Vocabulary
Electricity travels along a pathway from a power source through an appliance back to the power source.
What is a complete circuit?
The amount of voltage in a D battery.
1.5 volts
The part of an incandescent light bulb that produces light.
The filament
Name three necessary parts to creating a complete circuit.
power source, wire, appliance
Invented the long-lasting, incandescent light bulb.
Thomas Edison
Electricity travels along a pathway from a power source to the power source without going through an appliance.
What is a short circuit?
The amount of voltage in an AA battery.
1.5 volts
Name three types of light bulbs.
Incandescent, CFL, LED, Halogen
You create a circuit but the light bulb doesn't light and the battery gets hot. What is happening?
Short circuit
Name three appliances that use electricity and possible electricity-free alternatives.
Ex. dishwasher/ hand-washing dishes in sink
Ex. hairdryer/ air or towel-dry hair
Define electricity.
The movement of electrons providing energy.
The amount of voltage in a car battery.
12.6 volts
The type of light bulb that produces light by exciting mercury gas molecules.
CFL (Compact Fluorescent Lamp)
Why would you not connect a 12.6 V battery to a flashlight bulb?
The voltage is to high and the bulb would immediately burn out.
The nichrome filament glowed a dull red before burning out. Some released smoke as the metal heated up.
The electric potential energy or the difference between two points.
What is voltage?
The amount of voltage in a regular electric socket.
120 volts
This bulb has no filament and uses semi-conductors to produce light.
LED (light emitting diodes)
How is a short circuit different than an incomplete circuit?
Incomplete circuit does not begin/end at the power source so it does not create a pathway for electricity.
A short circuit bypasses the appliance but does have a pathway to begin/end at the power source.
In what year were most of the homes in the USA connected to the power grid?
1931
Electric kinetic energy or the flow of electricity.
What is current?
The amount of voltage in 4 D batteries.
6 volts
Name two reasons that people are moving away from using incandescent light bulbs.
Loss of about 90% of its electricity as heat and only lasts 1-2 years.
How many D batteries would you need to fully light a 120 V incandescent light bulb?
What general appliance use commonly requires a great deal of electricity?
Creating heat.