Measuring the Properties of Distant Galaxies


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question 1 of 3

A graph that plots orbital velocity vs. the radial distance from the galaxy's center is known as a(n):

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1. A rotation curve helps astronomers find the ___ of a galaxy.

2. These are objects, such as supernovae and supergiants, whose luminosity is known and are used to help find intergalactic distances:

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About This Quiz & Worksheet

This lesson will teach you about some of the workaround methods that scientists use to measure the properties of distant galaxies, as conventional methods are not effective at these distances, and the quiz/worksheet combo will help you test your understanding of these vital methods of measurement. The quiz questions will test you on the tools scientists use to take these measurements and what these tools can really do.

Quiz & Worksheet Goals

In these assessments, you'll be tested on:

  • Rotation curves
  • The information that a rotation curve makes available
  • Distance indicators
  • What scientists use as distance indicators

Skills Practiced

This quiz and worksheet will test your skills in the following areas:

  • Reading comprehension - ensure that you draw the most important information on measuring the properties of distant galaxies from the related lesson
  • Interpreting information - verify that you can read information regarding a type of measurement and interpret it correctly
  • Defining key concepts - ensure that you can accurately define main terms, such as distance indicators, rotation curves, and parsecs
  • Knowledge application - use your knowledge to answer questions about the measurement of properties of distant galaxies

Additional Learning

To learn more about measuring the properties of distant galaxies, review the accompanying lesson on this topic. This lesson covers the following objectives:

  • Define and understand how scientists measure distance
  • Determine the units used to measure distance
  • Define and understand how scientists measure diameter and luminosity of distant galaxies
  • Define and understand how the mass of a galaxy is measured
  • Understand the use of rotation curves