The Mass of Our Galaxy


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question 1 of 3

How do we know a lot of mass exists outside the radius of our sun's orbit?

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1. Matter that is invisible, located in the galactic corona, which gives our galaxy a lot of mass is termed:

2. The time it takes for the sun to revolve around the center of the Milky Way Galaxy is known as the:

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About This Quiz & Worksheet

The Milky Way Galaxy is massive, and this quiz/worksheet combo will help you test your understanding of its mass. You'll be assessed on your understanding of the composition of the galaxy and how its mass is calculated.

Quiz & Worksheet Goals

In these assessments you'll be tested on your understanding of:

  • Length of time the sun needs to orbit the center of the Milky Way Galaxy
  • Low-density, low-luminosity spherical distribution of matter
  • Invisible matter

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information from the related science lesson
  • Information recall - access the knowledge you've gained regarding the how we know mass exists outside the sun's orbit
  • Knowledge application - use your knowledge to answer questions about the time it takes the sun to revolve around the center of the Milky Way Galaxy

Additional Learning

To learn more about science, review the following lesson called The Mass of Our Galaxy. This lesson covers the following objectives:

  • Learn about the structure and movement of the Milky Way Galaxy
  • Identify and define key features of the Milky Way Galaxy
  • Understand how to calculate the mass of our galaxy