The document contains questions about geology and the geologic timescale. It includes questions about the major divisions of the geologic timescale, how it helps visualize Earth's history, whether fossils would be found from the Precambrian period, and how dinosaurs became extinct. The document also provides links to resources about the geologic timescale and Earth's history.

1. 10/6/11 A/B DayLEQ: How does the geologic timescale help us visualize the past?What is the difference between chemical and mechanical weathering?What is an unconformity?How does weathering create unconformities?A rock is worn away by water. What type of weathering is this?Copy and complete the following sentence:An intrusion is (older/younger) than the layers of rock that it cuts through

2. Track your Progress: Unit 1 Quiz B-1 = 95 -9 = 55 -17 = 15-2 = 90 -10 = 50 -18 = 10-3 = 85 -11 = 45 -19 = 5-4 = 80 -12 = 40 -5 = 75 -13 = 35-6 = 70 -14 = 30-7 = 65 -15 = 25-8 = 60 -16 = 20

3. Today’s LEQ: How does the geologic time scale help us visualize the past?By the end of today, you should be able to…1. List the four parts of the geologic time scale in order2. List the divisions of geologic time in order3. Explain how the geologic timescale helps us organize information

4. HOMEWORK DUE NEXT CLASS!!

5. Activator: “Timeline of My Life”In your notebook, draw a timeline that depicts your life from the day you were born to the present. What events did you put on your timeline?Why would eating dinner or taking a shower NOT go on your timeline?What is the purpose of a timeline?

6. Think * Pair *ShareWhat are the major divisions in our life as humans?Infancy ChildhoodAdolescence Adulthood

7. Just like the timeline of your life…What information do you think scientists might include on a timeline of earth’s history?…Scientists organized Earth’s history into this chart: the geologic time scale to help make sense of 4.6 billion years of time

8. FOCUS VOCABULARY31. Geologic Timescale32. Precambrian Era33. Paleozoic Era34. Mesozoic Era35. Cenozoic Era

9. HOT QWhich of the following events listed below would NOT be included on the geologic timeline. EXPLAIN your answer in a COMPLETE SENTENCE!Extinction of ALL mammals on Earth.Asteroid the size of North America wipes out the reptiles.A new species of rose bushes is found in California.Global Warming dries up all the oceans on Earth.Number _____ would not be included on the geologic timeline because_______________.

11. TIMESCALE:EONERAPERIODEPOCHMEMORY TRICK!!

12. MEMORY TRICK!!NEOREAPRIODEOCHEP

13. HOT Q!!Which division of the geologic time is the largest? Which is the smallest

14. BRAINPOP: GEOLOGIC TIME

15. “Where Do I Go?”6 VolunteersFirst bacteria appearedFirst animals appearedFirst dinosaurs appearedExtinction of the dinosaursFirst mammals appearedFirst humans appeared

16. Let’s See if You Were Correct

17. 90For ________% of Earth’s History, there was little to no life at all!!

18. How many million years ago did the first fishes appear?In what era did the first invertebrates appear?

19. HOT QIf earth’s history could fit into one 24 hour day, when would humans appear?

20. If the time scale were one year…PRECAMBRIAN TIME!FIRST ANIMALS!!FIRST DINOSAURS!FIRST HUMANS!

21. EOG QUESTION:WHICH OF THE FOLLOWING DIAGRAMS MOST ACCURATELY REPRESENTS THE GEOLOGIC TIMESCALE?

22. GALLERY WALK!

23. http://player.discoveryeducation.com/index.cfm?guidAssetId=496FEF10-E97C-487A-A088-2783B54C6A4E&blnFromSearch=1&productcode=DSCDiscovery Education: Earth’s Geologic HistoryStudents answer questions while watching the video

24. HOT Q: Some cartoons have shown early humans keeping dinosaurs as pets. From what you know about the geologic time scale and Earth’s History, is this possible? Why or why not?

25. Geologic Timeline COMIC STRIP!Use the Geologic Time Scale to , create a comic strip of Earth’s History. Your comic strip must include:The 4 eras of the Geologic Time Scale in orderThe years for each eraPictures to illustrate each eraOne sentence to describe each comic strip boxA minimum of 5 different comic strip boxesMajor events (such as extinctions) in Earth’s HistoryYour own NEW EON of the Geologic Time Scale (after the Cenozoic Era)Use your notes and the textbook(Section A pgs. 64-67)to help you!

26. Summarizer:Why would there be little to no fossils found in a rock layer that was formed during Precambrian time? (2-3 sentences)

27. DATE A/B DayLEQ: How does the geologic time scale help us visualize the past?What is the geologic time scale?What are the 4 divisions of the geologic time scale?Which section of geologic time is the largest?Would you expect to find plant and animal fossils from the early Precambrian period?Why or why not?

28. Who Can Tell Me……How the dinosaurs became extinctWatch this clip. As you watch, fill in the blank below:The dinosaurs became extinct because _______________________ ______________________________________________________________.http://www.youtube.com/watch?v=y4COsg8o02Q