About This Chapter
Praxis Earth and Space Sciences: Minerals and Rocks - Chapter Summary
The video lessons in this chapter can help you prepare for the Praxis Earth and Space Sciences exam by teaching you about minerals and rocks, as well as their properties. The optical properties of minerals, such as their luster, light, color and streak are examined, as are the shape of mineral crystals. Once you complete this chapter, you will have the information to:
- Explain mineral tenacity, hardness and cleavage
- Describe mineral density and specific gravity
- Share chemical classifications of silicate and non-silicate minerals
- Contrast rocks and minerals
- Identify the rock cycle and types of rocks
These lessons are taught by professional instructors who utilize examples to help illustrate the information. The self-assessment quizzes at the end of each video let you gauge your learning. The timeline tags make it easy to go back and re-watch a certain passage without having to view the video again in its entirety.
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. 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.
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Other chapters within the Praxis Earth & Space Sciences - Content Knowledge (5571): Practice & Study Guide course
- Praxis Earth & Space Sciences: Scientific Research Methods & Tools
- Praxis Earth & Space Sciences: Data Collection & Analysis
- Science Education Safety
- Praxis Earth & Space Sciences: Technology of Ocean & Space Science
- Praxis Earth & Space Sciences: Properties of Matter
- Praxis Earth & Space Sciences: Principles of Energy
- Praxis Earth & Space Sciences: Biological, Physical & Chemical Processes
- Praxis Earth & Space Sciences: Science, Technology & Society
- Praxis Earth & Space Sciences: Energy Sources
- Praxis Earth & Space Sciences: Earth Resources
- Praxis Earth & Space Sciences: Plate Tectonics
- Praxis Earth & Space Sciences: Rock Deformation and Mountain Building
- Praxis Earth & Space Sciences: Earth's Spheres and Internal Structure
- Praxis Earth & Space Sciences: Earthquakes
- Praxis Earth & Space Sciences: Volcanoes
- Praxis Earth & Space Sciences: Weathering, Soil & Waste
- Praxis Earth & Space Sciences: Earth History & Life Forms
- Praxis Earth & Space Sciences: Atmosphere & Hydrosphere
- Praxis Earth & Space Sciences: Weather Systems & Meteorology
- Praxis Earth & Space Sciences: Weather and Storms
- Praxis Earth & Space Sciences: Natural Phenomena & the Earth's Climate
- Praxis Earth & Space Sciences: Surface & Groundwater
- Praxis Earth & Space Sciences: Glaciers & Oceans
- Praxis Earth & Space Sciences: Sun-Earth-Moon System
- Praxis Earth & Space Sciences: Earth & the Solar System
- Praxis Earth & Space Sciences: Galaxies & the Universe
- Praxis Earth and Space Sciences: Content Knowledge Flashcards