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Showing results 1 to 15 of 15
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Why is the Sky Purple?
Source Institutions
This simple hands-on activity demonstrates why the sky appears blue on a sunny day and red during sunrise and sunset.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-060.png?itok=29EQjv90)
Mix-N-Match Light
Source Institutions
This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match.
Transparent Gelatin
Source Institutions
In this optics activity, learners explore how they can make gelatin stop light, but not stop them from seeing fruit suspended within.
The Bent Pencil
Source Institutions
In this optics activity, learners explore how light bends and affects what we see.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-742.jpg?itok=VN50_kyS)
Laser Jello
Source Institutions
In this activity, learners use gelatin as a lens to investigate the properties of laser light.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-542.png?itok=6-1rLCgr)
Make a Light Fountain
Source Institutions
In this optics activity, learners make a "light fountain" from a clear plastic bottle, flashlight, and other simple materials.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-545.jpg?itok=I4azBIJL)
Bending Light
Source Institutions
In this optics activity, learners make a lens and explore how the eye manipulates the light that enters it.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-451.jpg?itok=82k1bmzZ)
Bronx Cheer Bulb
Source Institutions
In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air throu
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-746.gif?itok=obhomAhS)
Glue Stick Sunset
Source Institutions
In this activity, learners explore why the sky is blue. Learners model the scattering of light by the atmosphere, which creates the blue sky and red sunset, using a flashlight and clear glue sticks.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-674.jpg?itok=WljRWpIg)
Colored Shadows
Source Institutions
In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-731.jpg?itok=VbHohTWF)
Light Soda
Source Institutions
In this activity, learners sublimate dry ice and then taste the carbon dioxide gas.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-347.jpg?itok=5KNlSGyV)
Seeing in the Dark
Source Institutions
In this activity (17th on the page), learners investigate why you cannot see colors in dim light.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-739.gif?itok=hxE2YntR)
Mirrorly a Window
Source Institutions
In this activity about light and reflection, learners discover that what you see is often affected by what you expect to see.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-350.gif?itok=Dl801N1I)
See It to Believe It: Visual Discrimination
Source Institutions
In this activity (12th on the page), learners investigate their ability to discriminate (see) different colors.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-003-650.jpg?itok=KtuuriaC)
Rainbow Film
Source Institutions
In this activity, learners use clear nail polish to create a beautiful iridescent pattern on black paper. Learners discover that a thin film creates iridescent, rainbow colors.