January 22-23
8th grade--Presentations on Radiation
We presented our slides on radiation problems and solutions. We will finish up presentations and review the concept of half-life next class then work on a lab on half life. Our books will be collected on January 24th and 25th.
7th grade--We started Astronomy off with a bang!
We viewed meteor craters on the moon, in Arizona and in Peru then debated whether or not large meteors could still impact the earth today. We then watched a video simulation of a large meteor hitting the earth and destroying all life. http://www.youtube.com/watch?v=wjk-9yJBIG0
Finally we created Astrolabes out of protractors, straws and small weights (page 3 in the astronomy textbook) then took turns shooting the altitude of different objects.
Interested students can look up Near Earth Objects at http://neo.jpl.nasa.gov/neo/
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