You are required to share at least one post per week on a topic we have studied in class. Be thoughtful and use geographic vocabulary in your posts for higher marks. Have fun and learn from this online sharing opportunity.
Monday, March 26, 2012
Green Ray
This occurs very briefly before total sunset and after sunrise. It appears as a green flash above the sun that lasts very briefly, generally only a few moments. It is caused by refraction of light in the atmosphere.
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