BJU Science 3 Chapter 20 Review

A form of energy that involves the flow of electric charges is called ___.

• electricity

• an insulator

• magnetism

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

• atoms

• circuits

• conductors

Tags

NGSS.MS-PS1-1

When electric charges build up on the surface of an object, ___ occurs.

• a circuit

• current electricity

• static electricity

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

• a circuit

• a conductor

• an insulator

An object that attracts certain metals is called ___.

• a circuit

• an insulator

• a magnet

Tags

NGSS.MS-PS2-3

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

• current

• magnetic field

• shape

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The invisible magnetic field can be observed by sprinkling ___ around the magnet.

• bits of paper

• iron filings

• pieces of plastic

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Mark the answer.

• closed circuit

• open circuit

Tags

NGSS.4-PS3-2

Mark the answer.

• closed circuit

• open circuit

The only electric charge that can move from object to object is a positive charge.

• True

• False