Show:
Static Electricity
Current Electricity
Electric Circuits
Magnets and Electromagnets
Generators/Motors
100
electron
What is the part of an atom that gives off a negative charge?
100
electric current
What is the constant flow of electrons called?
100
switch
What device is used to open and close a circuit?
100
poles
What is the area of a magnet where the force of magnetism is strongest?
100
generator
What device uses magnetism to produce electricity?
200
proton
What is the part of an atom that gives off a positive charge?
200
amp
What is a unit in which electricity is measured?
200
fuses and circuit breakers
What two safety devices are used to open a circuit when too much current is detected?
200
magnetic field
What is the area around a magnet where the force of magnetism can be felt but not seen?
200
electric motor
What device uses electricity to produce magnetism?
300
neutron
What is the part of an atom that has no charge?
300
volt
What is the unit of measure used to describe the "push" given to electrons?
300
series circuit
What is a type of circuit in which electric current has only one pathway to follow?
300
magnetic lines of force
What lines are formed when iron filings are sprinkled on a sheet of paper over a magnet?
300
steam or flowing water
What force is used to turn the metal rod in a generator?
400
electrons
What is the part of an atom that can move from object to object by way of friction?
400
conductors
What is the name of a material that allows electric current to freely move through it?
400
parallel circuit
What is a type of circuit in which electric current has more than one pathway to follow?
400
electromagnet
What is the name of a temporary magnet created by a flow of electric current around an iron bar?
400
electromagnet
What part of a motor turns a rod which causes other parts of the motor to move?
500
lightning
What is a natural example of static electricity naturally occuring in nature?
500
insulator
What is the name of a material that does not allow electric current to flow throught it?
500
output device switch conductors source of energy
What four things are needed to make a complete circuit?
500
increase the number of coils around the iron bar increase the strength of the energy source (current) increase the size of the iron bar
What are two ways to increase the strength of an electromagnet?
500
generator
What device provides an alternative source of electricity source when power is lost or interrupted?