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Day 2
 

Day 2

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    Day 2 Day 2 Presentation Transcript

    • 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?
    • Warm Up – Page 172
      • Summarize what we did yesterday in 3-4 sentences.
    • The Revolution Begins
      • Brahe – recorded many detailed astronomical observations – one of the first to make such detailed records
      • Kepler – used Brahe’s date to develop his laws of planetary motion – planets orbit in ellipses
    • The Revolution Begins
      • Galileo
        • first person to use a telescope to explore the night sky; he became an expert at building refracting telescopes
        • Evidence for heliocentrism
          • Jupiter – four moons that revolved around it – not Earth
          • Venus – goes through phases like the moon
          • Sun – has spots and rotates
    • The Revolution Begins
      • Newton
        • Developed a new kind of telescope to explore with – reflector
        • Wrote the Three Laws of Motion to explain the movements of the planets
        • Planets are kept in orbit around the sun by
          • Inertia – objects in motion stay in motion
          • Gravity – force of attraction between objects
    • The Revolution Begins: Reflect
      • M: What do you think were the two most important discoveries made by these astronomers?
      • I: Galileo’s findings were rejected by the Catholic Church. How would you feel if you were Galileo?
      • U: If everyone around you believes in a geocentric universe, hypothesize what their reactions would be when you explain heliocentrism to them.
      • S: What would it be like to live on Jupiter and watch four moons orbit around your planet? What explorations would you conduct?
    • Our Growing Solar System
      • Our continued need to explore has helped us learn more about the solar system and our views have changed over time because of that
    • Our Growing Solar System
      • Uranus – discovered in 1781 by William Herschel using a telescope
      • Ceres – discovered in 1801; started a big debate that led to the creation of the asteroid catergory
      • Neptune – discovered in 1846 using a telescope
    • Our Growing Solar System
      • Pluto – discovered in 1930 by Clyde Tombaugh
      • Kuiper Belt – discovered in 1992
      • As our tools become more advanced, we continue to explore and learn about our solar system
    • Our Growing Solar System: Reflection
      • M: What explorations led to Ceres no longer being considered a planet?
      • I: If you were in charge of deciding where our next unmanned space probe will go in the solar system, where would you send it?
      • U: Draw parallels between Ceres’ demotion from planet to asteroid and Pluto’s demotion from planet to dwarf planet.
      • S: Imagine your patient observations night after night lead to the discovery of a new planet. How would you announce your discovery to the world?
    • Organize the Exploration!
      • Create an illustrated timeline to organize the explorations that led to our current understanding of the solar system.