About This Chapter
MEGA Earth Science: Minerals & Rocks - Chapter Summary
Review how rocks are formed, how to measure and identify the properties of various minerals and more as you watch the videos in this chapter in preparation for the MEGA Earth Science test. The videos align with the competencies measured on the exam, and include the following information:
- Visual characteristics of minerals
- Shapes of mineral crystals
- Strength and density of minerals
- Silicate and non-silicate minerals
- How rocks and minerals are different
- Rock types and the rock cycle
- Formation of igneous rock and Bowen's reaction series
We place the experience and expertise of our instructors and subject-matter specialists at your disposal for any questions you may have. Conveniently short, easy-to-follow and fun-to-watch video lessons take you through the material quickly and painlessly, while the chapter test and lesson quizzes check for retention and mastery of the information.
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.
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.
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.
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.
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.
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.
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.
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.
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.
10. Bowen's Reaction Series: Crystallization Process & Magmatic Differentiation
Bowen's reaction series and magmatic differentiation are two ways of explaining how igneous rocks form. Learn about the continuous and discontinuous series of the Bowen's reaction series and how magmatic differentiation works in this video lesson.
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Other chapters within the MEGA Earth Science: Practice & Study Guide course
- MEGA Earth Science: Science & Engineering Practices
- MEGA Earth Science: Human Interactions with Earth Systems
- MEGA Earth Science: Earth's Spheres & Internal Structure
- MEGA Earth Science: Plate Tectonics
- MEGA Earth Science: Measuring Geological Time
- MEGA Earth Science: Energy Resources
- MEGA Earth Science: Processes of Earth's Surface
- MEGA Earth Science: Earth's Hydrosphere
- MEGA Earth Science: Ocean Systems
- MEGA Earth Science: Freshwater Systems
- MEGA Earth Science: Earth's Atmosphere
- MEGA Earth Science: Weather & Storms
- MEGA Earth Science: Climate
- MEGA Earth Science: Astronomical Objects & Processes
- MEGA Earth Science: Solar System
- MEGA Earth Science: The Sun Moon Earth System
- MEGA Earth Science: Space Exploration
- MEGA Earth Science Flashcards