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Classification of Igneous Rocks: Textures and Composition

Instructions:

Choose an answer and hit 'next'. You will receive your score and answers at the end.

question 1 of 3

Which of the following is a FALSE statement about phaneritic rocks?

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1. The texture of igneous rocks will depend greatly on:

2. Which of the following light-colored rocks contain a lot of feldspar and quartz?

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About This Quiz & Worksheet

This quiz and worksheet will test how well you understand the classification of igneous rocks and the characteristics that tell them apart.

Quiz & Worksheet Goals

In these assessments you'll be asked to:

  • List characteristics of phaneritic rocks
  • Understand why igneous rocks have different textures
  • Name the rocks that contain a lot of feldspar and quartz
  • Identify minerals found in mafic

Skills Practiced

These tools test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related earth science lesson
  • Knowledge application - use your knowledge to answer questions about the types of minerals found in different igneous rocks
  • Distinguishing differences - compare and contrast the types of igneous rocks

Additional Learning

To learn more about the types of igneous rocks and their characteristics, review the accompanying lesson titled Classification of Igneous Rock: Textures and Composition. The lesson meets these objectives:

  • Define igneous and intermediate rocks
  • Differentiate between phaneritic rocks and aphanitic rocks
  • Highlight the differences amongst felsic, mafic, and ultramafic rocks
  • Give examples of the types of igneous rocks
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