Heat, Electricity and Magnetism A Quiz

Heat flows by _______ from a warm material to a cool substance.

Heat flows by conduction from a warm material to a cool substance. As the bottom of a pan is heated, heat energy is passed through the metal.

________ is the movement of heat energy through air or liquid.

Convection is the movement of heat energy through air or liquid. Examples of convection are heat baking bread in an oven or water boiling in a pan.

The sun or fire transfers heat energy through ________.

The sun or fire transfers heat energy through radiation.

What do you call objects that don’t conduct heat very well?

Objects that don’t conduct heat very well are called insulators. Wood, plastic, and glass are insulators.

What do you call objects that can easily conduct heat?

Objects that easily conduct heat are called conductors. Metal is a good example of an conductor.

An electrical _______ is a close- looped path of wire through which an electrical current flows.

An electrical circuit is a close-looped path of wire through which an electrical current flows.

Draw an open circuit.

In an open circuit one of the wires should be disconnected.

What do you call moving electrons that travel in a flow?

An electrical current is moving electrons that travel in a flow.

A battery has two ______.

A battery has two poles: a positive and negative pole.

Magnets have two poles. Two magnets’ north poles will ______.

Two like poles, either north or south, will repel. Repel means to push away.

The north pole of one magnet and the south pole of another magnet will ______.

The north and south poles will attract, or pull together.