1. Prelim 2 is in 2 weeks Next week’s section will be a review Assignment : send me 2 topics/ questions you want me to review – Email them to me by Sunday at 2 pm – This counts towards today’s section grade

2. Tectonics in action Over the weekend, there was a magnitude 8.8 earthquake in Chile. There have been over 150 aftershocks magnitude 5.0 or greater, including 8 of magnitude 6.0 or greater. 1 The quake originated 35km below the surface of the Earth. 2 If you would like to help, check this link: http://www.astro.cornell.edu/~babs/howtohelpchile/howtohelpchile.html 1 http://earthquake.usgs.gov/earthquakes/eqinthenews/2010/us2010tfan/#summary 2 http://earthquake.usgs.gov/earthquakes/eqinthenews/2010/us2010tfan/#details

3. http://earthquake.usgs.gov/earthquakes/aftershocks/?code=2010tfan&source=us&title=M8.8%20-%20Offshore%20Maule,%20Chile

4. Earth’s atmosphere Gas NameChemical FormulaPercent Volume NitrogenN278.08% OxygenO220.95% *WaterH2O0 to 4% ArgonAr0.93% *Carbon DioxideCO20.0360% NeonNe0.0018% HeliumHe0.0005% *MethaneCH40.00017% HydrogenH20.00005% *Nitrous OxideN2O0.00003% *OzoneO30.000004% * variable gases From http://www.physicalgeography.net/fundamentals/7a.html

5. The Greenhouse Effect http://www.fas.org/irp/imint/docs/rst/Sect16/Sect16_2.html

6. Origin of the Moon Sisters? Fission? Capture? Giant impact

7. Mercury: Caloris Basin Image from http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?page=2&gallery_id=2&image_id=149

8. Mercury’s day and year 3 days every 2 years Animations…. – Rotation and orbit: http://www.messenger-education.org/Interactives/ANIMATIONS/Orbit_Rotation/orbit_rotation_full.htm – The Sun in the sky: http://www.messenger-education.org/Interactives/ANIMATIONS/Day_On_Mercury/day_on_mercury_full.htm

9. Mercury’s interior Image from http://www.daviddarling.info/encyclopedia/M/Mercury.html

10. 2009: The first global map of Mercury! Image from http://messenger.jhuapl.edu/gallery/sciencePhotos/image.php?page=1&gallery_id=2&image_id=345

11. Venus Images from http://photojournal.jpl.nasa.gov/catalog/PIA10124, http://atmos.nmsu.edu/~nchanove/A105S04/lecture_21.html, and http://nssdc.gsfc.nasa.gov/image/planetary/venus/venusglobe.jpg VisibleUV Radar

12. The Venusian surface Images from http://www.mentallandscape.com/C_CatalogVenus.htm

13. Backup slides

14. The Moon’s interior http://www.astro.psu.edu/users/niel/astro1/slideshows/class41/slides-41.html

15. http://geophysics.ou.edu/solid_earth/notes/seismology/seismo_interior/seismo_interior.html

16. Earth’s interior, cont. P waveS wave http://geophysics.ou.edu/solid_earth/notes/seismology/seismo_interior/seismo_interior.html

17. Surface Processes Erosion Tectonics Volcanism Impacts Images from http://fireflyforest.net/firefly/2005/11/12/aerial-view-of-the-grand-canyon/, http://www.scientificamerican.com/article.cfm?id=geologists-link-the-great, http://rst.gsfc.nasa.gov/Sect18/Sect18_1.html, and http://users.forthnet.gr/ath/nikolas_c/tectonic_geoology.htm