How did the Ptolemaic model explain the apparent retrograde motion of the planets?
It held that sometimes the planets moved backward along their circular orbits. B) It placed the Sun at the center so that the planets’ apparent retrograde motion was seen as the Earth passed each one in its orbit. C) It varied the motion of the celestial sphere so that it sometimes moved backward. D) It held that the planets moved along small circles that moved on larger circles around the Sun. E) It held that the planets moved along small circles that moved on larger circles around the Earth. 2) What do the structures of Stonehenge, the Templo Mayor, the Sun Dagger, and the Big Horn Medicine Wheel all have in common? A) They were all places used for religious sacrifice. B) They were all built on the orders of ancient kings. C) They all can be used as lunar calendars. D) They were all used by ancient peoples for astronomical observations. E) all of the above 3) What effect or effects would be most significant if the Moon’s orbital plane were exactly the same as the ecliptic plane? A) S
