Electricity quiz Flashcards
(24 cards)
what is the meaning of atomic structure?
the structure of an atom
what are atoms made of?
protons, nutrons and electrons
where in the atom are protons and neutrons?
The nucleus
What is the nucleus?
the middle of the atom were protons and neutrons are
true or false? electrons outside of the nucleus are very hard to add or get rid of
FALSE! it is very easy to add or remove
what attracts (magnets)?
opposites or positive and negatives
true or false? like charges attract
FALSE!!!! Like charges repel opposites attract
what is a static charge?
A static charge is an electric charge that is stationary (not moving).
when does friction occur?
Friction: occurs when two objects are rubbed together the objects will have opposite charges at the end
when does conduction occur?
Conduction (contact): occurs when objects touch and an electric charge is transferred from one object to the other
what results in induction?
dbl check on slides ***Induction: results from one charged object going near one that is not charged. One side will have either an excess of positive or negative charges
What type of materials HOLD electrons?
insulators
What type of materials easily RELEASE electrons?
Conductors
What is the Electrostatic Series?
a list of materials that shows which ones easily hold electrons and which ones easily release electrons
in the Electrostatic Series does positive mean the materials hold electrons easily or release them?
Positive means the tendency to lose them
what is the valence shell?
the outer shell or orbit in the atom
what is the difference between insulators and conductors?
Conductors allow electrons to flow through it
Insulators do not let electrons flow through
Examples of insulators
Glass
wood
rock
Examples of conductors
Brass
gold
steel
Example of friction
Sheets coming out of the drier
Rubbing your feet against a carpet
Rubbing two rocks together
Example of conduction
AED’s
Heat from element on stove boiling water
Example of Induction charging
electromagentic charge is produced from induction coils and charges a phone, microphone, etc.
Structure of a wire
A single insulated conductor (e.g. a piece of copper wrapped in rubber)
