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26 Cards in this Set
- Front
- Back
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Two reasons why ancient people built astronomical structures.
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1) RELIGIOUS RITUAL
2) AGRICULTURAL DATES |
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The theory that everything revolves around the Earth.
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GEOCENTRIC
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Scientist who constructed the Heliocentric Model.
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COPERNICUS
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Motion in the "forward" direction.
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PROGRADE
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The theory that everything revolves around the Sun.
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HELIOCENTRIC
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Smaller orbit in the geocentric model.
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EPICYCLE
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Primary individual who devised the Geocentric Model.
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PTOLEMY
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5 celestial objects, other than stars, visible with the naked eye.
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SUN, MOON, MERCURY, VENUS, MARS, JUPITER
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Larger orbit in the geocentric model.
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DEFERENT
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"Backward" motion.
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RETROGRADE
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Real reason for retrograde motion.
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CHANGE IN ANGLES DUE TO DIFFERENT ORBIT SIZES AND THEREFORE DIFFERENT APPARENT ORBITAL SPEEDS.
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Rationale for the geocentric model.
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1) Can't feel Earth moving.
2) Apparent brightness of planets changes with distance from Earth. 3) Retrograde motions explained by dual orbits. |
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Planets closer than Earth to the Sun
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INFERIOR
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Three "proofs" of the Copernican Model
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1) ABERRATION OF STARLIGHT
2) STELLAR PARALLAX 3) SPACE PROBES |
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Rationale for the Heliocentric Model
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1) Only Moon orbits Earth.
2) Angles account for retrograde motion. 3) Stars are much further away. 4) Earth spins on its axis. |
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Evidence for Heliocentric Model provided by Galileo
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1) Jupiter has moons.
2) Venus has phases as seen from Earth. |
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Another name for the Heliocentric Model
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Copernican model
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Planets further from the Sun than Earth.
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SUPERIOR
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alignment of Stonehenge
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SUN ON SOLSTICES
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alignment of Newgrange Burial Mound
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SUN ON WINTER SOLSTICE
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alignment of Sphinx
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LEO?
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alignment of Pyramids
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ORION, CARDINAL DIRECTIONS, OSIRIS (ORION)/ISIS
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alignment of Cahokia Mounds
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CARDINAL DIRECTIONS, SUN
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alignment of Angkor Wat
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DRACO?, PRECESSION
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alignment of Caracol
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SUN, VENUS
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alignment of Medicine Wheels
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STARS, SUN ON SOLSTICE
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