ESCI 1012- Final Exam Guide - Comprehensive Notes for the exam ( 150 pages long!)
Document Summary
Day: time it takes earth to rotate about its axis (733 mph) Year: time it takes earth to rotate around the sun (>>66,000 mph) Depends on the mass (size) and speed. The speed at the top of the atmosphere does not equal speed at impact. Collision begins with atmosphere and many small ones burn up before they reach the. There are more than a million meteoroids. They come from between mars and jupiter in the asteroid belt. Jupiter is the (cid:907)big bully(cid:908) a(cid:290)d too big which kept asteroids fro(cid:289) beco(cid:289)i(cid:290)g planets. We have never been hit by a comet. On impact, ke is converted into heat and vaporization of projectile and target. Craters tend to be circular regardless of direction of approach. Compression and rebound create central high and rim. Dust and aerosols are capable of circling the globe. On earth, craters are eroded away and covered by sediment. There is also an active plate tectonic cycle.
