Matter and Electricity
What is electricity?
A form of energy associated with positive and negative charge caused by the flow of electrons.
What is an insulator?
A material that does not allow electricity to flow through it easily.
Who invented the basic incandescent bulb?
Thomas Edison
What is a complete circuit?
An electric current that moves along a wire or path beginning and endingat the same point.
How many volts are in a D battery?
1.5 Volts
What kind of charge does an electron have?
A negative charge.
What is a conductor?
A material that does allow electric current to pass through it.
Which bulbs have a tungsten filament?
Incandescent and Halogen
What happens in a short circuit?
The electric current takes a short cut and doesn't go through the appliance. It causes a surge of current, which often is indicated by increasing temperature (heat).
How much voltage is in an electric outlet?
120 Volts
What is voltage?
Difference in charge between two points (electric potential energy)
What is an example of a conductor?
Many possibilities.
What dangerous gas is inside a fluorescent bulb?
Mercury gas
How could a battery, light bulb, and wire be arranged to make a complete circuit? Draw your answer.
Multiple Responses Possible
How many volts are in a car battery?
12.6 Volts
What is current?
The flow of electricity (electrons), which is electric kinetic energy
What is an example of an insulator?
Several examples can be given.
Which bulb can last 15 years?
LED
How much is the average cost of a kilowatt-hour of electricity in the USA?
$0.12
If you had four D batteries wired together, what would the voltage be?
6 Volts
Everything in the world is made up of what?
Atoms
What would be an insulated material in an incandescent light bulb?
Glass or ceramic
Which bulb stays relatively cool (does not produce much heat) when used?
What is an electricity-free way to complete a task usually completed by an appliance?
(Identify the appliance and the electricity-free method.)
Many possible answers.
How many volts are in a bolt of lightning?
Over 100 million Volts