1. Light Week 3
Ask students about their preliminary knowledge regarding light

2. What is Light?
Light is an electromagnetic wave that can be seen by humans
Talk about how we can only perceive a tiny band of light;
Elaborate how light is energy

3. Light can be reflected and refracted
Reflection: bouncing light off an object
Refraction: bending light as it moves through a material
Light travels like a ball being thrown very fast (too fast to see)
Give examples of reflection (mirror) and refraction (water)

4. Transparency and Translucency
Transparent: allowing light to pass through
Translucent: allowing some light to pass through
When something is Opaque, it allows no light to pass through.
Give examples of each (clear glass, murky water, piece of paper)
Ask for more examples of each

5. Spectrums
Light Spectrum: Encompasses all possible wavelengths of light
Visible Spectrum: Encompasses only the wavelengths of light visible to the human eye
Talk about other spectrums (radio, x-ray, microwave) and their practical applications.
ROY G BIV and the transition from low to high energy

6. The Light Prism
Prism: a transparent object that can refract white light into its component colors
The component
colors are also
known as a rainbow!
Can show a clip or image of a prism’s effects
Confirm understanding of light and its components

7. Photons Photons: a tiny particle of light energy
Any light you see is a collection of photons.
Each photon has a different frequency of color.
Compare to drops of water in a cup, or other example of a sum from small parts