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34 terms

Circuits, Batteries and Bulbs

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Electricity
The flow of tiny particles called electrons
Electrical Circuit
Electrons flowing in a closed path flow in this
Solar Power
Energy supplied by electromagnetic radiation
Alternating Current
A periodic conduction current that reverses its direction at regular intervals
Direct Current
An electrical current flowing in one direction only
Electric Pole
One of two terminals of an electric cell, battery or generator; one is designated positive and the other negative
Watt
A unit of power or work of one ampere of electric current under pressure of one volt
Volt
A unit of electromotive force which, when applied to a conductor whose resistance is one ohm will produce a current of one ampere
Insulator
materials that don't let electricity go through them
Conductor
materials that let electricity go through them
Series Circuit
A series circuit allows electrons to follow only one path. The loads in a series circuit must share the available voltage. In other words, each load in a series circuit will use up some portion of the voltage, leaving less for the next load in the circuit. This means that the light, heat, or sound given off by the device will be reduced.
Parallel Circuit
the electric current can follow more than one path to return to the source, so it splits up among all the available paths.
Metal
metals are good conductors
Electrons
part of atoms
Circuit
this word means "go around"
Why don't you get electricuted in a bumper car?
Because you don't touch the source of the electricity at the top of the rod
What type of metal conducts electricity better?
Cold
There is enough electricity coming out of the wall to do what to you?
stop your heart and burn you
How does an electric train run?
There is a circuit inside the train track
Which scientist took a coil of wire and moved it over a magnet to cause electricity?
Michael Faraday
What does the solar electric hybrid car run on?
batteries
Electrons jump from what to what?
one atom to another
Resistor
Something that lets only some of the electrons pass through
Voltage
In an electrical circuit the pressure is referred to as this
Amp
In an electrical circuit the number of electrons is referred to as this
Electrical Power
voltage plus amps
Electrons are pushed by what two things?
Chemical Reactions and generators
Electrtrodes
The goopy chemicals inside a battery
An electric eel can produce how many volts of electricity?
up to 800
What can move huge generators?
Water
AC stands for
Alternating current
DC stands for
Direct current
Photovoltaic cell
a cell that turns light into electricity
Why are there two prongs on every plug?
Because electricity has to travel in a circuit