Science project


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Science project

  1. 1. Sarah Luttke Chemistry
  2. 2. Hypothesis Throughout the ages, the science world is always changing, an example is of Pluto when is was downgraded from a planet to a dwarf planet.
  3. 3. Pluto’s discoverer Clyde Tombaugh Date of discovery: February 18, 1930 Categorized as a 9th Planet in our science system.
  4. 4. International AstronomicalUnion International Astronomical Union (IAU) IAU formed a Planet Definition Committee The Planet Definition Committee consisted of Five Scientists, a Journalist, and a Science Historian. Met for two days before the Prague meeting to decide.
  5. 5. Why the IAU formed the planetcommittee? The IAU formed the Planet definition committee because the IAU had been unsuccessful in creating what defines a Planet.
  6. 6. The IAU Planet Definition 1. “Must orbit the Sun” 2. “It must be big and heavy enough to have collapsed into a spherical shape under the force of its own gravity.” 3. “It must have cleared the area around its orbital path.” (Sutherland)
  7. 7. Information About Pluto “Distance from Sun: 5,913.52 million km (3,674.66 million miles) Diameter: 2,300 km (1,430 miles) Mass: 0.0022* Earth’s mass Density: 2.03 g/cm3 Gravity: 0.06* Earth’s gravity Rotation: 6.39 days (retrograde) Axial Tilt: 122.6 Degrees(Henbest)
  8. 8. Pluto Information Axial Tilt: 122.6 Degrees Sidereal Period: 248.54 years Synodic Period: 366.73 Satellites: 1” (Mechler et al) “Pluto’s orbit is tilted up at 17 degrees to the rest Solar System.” (Henbest)
  9. 9. Hypothesis proven 76 years later Pluto is reclassified as a dwarf planet. Science is continually evolving Discoveries that were made years before are changing with new information.
  10. 10. Works Cited Information Henbest, Nigel. The Planets A Guided Tour of Our Solar System  Through The Eys Of. New York: Viking, 1992. Print. Mechler, Gary. The National Audubon Society Pocket Guide:  Planets and Their Moons. New York: Knopf, 1994. Print. Sobel, Dava. The Planets. New York: Viking, 2005. Print. Sutherland, Paul Graham. Where Did Pluto Go?:  A Beginners Guide to Understanding the "new Solar System" Pleasantville, NY: Readers Digest Association, 2009. Print. Tyson, Neil DeGrasse. The Pluto Files: The Rise and Fall  of Americas Favorite Planet.New York, NY: W.W. Norton, 2009. Print. Weintraub, David A. Is Pluto a Planet?:  A Historical Journey through the Solar System. Princeton, NJ: Princeton UP, 2007. Print.
  11. 11. Works Cited Images Clyde Tombaugh. Digital image. Clyde Tombaugh. Web. 6 May 2012.  < d=IwqzWiS0kBQl8M:&imgrefurl= ombaugh.html&docid=yxhV8hVRWBXSrM&imgurl= d/scientists/tombaugh.jpg&w=172&h=242&ei=FPWmT8vdN5CRgQfLlc2zAQ&zoom=1&iact=hc&v px=194&vpy=246&dur=441&hovh=191&hovw=135&tx=82&ty=108&sig=11221411867424227052 7&page=1&tbnh=131&tbnw=92&start=0&ndsp=23&ved=1t:429,r:0,s:0,i:102>. Pluto. Digital image. Web. 6 May 2012.  < PI8VTjLRwMM:&imgrefurl= astrology/pluto/&docid=GDfb1CmYEgj5cM&imgurl= content/uploads/2011/01/pluto.jpg&w=350&h=350&ei=iPamT- nAEYvmggekjenMAQ&zoom=1&iact=hc&vpx=657&vpy=112&dur=6856&hovh=225&hovw=225&t x=150&ty=95&sig=112214118674242270527&page=1&tbnh=135&tbnw=131&start=0&ndsp=21& ved=1t:429,r:3,s:0,i:160>. The Solar System. Digital image. Web. 6 May 2012.  < SMVI5WZlWqoM:&imgrefurl= zhY3ynKoXM&imgurl= vemT7mDJarg2gWpsrymAg&zoom=1&iact=rc&dur=0&sig=112214118674242270527&sqi=2&pag e=1&tbnh=135&tbnw=139&start=0&ndsp=12&ved=1t:429,r:11,s:0,i:168&tx=1236&ty=330>.