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Natty World
First Test
Question | Answer |
---|---|
Eccentric Orbits with Equant | Ptolemy |
Epicycles and Eccentrics | Ptolemy |
Ptolemy's observations were standard for how long? | 1,500 years |
Perfect Celestial Spheres? | Aristotle |
Violent Motion? | Aristotle |
Copernicus model? | Heliocentric |
What was used against Copernicus? | Parallax |
Galileo used what for observations? | Telescope |
How did Copernicus explain Retrograde? | 2 planets moving 2 different speeds |
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 |
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 |
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. |