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class22 - assign a letter grade on that test by itself I...

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AST 309 The Solar System MWF 12-1 John Lacy RLM 16.332 471-1469 [email protected] Class web page: www.as.utexas.edu -> courses -> AST 309 -> class web page user: AST, pwd: 309 Marty Bitner RLM 16.312, MW 10-11 471-8275 [email protected] Steve Young RLM 9.312, Th 3-5 [email protected]
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Reading for this week Ch. 8, Mars Assignment for Wednesday: Describe with one sentence for each the three most important ideas in the chapter, and tell me something that confused you or you want to know more about. The second test is in the homework return boxes. The answers are posted with the lecture from Friday before spring break. It was harder than most of my tests, and if I were to
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Unformatted text preview: assign a letter grade on that test by itself, I would use 50+ = A, 40-49 = B, 30-39 = C Elevations on Mars red = +8 km green = mean surface level blue = -10 km Olympus Mons = +25 km Why are Mars’ hemispheres so different? Mars’ northern hemisphere is mostly flat, probably volcanic plains. Much of Mars’ southern hemisphere is highlands. It’s like the northern hemisphere is an ocean basin (without the water), and the southern hemisphere is a continent. But there is no continental drift on Mars to separate continents and ocean basins. How did Mars get to be this way?...
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