About This Chapter
Earth's Geology and Structure - Chapter Summary
Our experienced instructors open this chapter with a definition of the theory of Pangaea. You'll then learn about different types of volcanic hazards and how to prevent these natural disasters from occurring. Lessons also cover earthquake aftershock and foreshock patterns, as well as the different types of destruction caused by earthquakes.
As you continue through the chapter, you'll discover the differences between rocks and minerals. Lessons will explain the three major rock groups. You'll study the optical properties of minerals, including luster, light transmission, color and streak. The chapter ends with lessons on how to determine mineral strength, density and gravity. You'll look at mineral hardness and tenacity, as well as what occurs during mineral cleavage and fracture. Concepts covered in the chapter's lessons include:
- Theory of Pangaea
- Different types of volcanic hazards
- Earthquake aftershocks and foreshocks
- Destruction caused by earthquakes
- Differences between rocks and minerals
- Three major rock groups
- Optical properties of minerals
- Mineral strength, density and gravity
These online video lessons are taught by experienced instructors with knowledge of their field. Self-assessment quizzes are included at the end of each lesson, and you may access lesson transcripts if you have any questions about the content provided. You may also access links to key terms and concepts presented in the chapter.
1. What is Pangaea? - Theory & Definition
The continents you know have existed for a long time, but not in their current locations. In fact, over 200 million years ago Pangaea broke apart by plate tectonic movement to form the continents we see today.
2. Aftershocks & Foreshocks of an Earthquake
An earthquake is not an isolated event of ground shaking. Foreshocks and aftershocks occur with most earthquakes, and in this video lesson you will learn about them and how they are part of the overall process.
3. 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.
4. 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.
5. 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.
6. 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.
7. Convergent Boundary: Definition, Facts & Examples
In this lesson, you will learn the meaning of the term 'convergent boundary' in the context of plate tectonics. A number of features and examples of convergent boundaries will be introduced. A short quiz will follow.
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Other chapters within the ILTS Science - Earth and Space Science (108): Test Practice and Study Guide course
- Scientific Inquiry and Practices
- Cell Structure
- Heredity and Evolution
- Characteristics and Life Functions of Organisms
- Organisms and the Environment
- Fundamentals of Thermodynamics
- The Atom & Matter
- Trends of the Periodic Table
- Chemical Bonds and Reactions
- Nuclear Processes
- Waves Overview
- Magnetism & Electricity
- Land, Water, and Atmospheric Systems
- Weather and Storms
- Historical Evolution of Earth
- Energy Sources & Human Impact on the Earth
- Water Systems
- Renewable Energy Resources
- Environmental Impact & Sustainability
- Planets and the Solar System
- Stars, Galaxies & the Universe
- Astronomy & Space Exploration
- ILTS Science - Earth and Space Science Flashcards