About This Chapter
Igneous Rocks Basics - Chapter Summary
The lessons in this chapter can help you review the basics of igneous rocks, including the definition of igneous rocks and how to find them. You'll also review how magma is formed and the way igneous rocks are classified. By the end of this chapter, you'll also have developed the knowledge to do the following:
- Differentiate between volcanic and plutonic igneous rocks
- Relate what Bowen's reaction series is
- Detail the different textures of igneous rocks
- Explain the relationship between igneous rocks and tectonic plates
When you complete the lessons, take the lesson quiz to find out how much of the material you have retained. Take the quizzes online on your computer, tablet, or smartphone, or print them as worksheets for offline study. If you have questions about any of these topics, you can submit them to our instructors through your Dashboard or the Help tab of the lesson.
1. Magma: Definition & Formation
Magma is molten rock found below the earth's surface. The temperature at which a rock melts is affected by its composition, pressure and water. Learn how magma forms and how it either feeds volcanoes or cools and crystallizes into igneous rock.
2. Volcanic vs Plutonic Igneous Rocks: Definition and Differences
Volcanic and plutonic rocks are types of igneous rock. Volcanic rocks form when lava cools and solidifies on Earth, and plutonic rocks form when magma cools and solidifies below Earth. Learn about different characteristics of these igneous rocks.
3. 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.
4. Classification of Igneous Rocks: Textures and Composition
Igneous rocks can be classified by their texture and composition. Learn how texture is influenced by the cooling rate of magma and how different mineral compositions lead to different igneous rock classifications in this video lesson.
5. Locating Igneous Rocks: The Relationship Between Igneous Rocks & Tectonic Plates
Igneous rock can form where tectonic plates diverge or converge. Learn how the movement of tectonic plates can create the right conditions of the solidification of magma and the formation of igneous rocks.
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Other chapters within the NY Regents Exam - Earth Science: Test Prep & Practice course
- Earth Science & Science Basics
- Understanding Earth's Spheres & Internal Structure
- The Lithosphere
- Rocks & Minerals
- Weathering, Erosion & Wasting
- Types of Running Water
- Life Cycle of Glaciers
- The Atmosphere
- Weather and Storms
- Understanding Earthquakes
- Surface Processes and Geologic Mapping
- Earth History Overview
- Astronomy & Space Exploration
- About the NY Regents Examinations
- NY Regents Exam - Earth Science Flashcards