Ch 44: Praxis Biology & General Science: Earth and Space: Rocks and Minerals

About This Chapter

Study the differences between rocks and minerals, as well as the various types of each, as you prepare for the Praxis Biology and General Science exam. Make studying easier - watch the video lessons and take the self-assessment quizzes found in this chapter.

Praxis Biology & General Science: Earth and Space: Rocks and Minerals - Chapter Summary

With these lessons, you can refresh your knowledge of the earth and space science topics covered by the exam, including the chemical classifications of silicate and non-silicate minerals and the differences between igneous, metamorphic, and sedimentary rocks. Video instructors talk you through all the key theories, important concepts, and the vocabulary to make each lesson easy to understand and remember. Lessons in this chapter include:

  • Optical Properties of Minerals: Luster, Light Transmission, Color & Streak
  • Crystal Shape of Minerals: Forms and Types
  • Mineral Strength: Tenacity, Hardness, Cleavage & Fracture
  • Mineral Density & Specific Gravity: Definition and Properties
  • Silicate Minerals: Chemical Classifications & Examples
  • Non-silicate Minerals: Chemical Classifications & Examples
  • Rocks and Minerals: Definitions and Differences
  • Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks
  • Types of Rocks: The Three Major Rock Groups

Videos are typically no more than ten minutes long. After each video, be sure to take the self-assessment quiz to gauge your understanding of the material. Links are provided that will take you to in-depth text lessons on related chapter topics.

Praxis Biology & General Science: Objectives

The Praxis Biology & General Science exam is used to determine your readiness for teacher licensing in your subject. Please note that the exact requirements for teacher licensing vary by state.

The Biology & General Science test takes approximately two hours and consists of 120 questions, all of which are multiple choice. Earth and space science accounts for about 12 questions, or ten percent of the exam.

9 Lessons in Chapter 44: Praxis Biology & General Science: Earth and Space: Rocks and Minerals
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.

Rock Cycle: Igneous, Sedimentary, and Metamorphic Rocks

8. 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.

Types of Rocks: The Three Major Rock Groups

9. 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.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.

Other Chapters

Other chapters within the Praxis Biology and General Science: Practice and Study Guide course

Support