This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Overview of the Solar System (6.1) - This test is on the Solar System (and solar systems), so knowing what is in our Solar System is an important first step. Terrestial Planet Geology (parts of 7.1 and 7.2) - Some important points are where does the energy come from to provide the heat to make geologically active planets, how we see the results of this activity, and what determines if a planet is geologically active or not. Formation of the Moon and Age of the Earth (from part of 6.4) - we also talked about the formation of the Moon and the age dating of the Earth and Solar System at this time.- interior heat is the primary driver of geological activity, differentiation (process by which gravity separates materials by density) and convection (process by which hot materials expand & rise and cool materials contract and fall) give the earth energy and make it geologically active. We see results of this activity through volcanoes/impact cratering/tectonics/erosion. Earth/solar system created 4.5 billion years ago. Moon formed from a planetismal the size of Mars colliding with earth making earth molten and the seeds leftover revolved around the earth and through accretion became the moon. Venus, Mars, and the Earth, with a specific focus on comparing their histories and atmospheres (parts of 7.1,7.3, 7.4, a little of 7.5) Understanding how these planet's atmospheres came to be the way they are now. How they started, how they evolved, and why they ended up very different from each other. One important part of this is knowing what the greenhouse effect is, and how it has affected the different planets. Greenhouse effect- process through which the earths greenhouse gases (water vapor/CO2/methane) trap absorb and reemit infrared radiation heating the lower surface (surface absorbs visible light and emits infrared radiation for greenhouse gases to absorb/reemit). Mars- dried up river beds/signs of erosion show that water once flowed, there is still polar caps/water ice underground. Use to have stronger greenhouse effect, due to its size the planet cooled and weakened its magnetic field causing it to lose some of its atmosphere (carbon dioxide/water vapor) to solar winds, less greenhouse gases=colder planet. Venus- has volcanism, has no erosion/no plate tectonics (thicker lithosphere than earth), has run away greenhouse effect (thick CO2 atmosphere) due to there being no liquid water (to close to sun) which makes it very hot,...
View Full Document
This note was uploaded on 03/19/2008 for the course ISP 205 taught by Professor Donahue during the Spring '08 term at Michigan State University.
- Spring '08