Static Electricity
Circuits
Conductors/
Insulators
Insulators
Magnets
Pictures
100
Objects that have LIKE charges:
Objects that have UNLIKE charges:
Repel
Attract
100
Name the four parts of a circuit
Battery, wire, switch, light bulb
100
A conductor is:
a material through which electric charges can easily flow
100
What is a magnet?
an object that can push or pull on iron without touching the metal
100
Electromagnet
200
What in nature is an example of static electricity?
lightning
200
What is the function of a battery in a circuit?
It provides the r“push” to keep electrons moving in the circuit
200
Name two examples of conductors
Copper
Iron
Gold
Water
Aluminum
Steel
silver
200
If the north poles of two magnets are close, they will:
Repel
200
Is this an open or a closed circuit?
Open
300
You rub a plastic comb with wool. Why will the comb then attract small bits of paper?
The comb has a magnetic attraction.
The bits of paper have electric discharge.
The comb and paper both have a negative charge.
The comb has a negative charge.
4. The comb has a negative charge.
300
Explain one way to change a circuit
Adding more bulbs
Add another battery
Switch the wires around
300
An insulator is:
An insulator is a material through which an electric charge cannot easily flow
300
How can you turn a magnet into an electromagnet?
300
What kind of circuit is this?
Parallel
400
What is it called when electrons move quickly from one object to another?
Electric Discharge
400
Explain how a bulb works
The filament wire is very thin, so electrons have a hard time passing through. When electrons do pass through, the filament becomes hot and begins to glow
400
Give three examples of insulators
Most plastics
Glass
Cloth
Sand
Rubber
Wood
Dry air
400
What are the two ends of a magnet called?
north pole & south pole
400
What is important about this crane?
It has an electromagnet that can turn on and off
500
Explain what happens when you rub a balloon on your head and then stick it to the whiteboard.
The balloon picks up electrons from your hair giving it a negative charge and then attracts to the positive charge of the whiteboard.
500
In which part of a circuit is electrical energy changed into other forms of energy?
The battery
The switch
The wire
The load (anything that uses current to work)
The load (anything that uses current to work)
500
Explain how you can test whether an object in an insulator or a conductor
Build a circuit and see if the object lights the bulb or not
500
Name two advantages of electromagnets
They can be turned on and off
They can be made stronger or weaker by changing the strength of the battery or wire loops
The direction of the fields can be changed (switch the poles) by switching the ends of the battery
500
In a series circuit that has two light bulbs, what happens to one of the light bulbs when the other bulb burns out?
The good light bulb will also go out.