Stuck in someone else's frames? break free!
From a distance
of 10 feet, shine a slide projector on a
see that when the ball, which represents the moon,
When the sun, moon, and earth are in such positions, a solar eclipse occurs. Now continue the revolution of the ball until it is behind the globe. Make an analogy to an eclipse of the moon or a lunar eclipse.
the three objects to find a way to explain why
A month or two in advance of a solar eclipse, draw a picture of the eastern horizon early in the morning (moonrise and sunrise). Every week on the same day, mark the location of the moon and sun on the picture.
You will see that as the week of the eclipse approaches, the setting points get closer and closer together (they will eventually coincide exactly if there is a total eclipse).
If the plotting is continued for several weeks after the eclipse, observing the evening western horizon (sunset and moonset), you will see the two paths separate.
This note of caution is repeated, for safety's sake, in other projects:
No direct observation technique for viewing the
I think the intense light of the sun (and probably other lights, too, such as lasers) burn the retina of your eyes.
The brilliant scientist says: "Direct viewing of the sun, even for a short time, can cause burns to the eye's retina. Burns will not be felt but can produce a permanent blank spot in the field of vision."
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