AST101H1 Lecture Notes - Runaway Greenhouse Effect, Radiometric Dating, Carbon Cycle

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST101H1
• Professor: Michael Reid

Document Summary

Carbon cycle, feedback mechanisms, how it regulates its temperature. 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) Most of the exceptions are the result of giant impacts. Hydrogen is found in a rare metallic state deep inside jupiter and saturn.