1. Monday December 5, 2011 (Introduction to Plate Tectonics )

2. The Launch Pad Monday, 12/5/11 In which rock layer would you not find dinosaur fossils? Why?

3. Assignment Currently Open Summative or Formative Date Issued Date Due Date Into Grade Speed Last Day Activity – The Geologic Time Scale “Cheat Sheet” F411/1111/1512/212/6 Lab – The Geologic Time Scale F511/1511/18 Quiz 11S211/18 12/9 Video WS – Historical Geology – A Glimpse of the Earth’s Past F612/1 Quiz 12S312/2 12/16

4. Announcements I will be available after school today until 5:00.

5. Latest News None today

6. Introduction to Plate Tectonics

7. Figure 1.18 (left)

8. Figure 1.18 (right)

9. The Earth’s lithosphere is divided into plates, which move on top of the asthenosphere New crust is created at mid- oceanic ridges.

10. Plates move apart (divergent) and crash together (convergent) Plate tectonics – convection from the asthenosphere causes an upwelling through the lithosphere.

11. Living Rock An Introduction to Earth’s Geology Video 5 th Period Only

12. Video Greatest Discoveries Bill Nye 7 th and 8 th Periods Only

13. The Launch Pad Monday, 11/1/10 Why do modern birds show more of a similarity to modern reptiles than modern mammals show to modern reptiles? Birds branched off from reptiles much later than mammals did, thus retaining more of a similarity.

14. Continental Drift An Idea Before Its Time German scientist Alfred Wegener first proposed the continental drift hypothesis in 1915. His work was published as “The Origin of Continents and Oceans.” The continental drift hypothesis states that a supercontinent called Pangaea began breaking apart about 200 million years ago. The continents “drifted” to their present positions. Continents “broke” through the ocean crust.

15. Antonio Snider-Pellegrini (1858) Alfred Wegener’s Pangaea

16. Pangaea approximately 200 million years ago Figure 7.2

17. Continental Drift Evidence Cited by Wegener Fit of South America and Africa

18. Continental Drift Evidence Cited by Wegener Fossils match across the seas

19. Continental Drift Evidence Cited by Wegener Fossils match across the seas

20. Continental Drift Evidence Cited by Wegener Fossils match across the seas

21. Continental Drift Evidence Cited by Wegener Rock types and structures

22. Similar mountain ranges on different continents Figure 7.7