Electricity 1

Particles inside atoms have positive or negative ___________

• wires

• poles

• charges

• neutrons

An atom usually has __________ charge because the positive and negative charges equal each other.

• no

• some

• one

• positive

Rubbing 2 different materials together knocks ___________ charges off 1 material making it ___________

• neutral, electrical

• electrical, neutral

• negative, positive

• positive, negative

Opposite charges _________ each other.

• dislike

• repel

• avoid

• attract

Similar charges __________ each other.

• dislike

• like

• repel

• attract

The build up of electrical charge on a material is called_____________

• static electricity

• current electricity

• positive electricity

• negative electricity

Rubbing a balloon with a piece of wool knocks _______ charges off the wool and onto the balloon.

• positive

• negative

• static

• neutron

Electricity flows easily through materials known as ___________

• copper

• conductors

• wires

• insulators

A material through which electricity does not flow is called

• instigator

• wire

• conductor

• insulator

The strength of an electrical current is measure in _____________

• ammeters

• amateurs

• amperes

• ampitheaters