Electricity and Energy ~ Investigation 3 ~ Grade 4

Artificial light:

Light produced by electrical sources.

Battery:

A device that stores chemical energy and can be used to produced electrical current.

Bulb:

A device consisting of a filament, base, and tip uses electricity to produce visible light.

Circuit:

A continuous path along which an electrical current can move.

Current:

A flow of electrons along a path.

Electricity:

An event that occurs when electrons move through or between objects or materials.

Electrons:

Tiny particles found outside the nucleus of an atom. Electrons have a negative charge.

Light energy:

A form of energy that travels in a wave.

Natural light:

Light that comes from natural sources such as sun.

Parallel circuit:

A circuit that allows electrons to follow several different paths.

Series circuit:

A circuit that directs electrons to follow a single path.