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First Test

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Question
Answer
Eccentric Orbits with Equant   Ptolemy  
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Epicycles and Eccentrics   Ptolemy  
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Ptolemy's observations were standard for how long?   1,500 years  
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Perfect Celestial Spheres?   Aristotle  
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Violent Motion?   Aristotle  
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Copernicus model?   Heliocentric  
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What was used against Copernicus?   Parallax  
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Galileo used what for observations?   Telescope  
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How did Copernicus explain Retrograde?   2 planets moving 2 different speeds  
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Indirect Vs. Direct observations (Galileo)   Indirect: celestial spheres aren't perfect, Craters on the Moon, Rings/Ears of Saturn, Earth Leaves the Moon Behind Direct: Phases of Venus  
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Inclined Plane   Galileo's attempt to measure free fall. Used bells and a pendulum on the incline to time the rate of acceleration. Found that there is a constant rate of acceleration no matter what the mass is. The speed at bottom is same no matter angle  
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Inertia   Galileo - Proved by dropping ball down two angled ramps, ball returns to the same height no matter the distance. Just takes longer. Relates to earths rotation.  
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