How did Ptolemy's model of the solar system explain the apparent changes in speed and direction of the planets?(1 point)
Responses
The planets were fixed to nested spheres.
The planets were fixed to nested spheres.
The planets had a significant stellar parallax.
The planets had a significant stellar parallax.
The planets spun on epicycles.
The planets spun on epicycles.
The planets were attached to crystalline surfaces.
5 answers
The planets spun on epicycles.
Why was the geocentric model accepted for more than a thousand years?(1 point)
Responses
It correctly described the solar system.
It correctly described the solar system.
It correctly explained the motion of the planets.
It correctly explained the motion of the planets.
It correctly explained the distribution of the stars.
It correctly explained the distribution of the stars.
It was confirmed by astronomers using telescopes.
Responses
It correctly described the solar system.
It correctly described the solar system.
It correctly explained the motion of the planets.
It correctly explained the motion of the planets.
It correctly explained the distribution of the stars.
It correctly explained the distribution of the stars.
It was confirmed by astronomers using telescopes.
It correctly explained the motion of the planets.
Which of the following describe Aristotle's model of the solar system? Select the three correct answers.(2 points)
Responses
The Earth was at a point slightly offset from the center.
The Earth was at a point slightly offset from the center.
The Sun is at the center.
The Sun is at the center.
Each planet spins on an epicycle.
Each planet spins on an epicycle.
The stars are attached to the outermost sphere.
The stars are attached to the outermost sphere.
Earth is at the center.
Earth is at the center.
Each planet is attached to a crystalline sphere.
Responses
The Earth was at a point slightly offset from the center.
The Earth was at a point slightly offset from the center.
The Sun is at the center.
The Sun is at the center.
Each planet spins on an epicycle.
Each planet spins on an epicycle.
The stars are attached to the outermost sphere.
The stars are attached to the outermost sphere.
Earth is at the center.
Earth is at the center.
Each planet is attached to a crystalline sphere.
The Earth was at a point slightly offset from the center.
The Sun is at the center.
Each planet is attached to a crystalline sphere.
The Sun is at the center.
Each planet is attached to a crystalline sphere.