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Showing results 101 to 120 of 261
Bone Stress
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In this optics activity, learners examine how polarized light can reveal stress patterns in clear plastic.
Mirrors and Images
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In this optics activity, learners explore how many objects they can see in a set of mirrors (hinged like a book) at various angles.
Up Periscope!
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This activity provides instructions for building a mirrored tube--a smaller and simpler version of a submarine's periscope--that lets you see around corners and over walls.
Shadow Puppets
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In this activity, learners will create their own simple shadow puppets, and experiment with light and shadow while playing with them.
Reflecting on Diffraction
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With a laser pointer and some household items, learners can create their own laser light show. They can explore diffuse reflection, refraction and diffraction.
Dark Adaptation
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In this activity (6th on the page), learners investigate how photoreceptors in the eye (rods and cones) "adapt" to low light conditions.
Do Plants Need Light?
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In this food science activity, learners conduct an experiment that demonstrates the importance of light to plants.
Globe at Night
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In this international citizen science activity, learners measure their night sky brightness and submit their observations into an online database.
Liquid Crystals Interact with Light!
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In this two-part activity, learners explore the properties of liquid crystals, which are responsible for why mood rings change color.
Optical Morpher
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In this amazing activity about light and reflection, learners will use a pie plate and reflective strips from a mylar balloon to try to morph their face into a friend's.
Lagging Sound
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In this group activity, learners see and hear the speed of sound. A learner designated the "gonger" hits a gong, once every second, as the rest of the group watches and listens from a distance.
Big Wave
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This is an activity about waves. Using marbles, paper clips and rubber bands, learners explore how waves behave.
Shadow Dance
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In this activity, learners experiment with shadows and light sources to understand the relationship between the angle illumination and the shadow's length.
Illuminations on Rates of Reactions
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In this activity, learners investigate the speed of chemical reactions with light sticks. Learners discover that reactions can be sped up or slowed down due to temperature changes.
Illuminating Luminescence
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In this activity, learners compare and contrast different forms of luminescence by observing how chemiluminescence, phosphorescence, and fluorescence produce or emit light.
Light Soda
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In this activity, learners sublimate dry ice and then taste the carbon dioxide gas.
Exploring Structures: Butterfly
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In this activity, learners investigate how some butterfly wings get their color.
Water Illusions: Refraction & Magnification
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Learners demonstrate how water can distort, refract and magnify light.
Transit Tracks
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In this space science activity, learners explore transits and the conditions when a transit may be seen.
Reflecting Rainbows: Decorate Your White Walls With Rainbow Colors!
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Like water drops in falling rain, a CD separates white light into all the colors that make it up.