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 were attached to crystalline surfaces.
The planets were attached to crystalline surfaces.
The planets spun on epicycles.
The planets spun on epicycles.
Which of the following describe Aristotle's model of the solar system? Select the three correct answers.(2 points)
Responses
The Sun is at the center.
The Sun is at the center.
Each planet is attached to a crystalline sphere.
Each planet is attached to a crystalline sphere.
Each planet spins on an epicycle.
Each planet spins on an epicycle.
The Earth was at a point slightly offset from the center.
The Earth was at a point slightly offset from the center.
The stars are attached to the outermost sphere.
The stars are attached to the outermost sphere.
Earth is at the center.
The Sun is at the center.
Each planet is attached to a crystalline sphere.
The stars are attached to the outermost sphere.
Why was the geocentric model accepted for more than a thousand years?(1 point)
Responses
It correctly explained the distribution of the stars.
It correctly explained the distribution of the stars.
It was confirmed by astronomers using telescopes.
It was confirmed by astronomers using telescopes.
It correctly explained the motion of the planets.
It correctly explained the motion of the planets.
It correctly described the solar system.
It correctly explained the motion of the planets.
The correct answer is: The planets spun on epicycles.
The correct answer is, "The planets spun on epicycles."
Ptolemy's model of the solar system explained the apparent changes in speed and direction of the planets by proposing that each planet moved on a small circular path called an "epicycle." The epicycle itself moved along a larger circle called a "deferent." This combination of motions created the observed changes in speed and direction of the planets as seen from Earth.
To arrive at this answer, you can study Ptolemy's model of the solar system and its details. Understanding the concept of epicycles and how they explain the observed planetary motions is crucial in answering this question correctly. Reading relevant literature or studying astronomy textbooks can provide further insights into Ptolemy's model and the principles behind it.