Light Concepts

Primary

1. Light needs energy.

Intermediate

1. Light travels in a straight line until it strikes an object.
2. Light can be reflected by a mirror, refracted by a lens, or absorbed by the object.
3. Light interacts with matter by transmission (including refraction), absorption, or scattering (including reflection).
4. To see an object, light is emitted by the object or reflected from it and enters the eye.

Middle School

1. Light is reflected at an angle proportional to the angle it strikes an object.
2. Light is refracted at an angle related to the angle that it enters or leaves a medium and the density of the mediums. Color is a property of light.
3. White light has all colors. Black is the absence of light and/or color.
4. White light can be refracted to view a spectrum. Light is a form of energy that can be transfered or changed to other forms of energy.