Models Of The Universe

Question 1

Earth is a the center of the universe and everything rotates around it

Answer 1

The pythagorean model

Question 2

Who acknowledge to be the the first to assert that earth is round, and that the heavenly bodies move in circles.

Answer 2

Pythagoras

Question 3

adopted the Pythagorean view of the motion of the heavenly bodies as combinations of circular motion about Earth.

Answer 3

Plato

Question 4

Most of the time, planets move from west to east as predicted. But occasionally, they backtrack for a while; that is, they move westward before resuming their eastward motion. This pattern is called

Answer 4

Retrogade motion

Question 5

was the first to “‘save the appearances” that Plato referred to, using a series of 27 concentric spheres on which the sun, the moon,

Answer 5

Eudoxus’s model

Question 6

model included 27 celestial spheres from Eudoxus and additional “buffering” spheres leading to a Prime Mover, which rotated the outermost sphere.

Answer 6

Aristotle model

Question 7

A Greek mathematician, introduced the concept of an epicycle to explain planetary motion. This circle revolves around Earth, with the center moving around the deferent.

Answer 7

Ptolemy’s model

Question 8

Greek astronomer Philolaus suggested a pyrocentric model where planets revolve around a “fire”(sun) at the center.

Answer 8

The heliocentric model

Question 9

Claimed that earth spins daily on its axis and revolves around the sun, while only the moon orbits earth

Answer 9

Copernicus model