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Cards In This Set
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Concluded the earth was round
cast a curved shadow on the moon during a lunar eclipse |
Aristotle
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First to accirately calculate the earth's circumfrance
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Eratosthenes
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Star catalog of about 850 stars
predicted times of lunar eclipses |
Hipparchus
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Helionetic model of the solar system
sun is the center |
Copernicus
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Observed planets and kept an accurate orbit
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Tycho Brahe
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Used Brahe's work to formulate laws of motion
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Johannes Kepler
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Ellipse
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Oval shaped path around the sun, discovered by Kepler
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Astronomical unit
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Average distance between teh earth and sun
150 km |
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Descriptions of behavior of moving objects
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Galileo Galiliei
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First to formulate a test law of universal gravitiation
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Issac Newton
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Laws of Planetary Motion
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Law of Elipses
Law of Equal Areas Law of Periods creator: Johannes Kepler |
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Geocentric Model
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Earth is the center of the universe
the sun orbits the earth the Greeks and Talame supported it |
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Heliocentric
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Earth orbits the sun
the sun is the center of the universe Galileo, Capernicus, and Kepler supported this theory |
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Two factors that Newton showed combines to keep the planets in the eliptical orbit
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Sun's gravitational influence
inertia |
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Ptolemy's geocentric model was unabled to account for the observed retrograde motion of the planets?
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False, it was able to
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