Electricity Flashcards
What does a negative electrical charge symbol look
- (minus)
What creates static electricity
Rubbing certain materials together
What does a positive electrical charge symbol look like
+ (Plus)
What kind of material is needed for electricity to flow
Conductor
Name examples of conductors
Metal copper
What type of material does not conduct electricity as well
Insulator
Name some examples of an insulator
Rubber plastic wood
Why will energy pass more or less easily through conducting materials
Because of the materials resistance
What is the discharge of static electricity in the atmosphere called?
Lightning
What types of energy can electrical energy be transformed into?
Heat
Light
Mechanical
What creates an electric current (electricity)?
A continuous flow of negative charges?
What is the pathway taken by an electric current called?
A Circuit
What type of circuit allows the movement of electrical energy?
Closed circuit
What type of circuit prevents the movement of electrical energy?
Open circuit
Dry cell batteries use the symbols + and -
What does - represent?
Electrical energy
How many pathways are in a series circuit
One
What’s a series circuit
A circuit where each bulb is connected to the next so that if any bulb closer to the battery goes out all bulbs behind it go out
How many pathways are in a parallel circuit
Two or more
What’s a parallel circut
A circut where each bulb is directilly connected to the battery so that if one light goes out the others still shine
Describe the lines of force a magnet
They arch to create a magnetic force
What is the space around a magnet where magnetism happens
A magnetic field
What creates a magnetic field
An electric current flowing through a wire
What creates a electric current
A moving magnetic field
What’s an example of a simple electromagnet
Connect one end of a wire to the end of a nail connect the other end to the battery
What’s an example of a electromagnet
Connect one end of a wire to a battery then wrap the wire around the nail connect the other end to the battery
How are electromagnets different from permanent magnets
Electromagnets can be turned off or on
What happens when you attach a electromagnet to a nail
You make it stronger
What kind of metal atract other types of medal
Iron baring nickel and cobalt
What did Ben Franklin study by attaching a key to a kite and flying it in a storm
Static electricity
What scientist discovered how to change electrical energy into light energy
Thomas Edison
What American scientist found ways to use electricity for recording light and sound
Thomas Edison
What was michael faraday known for
He discovered a magnetic field could cause electrical current to flow
Who built first generator which became a basis built for our contementory generators built today
Michael faraday
