Electricity and magnetism

Electric energy begins with __________ particles.

charged

Atoms are composed of smaller particles called __________, neutrons, and electrons.

protons

Protons carry a __________ charge.

positive

When the number of electrons in an atom is equal to protons, the atom has a charge of __________.

zero

The buildup of charge on an object is known as __________ electricity.

static

If a neutral object loses electrons, the object will have an excess of __________ charge.

positive

When two objects touch or nearly touch, charged particles can move from one object to the __________.

other

When you rub a balloon against your hair, negative charges move from the __________ to the balloon.

hair

A flow of electric charges is called an __________ current.

electric

A __________ is a material that lets charges flow through it easily.

conductor

Metals such as copper and silver are good __________.

conductors

An __________ is a material that does not let charges flow through it easily.

insulator

An electric circuit has three main parts: a conducting path, a source of electric energy, and a __________.

device

A battery converts __________ energy to electric energy.

chemical

When an electric current flows through a wire, a __________ field is created around the wire.

magnetic

The Earth behaves as a giant __________.

magnet

A __________ is a small instrument that helps us to find directions.

compass

There are three types of magnets: permanent magnets, temporary magnets, and __________.

electromagnets

An __________ is a magnet that can be switched on and off with electricity.

electromagnet

Magnets create an invisible __________ force.

magnetic

Electricity can produce __________.

magnetism

The north pole of Earth's magnetic field is located near the geographic __________ Pole.

North

Like poles __________ each other, while unlike poles attract.

repel

A light bulb converts electric energy into __________.

light

Many circuits also have a __________ to turn the electric current on or off.

switch

Negative charges move from object to object more easily than __________ charges.

positive