1. Geologic Time February 23 rd, 2015

2. Announcements Two briefs are due by Thursday February 26 th (Friday February 27 th for Section 1) Post Test for Outcome 5: Earth History will be next week: Wednesday March 4 th for Section 2 Thursday March 5 th for Section 1 Your Research Artifacts will be DUE on the same day as your Post-Test

3. A Little Review Four Laws of Stratigraphy Law of Superposition of Strata: Oldest rock layers can be found at the bottom of an undisturbed bed

4. A Little Review Law of Cross Cutting Relationships: An intrusion/extrusion is always going to be younger than the rock it cuts through

5. A Little Review Index Fossils Two things must be true about Index Fossils: – 1: They lived for only a “short” period of time – 2: They lived across a wide geographical area (they lived almost everywhere in the world!

7. What if All of Earth History Was Played on a 24 Hour Clock?? How many hours does a normal clock show? What time did humans get here? http://hmxearthscience.com/Warehouse/geol ogy/earths_history/animations/Geologic%20T imescale%20Clock.swf http://hmxearthscience.com/Warehouse/geol ogy/earths_history/animations/Geologic%20T imescale%20Clock.swf Humans got here at 11:59 p.m. We only got here a minute ago!

9. Regents Question

10. Divisions of Time

11. Precambrian (544 mya – 4.6bya)

12. Stromatolites

13. Fossil of stromatolites

14. Paleozoic Era ( ancient )

16. Mesozoic Era (middle)

18. Cenozoic Era (recent)

20. Group AGroup BGroup CGroup DGroup E AlimatouSandeilisDaianaAntonetaReyson HenoodSharnaThanyaNathiCaroline MishaSadiaKimbyGabrielaKaterina KhadyMaishaMeganyHarold KeyzieObnielRobert Unison Reading Groups Section 1

21. Group AGroup BGroup CGroup DGroup EGroup F AnamJubayerRamziMosammatDayana PerlaIbrahimJenniferSemeVictoria SmarlynAbdullahMaridaniaKenyJunior DazeSarmadChrisHumayraKagbe YanvierAbdullahBesareKaylin Unison Reading Groups Section 2

22. Team 1Team 2Team 3Team 4Team 5 ThanyaMeganySandeilisAlimatouSharna CarolineKaterinaZohaHenoodMaisha GabrielaKimberlyKhadyDaianaSadia NathiObnielMishaKeyzieAntoneta ReysonRobertHaroldMarbelin Scarlet Responsibility Teams Section 1

23. Team 1Team 2Team 3Team 4Team 5Team 6 SmarylnRamziDajanaJenniferChrisJunior MikaulyGeovaniAnamDazeVictoriaSarmad MaridaniaAbdullah N.PerlaBesareKagbeAbdullah Z. LauraIbrahimBlendiYanvierKaylinJubayer MosammatSemeHumayra A.FranciscoHumayera Z.Sumaiya Responsibility Teams Section 2