Static electricity
Objects that have LIKE charges:
Objects that have UNLIKE charges:
Repel
Attract
Name the four parts of a circuit
Battery, wire, switch, light bulb
A conductor is:
a material through which electric charges can easily flow
What is a magnet?
an object that can push or pull on iron without touching the metal
Voltage is:
a) An amount of electrical energy
b) A force of electrical energy
c) A sound of electrical energy
a) an amount of electrical energy
What in nature is an example of static electricity?
Lightning
What is the function of a battery in a circuit?
It provides the “push” to keep electrons moving in the circuit
Name two examples of conductors
Copper
Iron
Gold
Water
Aluminum
Steel
silver
If the north poles of two magnets are close, they will:
Repel
In a ___________ circuit, electricity has more
than one path to follow.
a) Series
b) parallel
a) series
You rub a plastic comb with wool. Why will the comb then attract small bits of paper?
a. The comb has a magnetic attraction.
b. The bits of paper have electric discharge.
c. The comb and paper both have a negative charge.
d. The comb has a negative charge.
d. The comb has a negative charge.
Explain one way to change a circuit
Adding more bulbs
Add another battery
Switch the wires around
An insulator is:
An insulator is a material through which an electric charge cannot easily flow
A magnetic field:
a) Is a field full of magnets
b) Is only present in bar magnets
c) Is the area around a magnet
c. Is the area around a magnet
An open circuit:
a) Allows electricity to flow through
b) Does not allow electricity to flow through
a) Allows electricity to flow through
What is it called when electrons move quickly from one object to another?
Electric Discharge
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
Give three examples of insulators
Most plastics
Glass
Cloth
Sand
Rubber
Wood
Dry air
Magnets have poles that are:
a) East and West
b) North and South
c) Up and Down
d) Left and Right
b) North and South
As the distance between two objects increases,
the magnetic force
a)Increases
b)decreases
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
In which part of a circuit is electrical energy changed into other forms of energy?
a. The battery
b. The switch
c. The wire
d. The load (anything that uses current to work)
d. The load (anything that uses current to work)
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
Which poles would attract:
a) North and North
b) South and South
c) North and South
d) East and West
c) North and South
Electrical energy results from:
a)East and West charges
b)Matter
c) Positive and negative charges
d)A wire
c) Positive and negative charges