What is a good object or material to rub a balloon against to charge the balloon with static electricity so it will stick to the wall?
Your hair or wool
100
What is a conductor?
A material that allows electrons to flow easily
100
How many pathways are there for the electricity to flow on a series circuit?
One
100
What is commonly used to turn electrical current on or off?
A switch
100
If you add more batteries to an electrical circuit, what will happen to the light bulbs on that circuit?
a. the light bulbs will last longer
b. there will be no change
c. the light bulbs will shine brighter
C: The light bulbs will shine brighter
200
True or False? Rubbing a piece of plastic with a piece of wool will generate static electricity?
True
200
What is a nonconductor?
A material that allows little or no electrical flow
200
Do lights shine brighter on a series circuit or a parallel circuit?
Parallel
200
What is the job of a fuse on an electrical circuit?
To prevent the circuit from overloading
200
What are the different parts needed for a circuit?
Copper wires, an energy source (example: battery), load, switch, fuse
300
Two objects that are both negatively charged will ____________ each other.
repel
300
Almost any object becomes a good conductor when it is ________.
Wet
300
What happens if one light bulb burns out on a series circuit?
All of the lights will go out because it is no longer a complete circuit.
300
On a complete circuit, is the switch open or closed?
Closed
300
What device measures how much electricity is flowing through the wires at one time?
Ammeter
400
How can you tell when static electricity has been discharged?
You can see light (if it is dark) and you can feel a shock.
Bonus Question: What is a natural example of a very large static electrical discharge?
400
Are the materials on this list conductors or nonconductors?
- salt solution
- carbon
- graphite
- copper wire
- aluminum
- silver
- impure water
- zinc
- most metals
Conductors!
400
What would happen if one light bulb (out of many) on a parallel circuit burned out?
The other lights would still light because the current still has a complete pathway to follow.
400
Explain what happens to a fuse when the electric circuit is overloaded.
The metal strip (the fuse strip) breaks, or melts, and the flow of electricity stops because the circuit is no longer complete.
400
What is most likely the most common type of switch in your home or in our school?
Snap, toggle, or wall switch
500
What is an example of static electricity in everyday life?
Some possible answers:
- your hair stands up after you comb it
- your hair stands up after you go down a plastic slide
- you feel a little shock as you put your hand on the door knob after rubbing your stocking feet on the carpet
- your clothes "stick" together as you take them out of the dryer
500
Are the materials on this list conductors or nonconductors?
- silk
- plastic
- rubber
- glass
- diamond
- wool
- wood
- fur
Nonconductors!
500
Are the lights in your home most likely on a series circuit or a parallel circuit? Why?
A parallel circuit. This is so the lights and all things that require electricity can have their own complete path of electricity and continue running even if one light burns out.
500
Where do electric wires connect to a switch?
At the terminals
500
What is an example of a power source that is not a battery?
Burning fossil fuels, wind energy, solar energy, nuclear energy