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Welcome To Class

Welcome To Class. How can fossils provide clues to the past?. Agenda. Video Geologic time scale Brochure. Video. Fill out the worksheet. Geologic Time. If time was a 30 day month Recorded human history would be .18 minutes or 10.8 seconds

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Welcome To Class

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  1. Welcome To Class How can fossils provide clues to the past?

  2. Agenda • Video • Geologic time scale • Brochure

  3. Video • Fill out the worksheet

  4. Geologic Time • If time was a 30 day month • Recorded human history would be .18 minutes or 10.8 seconds • First Homo sapiens would be .013 days or 18.72 minutes or 1123.2 seconds • Cenozoic would be .42 days or 604 minutes • Mesozoic would be 1.18 days or 1700 minutes • Paleozoic would be 1.95 days or 2808 minutes • Precambrian would 26.4 days or 38106 minutes http://www.athro.com/geo/hgfr1.html

  5. In a day… • Human history = 2.5 seconds • Home sapiens = .6 minutes • Cenozoic = 20.2 minutes • Mesozoic= 56.5 minutes • Paleozoic= 93.6 minutes • Precambrian= 1269.7 minutes

  6. Geologic Time Scale • Geologic time scale – chart that divides Earth’s history into units of time • Divisions based on geologic events and major changes in living things

  7. Geologic Time Scale Divided into eons, eras, and periods

  8. PRECAMBRIAN TIME Length– beginning of time (4.6 billion yrs) – 542 million years ago Makes up 88% of Earth’s history

  9. Precambrian Time • Major Events • Earth forms • Rocks and minerals form • Stromatolites (algae) are most common fossils

  10. PALEOZOIC ERA

  11. Paleozoic Era • Length – 542 – 251 million years ago • Major Events • Supercontinent, Pangea, formed • Shelled marine animals common • Land Plants and animals appear • Fish, amphibians, reptiles appear • Permian mass extinction

  12. Paleozoic Broken Down • Cambrian • Ordovician • Silurian • Devonian • Carboniferous • Mississippian • Pennsylvanian • Permian

  13. MESOZOIC ERA

  14. Mesozoic Era • Length – 251-65 million years ago • Age of the Dinosaurs • Major Events • Pangea broke up • Dinosaurs • First Birds • First flowers • Dinosaur extinction

  15. Mesozoic Broken Down • Periods in the Mesozoic • Triassic • Jurassic • Cretaceous

  16. CENOZOIC ERA

  17. Cenozoic Era • Length – 65 million years ago-present • Age of mammals • Major Events • Mammals appear • Continents in current places • First humans

  18. Cenozoic Broken Down • Tertiary • Paleocene • Eocene • Oligocene • Miocene • Piliocene • Quaternary • Pleistocene • Holocene

  19. Create a Travel Brochure • Pick 1 period or epoch • Include information about the environmental conditions, animals, and plants • Make it colorful and creative • You want people to travel there • Use Page 218-226

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