acts as a magnet and has a magnetic field because of its core composed of this material.
What is molten iron?
400
Name how a bar magnet and an electromagnet are different.
Bar magnet is permanent.
Electromagnet is temporary and can be turned on and off.
400
Tell why a switch is useful in an electric circuit.
What is it opens and closes the circuit which turns the power on or off.
500
Materials that do not allow electric charges to flow easily through them.
What are insulators?
500
The four parts in an electric circuit.
What are electrical source, connector, switch, and load.
500
Describe what happens when you hold two magnets together with the south poles facing each other.
Describe what happens when you hold two magnets together with the north and south poles facing each other.
What is repel, attract.
500
Name how electricity produces magnetism in an electromagnet.
What is the current passes through an electric wire wrapped around a piece of iron. The current produces a magnetic field around the wire, which magnetizes the iron.
500
The switch was left open on a string of Christmas lights. Are the lights powered on or off? Is it an open or closed circuit.