A form of energy that involves the flow of electric charges is called (a)   .

• electricity

• an insulator

• magnetism

All matter is made up of tiny particles that have electric charges. The tiny particles are called (a)   .

• atoms

• circuits

• conductors

When electric charges build up on the surface of an object, (a)   occurs.

• a circuit

• current electricity

• static electricity

A material that allows electricity to flow through it easily is called _____.

• Conductor
• Insulator
• Semiconductor

• Superconductor

An object that attracts certain metals is called (a)   .

• a circuit

• an insulator

• a magnet

A magnet does not need to touch a metal object in order for the magnet to move the object because of the magnet’s (a)   .

• current

• magnetic field
• shape

The invisible magnetic field can be observed by sprinkling (a)   around the magnet.

• bits of paper

• iron filings
• pieces of plastic

Count the number of positive and negative charges. Decide whether the circle has a negative charge, has a positive charge, or is neutral.

• positive

• neutral

• negative

Count the number of positive and negative charges. Decide whether the circle has a negative charge, has a positive charge, or is neutral.

• positive

• neutral

• negative

Count the number of positive and negative charges. Decide whether the circle has a negative charge, has a positive charge, or is neutral.

• positive

• neutral

• negative