Here’s another great tutorial from Scientific American!
This project explores planetary motion using shadow drawing:
Every morning the Earth spins or rotates so that the side you are on faces the sun. As the Earth spins you see the sun come up over the eastern horizon. As the Earth keeps spinning and your day progresses, the sun seems to move across the sky. When the Earth turns so that the side you are on faces away from the sun, you see the sun disappear below the western horizon. From where you are, on the surface of the Earth, it looks like the sun is moving—but it is really the movement of our own planet that makes the sun seem to move and the shadows change.
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