About This Chapter
Geology Basics - Chapter Summary
This chapter on basic geology will take you through the forces that build up and break down rocks and landforms. You will see how a landform diagram can help you build a timeline of geologic events, and examine how rocks are formed and changed over time through the rock cycle.
These brief, yet interesting and informative lessons make studying easy and fun. You can work at your own pace and convenience, check your progress using the lesson quizzes and chapter test, and stay organized using the Dashboard. Easy access to our highly qualified instructors and subject matter experts ensures answers to your questions, so help is only a mouse-click away.
The lessons cover the following topics:
- Changes in landforms due to soil erosion and deposition
- Purpose and use of a landform diagram
- Internal forces: earthquakes and volcanoes
- Rocks and the rock cycle
1. Effect of Erosion and Deposition on Landforms
Landforms are constantly being broken down and reformed by the processes of weathering, erosion, and deposition. In this lesson, we explore chemical and physical weathering and how the face of the earth gets changed.
2. How a Landform Diagram Describes the Geological Progression of a Landscape
This lesson describes what a landform diagram is. We'll also discuss some basic laws of geology that can help scientists deduce both the order of events that create a landform and the geologic events that occur after a landform's formation.
3. Earthquakes and Volcanoes: Evidence of Earth's Inner Layers
The interior layers of the earth are not able to be observed directly, so scientists need to rely on other information to learn about it. S waves, P waves, and magma from volcanoes and earthquakes give a glimpse at the layers of the earth by providing data that can be built into a model of the earth.
4. 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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