Epicycle in Ptolemaic Astronomy: Definition & Overview


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What is Nicolaus Copernicus known for?

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1. What did Ptolemy think was in the middle of the universe?

2. In contrast to what Ptolemy thought, orbits of planets are actually....

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About This Quiz & Worksheet

This quiz and corresponding worksheet will help you gauge your understanding of planets' epicycles as was believed within the framework of Ptolemaic astronomy. Topics you'll need to know to pass the quiz include the views of Ptolemy and Copernicus about the universe.

Quiz & Worksheet Goals

Use these assessment tools to assess your knowledge of:

  • The idea that was first put forth by Copernicus that challenged Ptolemy's view of the world
  • What was at the center of the universe, according to Ptolemy
  • The correct path of planets and their orbits
  • The period when the scientific revolution occurred
  • The definition of epicycle

Skills Practiced

This worksheet and quiz will let you practice the following skills:

  • Defining key concepts - ensure that you can accurately define main phrases, such as elliptical and epicycle
  • Reading comprehension - ensure that you draw the most important information from the lesson on the epicycle in Ptolemaic astronomy
  • Interpreting information - verify that you can read information regarding how Ptolemy viewed the universe and interpret it correctly
  • Knowledge application - use your knowledge to answer questions about the Scientific Revolution

Additional Learning

To learn more about the orbits of celestial bodies according to Ptolemy, review the corresponding lesson on the Epicycle in Ptolemaic Astronomy. This lesson covers the following objectives:

  • Understand who Ptolemy was, when he lived, and what his views were
  • Define the terms deferent and epicycle
  • Recognize how the Scientific Revolution challenged previous models of the universe
  • Know who Copernicus was and what he believed
  • Understand how envisioning orbits as elliptical supplanted the use of epicycles