1. Wednesday December 12, 2012 (Quiz 14)

2. Which of the following statements best describes erosional mountains. A.Erosional mountains are formed from magma seeping through hot spots in the Earth’s crust. B.Erosional mountains are formed when tectonic plates collide at convergent boundaries. C.Erosional mountains are formed from breaks in rocky structures that converge or diverge to squeeze a layer up into cliffs. D.Erosional mountains are formed from other types of mountains that have changed over time due to environmental forces.

3. Announcements Happy Poinsettia Day!

4. Announcements I will be available after school today until 4:45.

5. Assignment Currently Open Summative or Formative? Date IssuedDate Due Date Into GradeSpeed Final Day Quiz 11S111/9 11/3012/14 Quiz 12S211/16 11/3012/14 Quiz 13S311/30 12/412/21 WS - Introduction to Continental Drift and Plate Tectonics F812/312/712/12 Video WS - Plate Tectonics, Volcanism, and Earthquakes F912/412/712/12 WS – Mountain Building F1312/1012/14

6. Recent Events in Science Asteroid That Killed the Dinosaurs Also Affected other Reptiles Read All About It! www.sciencedaily.com/releases/2012/12/12 1210160842.htm The asteroid collision widely thought to have killed the dinosaurs also led to extreme devastation among snake and lizard species, according to new research. "The asteroid event is typically thought of as affecting the dinosaurs primarily," said Nicholas R. Longrich, a postdoctoral associate with Yale's Department of Geology and Geophysics and lead author of the study. "But it basically cut this broad swath across the entire ecosystem, taking out everything. Snakes and lizards were hit extremely hard." The study was scheduled for online publication the week of Dec. 10 in the Proceedings of the National Academy of Sciences.

7. Quiz 14 After completing your Quiz, please finish the worksheet titled “Mountain Building.”