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Why the world gets dark so fast outside the circle of the campfire.
Compare the brightness of two light sources with an oil spot on a white card.
Trace your shadow, then make it change.
Measure the efficiency of solar cells.
Model the patterns of sunlight and shadow on Earth.
Explore the influence of the Sun and Moon on our tides.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Attribution: Exploratorium Teacher Institute
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