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Ch 14: Praxis Earth & Space Sciences: Minerals and Rocks

About This Chapter

Learn about the properties of minerals and rocks through this chapter's lessons. The videos and quizzes can aid you in preparing for the Praxis Earth and Space Sciences exams.

Praxis Earth and Space Sciences: Minerals and Rocks - Chapter Summary

The video lessons in this chapter will help you prepare for the Praxis Earth and Space Sciences exam by teaching you about minerals and rocks, including how they differ. The physical properties of minerals, such as their luster, shapes and strength, are explored, as are the types of rocks and how they were formed. When you have viewed all the lessons, you will be familiar with the following:

  • Optical properties of minerals, such as color, light transmission and luster
  • Forms and types of crystal shapes in minerals
  • Mineral tenacity, hardness and cleavage
  • Chemical classifications of silicate and non-silicate minerals
  • Three major rock groups

These lessons are taught by professional instructors who often utilize examples to make their points. The self-assessment quizzes at the end of each video let you gauge your learning. The format makes it easy to go back and re-watch a certain passage without having to view the video again in its entirety.

Objectives of the Praxis Earth and Space Sciences: Minerals and Rocks Course

In many states, applicants for teacher certification must pass the Praxis exam in the subject they wish to teach. The Praxis Earth and Space Sciences exam contains 100 multiple-choice questions. The exam is available in paper and in a computer formats. It contains six sections, and the material taught in this chapter is in section III, Earth Materials and Surface Processes. That section, with 23-27 questions, comprises 23-27% of the total test.

9 Lessons in Chapter 14: Praxis Earth & Space Sciences: Minerals and Rocks
Test your knowledge with a 30-question chapter practice test
Optical Properties of Minerals: Luster, Light Transmission, Color & Streak

1. Optical Properties of Minerals: Luster, Light Transmission, Color & Streak

Minerals are conveniently identified based on their physical properties. These properties include luster, ability to transmit light, color and streak. This lesson will describe each of these properties and examples of each.

Crystal Shape of Minerals: Forms and Types

2. Crystal Shape of Minerals: Forms and Types

Did you know that the term crystal can have different meanings in addition to something pretty to look at? A crystal can refer to a regular pattern of molecules within a mineral or the shapes at a macroscopic level. This is also known as the crystal habit.

Mineral Strength: Tenacity, Hardness, Cleavage & Fracture

3. Mineral Strength: Tenacity, Hardness, Cleavage & Fracture

What does it mean to say that one mineral is stronger than another? This lesson will explore different minerals to identify and describe mineral strength in terms of tenacity, hardness, cleavage and fracture.

Mineral Density & Specific Gravity: Definition and Properties

4. Mineral Density & Specific Gravity: Definition and Properties

Mineral density and specific gravity are similar properties used by mineralologists to identify minerals. This lesson describes a common practice used to determine density and specific gravity.

Silicate Minerals: Chemical Classifications & Examples

5. Silicate Minerals: Chemical Classifications & Examples

Silicate minerals make up the bulk of the earth's crust. All silicates are made of the same building block, the silicon-oxygen tetrahedron. This lesson describes the major silicate minerals including feldspars and quartz.

Non-silicate Minerals: Chemical Classifications & Examples

6. Non-silicate Minerals: Chemical Classifications & Examples

While most minerals are silicates, many non-silicate minerals are found in the earth's crust and are important as well. This lesson will use examples and describe the three major groups of non-silicate minerals, including carbonates, halides and sulfates.

Rocks and Minerals: Definitions and Differences

7. Rocks and Minerals: Definitions and Differences

Can you tell the difference between a rock and a mineral? What makes a mineral so much different from a rock? Explore these questions in depth, and learn how we classify rocks and minerals.

Types of Rocks: The Three Major Rock Groups

8. Types of Rocks: The Three Major Rock Groups

Did you know that lava is molten rock that reaches the earth's surface? Furthermore, did you know that rocks exist in three general forms: igneous, sedimentary and metamorphic? This lesson describes these rock types and examples of each.

Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks

9. Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks

In this lesson, we will discuss the three main types of rocks and how they are formed. The lesson also gives an introduction into how matter locked in rocks can be cycled through the earth.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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