Porosity: Definition, Equation, Calculation & Measurement


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Why do we multiply the porosity by 100?

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1. If the total volume of a rock is 254 cubic inches, and the volume of the void is 27 cubic inches, what is the porosity (give as a percent)?

2. A well sorted-rock has a _____ porosity than a medium-sorted rock.

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About This Quiz & Worksheet

This quiz and worksheet will test your understanding of porosity. Some of the questions in the quiz will challenge your knowledge of how to calculate porosity.

Quiz & Worksheet Goals

In the quiz and worksheet, you'll be tested on:

  • The porosity differences between a well-sorted rock and a medium-sorted rock
  • Which rock has a higher porosity than a poorly-sorted rock
  • Why we multiply porosity by 100%
  • Solving mathematical equations that involve finding the porosity percent

Skills Practiced

  • Reading comprehension - ensure that you draw the most important information given about porosity from the related lesson
  • Information recall - access the knowledge you've gained regarding how we measure and calculate porosity
  • Knowledge application - use your knowledge to answer questions about various types of rocks and their porosity

Additional Learning

Check out additional information related to porosity by reading over the lesson titled, Porosity: Definition, Equation, Calculation & Measurement. You will find these objectives in this lesson:

  • Learn in greater detail what porosity is
  • Get a better understanding of the many factors that contribute to a rock's porosity
  • Become better acquainted with the steps involved in calculating the porosity of a rock