Ast101 Tutorial - November 7.pdf

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University of Toronto St. George
Astronomy & Astrophysics
Michael Reid

AST101: The Sun and its Neighbours Tutorial 1602 Read questions really carefully!!! Carbon cycle, feedback mechanisms, how it regulates its temperature Absorption and emission spectra Know the radioactivity plot Why Venus is different from earth? - runaway greenhouse effect - There is one star in our solar system - Absorption and emission lines are features in an object's spectrum that can tell us about its chemical composition - the presence of many craters can tell us that the surface of a planet is likely very old - we can use this type of dating to determine the age of a rock: radiometric dating - Uranus and Venus rotate in ways that do not follow the general patterns of motion for most planets in the solar system - this ratio is a good indicator of how quickly a planet will cool off: surface area to volume ratio (large = takes less time to cool, small ratio = takes longer to cool) - according to the theory of solar system formation, why are there some exceptions to the general rules and patterns that we observe in the solar system? - most of the excep
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