Understanding & Interpreting a Geologic Map


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What do the colors on a geologic map represent?

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1. On a geologic map, a very thick line will indicate a ___, while a very thin line will indicate a ___.

2. If a contact line is dotted, this tells us that:

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About This Quiz & Worksheet

There are many different types of maps, and this quiz/worksheet combination is written to review your ability to understand and interpret a geologic map. The quiz questions ask you to identify the meaning of different symbols found on a geologic map.

Quiz & Worksheet Goals

Challenge yourself to correctly answer quiz questions about the use of these symbols on a geologic map:

  • Thick lines and thin lines
  • First capitalized letter in a geologic unit
  • Colors
  • Dotted contact lines

Skills Practiced

Analyze your aptitude for using these skills during your completion of the quiz and worksheet:

  • Reading comprehension - ensure that you draw the most important information about understanding and interpreting a geologic map from the related lesson
  • Making connections - use your knowledge of geologic maps to understand the meaning of a geologic map key
  • Distinguishing differences - compare and contrast topics from the lesson, such as the meaning of thin lines and thick lines
  • Knowledge application - use your knowledge to answer questions about the usage of colors on a geologic map

Additional Learning

To learn more about this topic, you are invited to review the accompanying video lesson called Understanding & Interpreting a Geologic Map. The objectives met within the lesson include:

  • Differentiate between a geologic map and a geographic map
  • Learn the purpose of using lowercase letters when describing a geological unit
  • Describe the symbol used to identify a tilted land location