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Monday, December 7, 2015

Geography Lesson Pt 1 The World

For geography, we were asked to keep track of the times of sunrise and sunset for 5 weeks. Yeah, right! Instead, we used a website called sunrisesunset.com to enter our zip code for the times. The website allows you to include moon cycles as well as daylight hours. After all, time is a man-made concept. I printed four calendars:

December 2015 (present month)
December 2014 (this time last year)
June 2015 (six months ago, to compare seasons)
December 2015 for our previous zip code in Limestone, Maine 04750

Austin did a little math by finding the weekly average for every week. Then we compared our findings. Comparing the daylight hours of Maine to North Carolina was particularly interesting.

We then used youtube to find a video on why these hours are practically an hour off in the same time zone. This video is called, "Mechanisms of the seasons." 


We watched the video. Then I told Austin to be earth. I had him note where specific landmarks might be on his body and spin on a axis. He then spun around me (the sun) in an imperfect circle, "Oh, you're further away. It must be winter." It was quite interesting. We noted that he could not realistically turn 365 times for real. 


Over the next few days, we found a globe at the local library and used a paper bookmark (string would've been better) to compare the globe to maps. Austin noted that the main focus on a map was quite larger than the true size of land masses surrounding their focal point, despite their sizes and distances on the globe.


On Monday, we learned about the sun's analemma. I couldn't figure out how to read the chart until Austin showed me piece by piece. The analemma is a figure 8, with a heavy bottom. It is used to accommodate the earth's axis as well as the not-so-circular orbit of the earth around the sun. I haven't found any good instructional or explanatory videos that I felt would be understood by a pre-college student. We may learn more about this later.


We also started discussing the 6 time zones of the US. We learned that there is 15* of space between each longitudinal line - 24 hrs x 15 = 360* aka a circle known as earth. Austin and I made jokes of time travel learning about the Prime Meridian. If either of us ever becomes very wealthy, he will make sure he uses his jet to keep us alive forever lol. He certainly does understand that a calander date does not change biological aging, but boy wouldn't that be nice?! 



We're still reading, so I will be back......

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