Electricity
This occurs when electrical charges build up on the surface of an object
What is static electricity?
A continuous, unbroken path through which electricity can flow
What is a circuit?
Which uses more power - a 100 watt light bulb or a 60 watt light bulb
What is a 100 watt light bulb?
Any material that has the ability to attract iron
What is a magnet?
Uses electricity to communicate information
What is an electronic device?
He revolutionized the use of electricity when he invented the electric light bulb in 1879
Who is Thomas Edison?
The flow of electrons around a circuit
What is current electricity?
Most batteries that we use are _____-cell batteries
What are dry-cell batteries?
Measures the amount of electrical push, or force, in a circuit
What is a volt?
The area of magnetic force around a magnet
What is a magnetic field?
The brain of the computer that tells the other parts of the computer what to do
What is the central processing unit (or CPU)?
He believed that lightning was a form of static electricity and that its electrical charges could be transferred to another object
Who is Benjamin Franklin?
What is a conductor?
Has multiple paths for the flow of electricity
What is a parallel circuit?
Measures power, or how fast work is done
What is a watt?
Magnetic force is strongest at this part of a magnet
What are the poles of a magnet?
A material that can work as a conductor or as an insulator (ex. silicon, a major ingredient of sand)
What is a semiconductor?
He developed a light bulb filament that lasted longer and was cheaper than Edison's filament
Who is Lewis Latimer?
A material through which electricity cannot flow (ex. plastic, wood, and glass)
What is an insulator?
Has only one path for the flow of electricity
What is a series circuit?
Measures how much current flows through a given part of a circuit in one second
What is an ampere?
A coil of wire with a core attached to an electrical source
What is an electrical signal?
He discovered that current traveling through a wire produces a weak magnetic field in the live wire
Who is Hans Christian Oersted?
A material that reduces the flow of electricity
What is a resistor?
A battery works as a result of a ______________ and the movement of electrons
What is a chemical reaction?
This will open if more electrical current than the circuit can safely handle passes through the circuit
What is a circuit breaker?
This uses a magnet to convert motion into electrical energy
What is a generator?
A very small circuit with all the parts built into it, they signal information by opening and closing electrical circuits in sequence
What is an integrated circuit or microchip?
He discovered that adding a metal core to a coil of wire increased magnetism
Who is William Sturgeon?
A conductor that can be moved to bridge the gap or not bridge the gap in a circuit
What is a switch?
A liquid or paste substance that conducts electricity
What is an electrolyte?
formula that relates the three main units of measure for electricity
What is [watts/volts = amperes]
What is the size of the core, the number of coils around the core, or distance between the poles?
Uses open and closed circuits to communicate the number 0 and the number 1
What is the binary number system?
They discovered that moving a magnet around or through a loop of wire produces electricity in the wire
Who are Joseph Henry and Michael Faraday?