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Day 1
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Day 1

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Transcript

  • 1. Exploration: How new knowledge has led to our current view of the solar system. EQ: How has mankind’s need to explore led to our current view of the solar system?
  • 2. Warm Up – Page 170
    • What do you know about how our views of the solar system have evolved since humans first gazed up at the stars?
    • Imagine you live 5,000 years ago. When you look up at the night sky, what do you think about what you see?
  • 3. Our First Views of the Universe
    • Egyptians – need a way to predict the annual flooding of the Nile River
    • Studied the star Sirius and noticed it was in the morning sky every spring shortly before the flooding began
  • 4. Our First Views of the Universe
    • Mayans – developed a calendar that was centuries before their time
    • Observed the solstices
  • 5. Our First Views of the Universe
    • Stonehenge
      • Built in several stages
      • We don’t know who built it or exactly why
      • It does have connections to the summer and winter solstices
  • 6. Our First Views of the Solar System: Reflect
    • M: Restate the reason why Egyptians' exploration of the night sky was important.
    • I: Which of the three ancient societies would you have preferred to explore the sky with? Why?
    • U: What are the similarities in the explorations of the people who built Stonehenge and the Mayans?
    • S: Imagine you are looking up at the stars in 3,000 B.C. How can you explore them?
  • 7. Beginning to Make Sense of the Universe
    • Greeks observed the planets.
      • Called them wandering stars
      • Were aware of 5 planets – Mercury, Venus, Mars, Jupiter, and Saturn
  • 8. Beginning to Make Sense of the Universe
    • Aristotle
      • Placed the earth at the center of the solar system surrounded by 55 crystalline spheres – GEOCENTRISM
      • Earth did not move at all
      • Everything revolved around the Earth
  • 9. Beginning to Make Sense of the Universe
    • Ptolemy
      • Refined geocentric model of the solar system
      • Epicycles – smaller circles around large circles to help explain planetary motion
      • Messy way to explain the movement of planets
  • 10. Epicycles
    • Used to explain retrograde rotation – the apparent backward movement of planets
  • 11. Beginning to Make Sense of the Universe: Reflect
    • M: Summarize the contributions of Aristotle and Ptolemy to our understanding of the solar system.
    • I: How would you feel if I told you the Earth really is the center of the solar system?
    • U: Contrast Aristotle and Ptolemy’s discoveries about the solar system.
    • S: Design a NASA mission patch dedicated to studying geocentrism.
  • 12. The Revolution Begins
    • Copernicus
      • Published Revolutionibus Orbium Coelestium (On the Revolution of the Celestial Orbs) the year he died
      • Math based
      • Introduced the heliocentrism – the sun is the center of the solar system
  • 13. Copernican Solar System

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