Astronomy 1021 Study Guide - Gravitational Energy, Main Sequence, Exoplanet

• School: Western University
• Department: Astronomy
• Course: Astronomy 1021
• Professor: Reynold Silber

Document Summary

The reason for seasons the axis tilt of the earth. The sun"s path in the sky has special characteristics on the equinoxes and solstices **** Putting newtonian gravity and keplers law together tells us that the period/distance relation gives us the total mass of the system. Not specific lengths, just which ones in order of. Electrons in atoms are restricted to particular energy levels. There are 3 basic types of spectra: continuous, emission, and absorption. Transitions from higher to lower energy levels give a unique pattern of emission lines. A continuous spectrum spans a range across the widespread. The frost line is the dividing line between where hydrogen compounds can and cant form ice. Planets formed in the protoplanetary disk through condensations and accretion. Asteroids and comets are the leftovers from the accretion process. In radiocactive dating, some isotopes turn into other nuclei. 4 major processes that shape planetary surfaces *** impact cratering.