Physics, 11.01.2020 07:31 hbked23

Two competing models attempt to explain the motions and changing brightness of the planets: ptolemy's geocentric model and copernicus' heliocentric model.

sort the characteristics according to whether they are part of the geocentric model, the heliocentric model, or both solar system models.

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epicycles and deferents explain planetary motion.
planets move in circular orbits and with uniform motion.
the brightness of a planet increases when the planet is closest to earth.
this model is earth-centered.
this model is sun-centered.
retrograde motion is explained by the orbital speeds of planets.
retrograde motion is explained by epicycles.
epicycles and deferents explain planetary motion. selected

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geocentric:

heliocentric:

both geocentric and heliocentric:

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Two competing models attempt to explain the motions and changing brightness of the planets: ptolemy...

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