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Today’s Plan: 7/30/10

Today’s Plan: 7/30/10. Bellwork: Discuss week/Progress (5-10 mins) Workshop on NTKs from my absence (20-30 mins) Finish work from this week/study for quiz (30-40 mins) Begin vocabulary (the rest of class) Pack/Wrap-up (last few mins of class). Self-Evaluation.

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Today’s Plan: 7/30/10

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  1. Today’s Plan: 7/30/10 • Bellwork: Discuss week/Progress (5-10 mins) • Workshop on NTKs from my absence (20-30 mins) • Finish work from this week/study for quiz (30-40 mins) • Begin vocabulary (the rest of class) • Pack/Wrap-up (last few mins of class)

  2. Self-Evaluation • Given what you know of your mid-term grade, would you say you’re performing up to your potential? • How much, on average, did you study each night? • Do you view the Homework as studying? Did you do the Homework regularly? • Did you regularly attend after school assistance? • Did you regularly re-take quizzes and correct tests? • What things would pull up a low grade the fastest? • Suggest a plan for improvement this quarter.

  3. Today’s Plan: 10/13/09 • Bellwork: Coach Book pg 135-137 and answer questions 1-4 (15 mins) • Go over Coach Book (5 mins) • Fossil Activities (40 mins) • Finish Origin of Life Notes (25 mins) • Pack/Wrap-up (last few mins of class)

  4. Today’s Plan: 10/15/08 • 3rd period: • BW: Notes on Origin of Life • Pre-lab/Lab Data Collection • Natural Selection Notes (if time) • 2nd period: Do Pre-lab (the entire period)

  5. Origin of Life Notes 1 • Scientists have hypothesized about the early earth based on data and the inferences that can be drawn from data. • What data is available about the early earth and the origin of life on the planet? • Rocks and radioactive dating • fossil record • Positions of fossils

  6. What do we think is the best explanation for early earth? • Earth was inhospitable • No free oxygen • it was hot • formed 4.6 billion years ago after a “big bang” in outer space sent swirling clouds of dust flying around. • Formed by accretion, or sticking together of dust particles as the cloud swirled • lots of volcanic activity

  7. Geologic Time Scale Chronologizes the appearance of organisms on the planet since the earth first developed. • Data for the scale comes from the fossil record and radioactive dating of fossil and rock layers. • Fossil Formation-See overhead • The law of superposition-the oldest fossils are at the bottom of the rock layers.

  8. What accounts for oddities in the Fossil record? • There are gaps in the fossil record. • Fossilization is an extremely rare event • fossils are destroyed frequently • There are fossils found in strange places, like sea fossils on mountain tops • the shapes of the continents and ocean floors are changing • There was a supercontinent called Pangea which split via plate tectonics into Laurasia and Gondwana

  9. Where did life come from? • Originally, people thought that it arose automatically-Spotaneous Generation • Mice appeared in a grain silo if left alone for a while • Redi-an Italian scientist who did the first experiment to disprove spontaneous generation • two meat containers, one covered the other not.

  10. Other experiments • Spallanzani-two flasks of microorganisms, one sealed and the other not • Pasteur-also two flasks, but with “S”-shaped necks • Both proved “Biogenesis”-the idea that living things only come from living things.

  11. But Where did Biogenesis come from? • Miller and Urey experiment showed that Oparin’s “primordial soup” could have given rise to compounds for living things. • Setup on overhead. • Endosymbiant hypothesis-protocells “swallowing “ smaller protocells and making complex cells.

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