Weekly
Essentials
Question of the Week:
Your Second Bonus Point Challenge.
In class we talked about some measurements that Aristarchus and Eratosthenes made, but not really about who they were. Find something else out about these two Ancients and E-mail your answer no later than 5 p.m. on Friday, September 5. Correct answers earn 10 Bonus Points.
Answer to Last Week's Challenge.
Mars was 34.65 million miles (55.76 million km) away at closest approach. This information was in the article cited on the Planet Psi home page and also on the front page of Thursday's Arkansas Democrat-Gazette.
To convert to AU as requested:
(34.65 million mi) x (1 AU/ 93 million mi) = .373 AU
Those who answered got it right. Congratulations!
THE QUESTION: On August 27, how far away in AU will Mars be from Earth?
Another Bonus Opportunity,
And a Great Way
To View the Starry Night.
Attend an observing night or a planetarium show run by Dr. Austin. There will be a sign-in sheet for my class there. You can find the specific dates and times on the Physics and Astronomy Department's Astronomy page.
More Ways to Earn Bonus Points (BP)
1. Come to class and hope I take attendance (5 BP).
3. Take online quizzes that can be found on the textbook website and submit results to me following the directions on the site. I will count one submission per student per chapter or section. (1 BP for each correct answer.) Quizzes for a particular chapter must have been taken before the test over that material or they won't count.
Remember, 100 BP = 1% added to final grade (e.g., 140 BP = 1.4%).
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