Question

Which is a correct statement about Aristotle's and Ptolemy's models of the solar system?(1 point)
Responses

Ptolemy's model involved epicycles moving along perfect circles.
Ptolemy's model involved epicycles moving along perfect circles.

Aristotle's model involved epicycles moving within crystalline spheres.
Aristotle's model involved epicycles moving within crystalline spheres.

Ptolemy's model was never useful because it was incorrect.
Ptolemy's model was never useful because it was incorrect.

Aristotle's model put the Sun at the center.

Answer 1

The correct statement is:

**Ptolemy's model involved epicycles moving along perfect circles.**

Ptolemy's geocentric model included the concept of epicycles, which were small circles along which planets moved while simultaneously orbiting the Earth in larger circular paths (deferents). Aristotle's model also placed the Earth at the center and did not incorporate the idea of epicycles as extensively as Ptolemy's model. Additionally, Ptolemy's model, while incorrect by modern standards, was useful for a long time in predicting the positions of celestial bodies. Aristotle's model did not have the Sun at the center; it too was geocentric, with the Earth at the center of the universe.