Density Wave Theory & Spiral Galaxies


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question 1 of 3

Galaxies that have many small discontinuous spiral segments are known as:

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1. Galaxies that have two well-defined spiral arms are termed:

2. The theory that tries to explain the spiral arms of disk galaxies is the:

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About This Quiz & Worksheet

Within this quiz you will be tested on your knowledge of density wave theory. Questions will also cover different types of galaxies.

Quiz & Worksheet Goals

Prepare yourself to answer questions about:

  • Galaxies with discontinuous spiral segments
  • Spurs in a spiral galaxy
  • The spiral arms of a galaxy

Skills Practiced

In addition to testing your knowledge, this quiz helps you practice:

  • Reading comprehension - ensure that you draw the most important information from the related lesson on density wave theory
  • Interpreting information - verify that you can read information regarding the theory that attempts to explain why disk galaxies have spiral arms and interpret it correctly
  • Knowledge application - use your knowledge to answer questions about galaxies with two well-defined spiral arms

Additional Learning

Your learning doesn't have to stop here. Read the lesson that accompanies this quiz, titled Density Wave Theory & Spiral Galaxies, to learn even more about this subject. The lesson covers:

  • Why the arms of the Milky Way maintain their shape
  • The importance of density waves
  • An explanation for why galaxies have different shapes