LIGHT AND COLOR
Grade levels: can be adapted for grades 2-8.
Length of time: 30-45 minues.
Room preference: Double classroom or all-purpose room.
Equipment is located in the Lederman Science Center. Talk to
Susan Dahl to borrow this set.
- Spectrum tube power supply, gas tubes and diffraction grating glasses
- Light box with red, green, and blue translucent film
- Power chord, extension chord
- Large set of lenses
- Small concave and convex lenses
- Magnetic optics kit, includes a small laser
- Clear plastic tub, powdered milk
- Electromagnetic energy spectrum poster
- Set of red, green and blue flood lights
Where does light come from?
Use a boy and a girl to make a human demonstration of molecules and atoms.
Have students rub their hands together and notice friction equals heat.
Electromagnetic energy spectrum
Show the electromagnetic energy spectrum poster and discuss different waves students may know.
White light spectrum
Use spectrum tube power supply and hydrogen and helium gas tubes. Give students diffraction grating glasses to observe differences.
How does light travel?
Ask one or two students to assist in a demonstration of waves using a slinky.
Transparent, translucent, and opaque materials
Discuss and demonstrate the differences of how much light will pass through various materials. Use the light box to show different qualities.
Physics and chemistry of the primary colors
Show color wheels for primary pigment - electronics
Discuss televisions and computer monitors with a water drop or magnifying glass to reveal primary colors.
Show color wheel for artistic medium - crayons and paints
Show combination of red, green and blue to make dddddd light.
Bending of light
Use concave and convex lenses and give students some hands on time with the lenses.
May time permits may allow hands on time for students to use mirrors to bend light.
Use radiometer to show this.
Scattering of light
Simulate sun going through the atmospher to create a sunset by using a clear plastic tub with water and a small amount of powdered milk. Shine the flashlight through to observe the change in observed color.
Virtual and real images