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Fall wk 9 – Mon.29.Nov.04

Fall wk 9 – Mon.29.Nov.04. Welcome, roll, questions, announcements Review our work this quarter Looking ahead – next quarter Portfolio and self-eval workshop Looking ahead – this week. Energy Systems, EJZ. Seminar motivates science learning. Questions/problems: Are we running out of oil?

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Fall wk 9 – Mon.29.Nov.04

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  1. Fall wk 9 – Mon.29.Nov.04 • Welcome, roll, questions, announcements • Review our work this quarter • Looking ahead – next quarter • Portfolio and self-eval workshop • Looking ahead – this week Energy Systems, EJZ

  2. Seminar motivates science learning Questions/problems: • Are we running out of oil? • Are carbon-based fuels hurting health and environment? • Are greenhouse gases warming the Earth? Solutions? • Alternate fuels for cars; mass transport systems • Nuclear or renewables for electricity • H fuel cells?

  3. Energy and Power What types of energy have we learned about? Energy transformations Ex: Sun  warm Earth’s water  weather  storms, wind power  electricity  toaster oven Energy systems Ex: LNG to Evergreen  burn in boilers  steam  heat rooms  relaxed or alert students  learning Equilibria and oscillations Equilibria where F=0 or U=flat. Countless natural systems oscillate in approximate U ~ x2 wells. Energy comparisons

  4. Energy comparisons

  5. Energy data http://hyperphysics.phy-astr.gsu.edu/hbase/gaseng.html

  6. Calculus facilitates richer analyses Three basic approaches to math problems: • Graphing (sketching relationships) • Numerical approximations (calculators & computers) • Analysis: exact solutions (algebra, trig, calculus) Differentiation: • Slope = derivative = rate of change • Calculus invented for physics, e.g. variable forces • Polynomials: Trig:

  7. Your research projects go deeper In a series of workshops, independently, and with your team, you have by now: • Articulated a question you want to investigate • Proposed several different hypotheses to possibly answer your question • Researched articles and books on your question • Planned how to test yourhypotheses Next quarter, you will carry out your research.

  8. Research presentations tomorrow

  9. Looking ahead – next quarter Electromagnetism: • How is electrical power generated and transmitted? • Light, spectra, and quantum mechanics Sun, Earth, and Climate: • Earth’s climate and weather • Effects of solar storms on Earth • Role of the Sun in climate change We can use calculus to do more realistic physics now!

  10. Calculus in winter quarter Using differentiation: • Optimization: what is the most efficient relationship? • Exponentials and logs: calculating changes in growth • Electromagnetism satisfies wave equation! (Maxwell) Integration: • Inverse of differentiation (Ex: velocityacceleration) • Calculate totals for changing phenomena • Electromagnetism: Changing magnetic fields create electric fields (induction)

  11. Portfolio and self-eval workshop Let’s look at the guidelines linked to our homepage, and the pink worksheet Your portfolio: sections and paragraphs Your self-evaluation • Start with your eval prep sheet • Integrate with your paragraphs • Choose one or two good examples to DEMONSTRATE your learning

  12. Looking ahead – this week Tuesday: • Research presentations Wednesday: • Post your research exam Q on WebX Thursday: • Homework due, questions answered • Get your final exam in class • Potluck? Friday: written exams due by 2:00 Next Monday: inQsit ESfinalQuiz due by 10 am

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