Why do we have seasons, moon phases, and eclipses?

Celestial Mechanics:  Earth, Moon and Sun 

Friday’s lesson focused on celestial mechanics or the interactions between the Earth, Sun and Moon. Did you know that the reason that we experience seasons is due to the Earth’s tilt?  In the northern hemisphere, we are actually closer to the sun in the winter than in summer.   Students demonstrated why the sunlight in the New England is weaker in the winter and stronger in the summer.  After learning about seasons, we talked about the Moon, Earth’s only natural satellite.   They also investigated the 8 phases of the Moon and learned an easy mnemonic device “DOC” to help identify between a growing (waxing) and fading (waning) moon.   Using balls as models, students demonstrated the differences between solar and lunar eclipses.  Ask your student how to tell the difference between a Waxing Crescent Moon and a Waning Crescent Moon.

Using bike tires, we discussed the effects of the moon’s gravitational pull on the earth’s daily high and low tides.

Visit this link to watch a 5 minute video about seasons. https://www.youtube.com/watch?v=DD_8Jm5pTLk

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