Ch 12: Weathering, Erosion & Soil

About This Chapter

Watch these lessons to refresh your knowledge of chemical and mechanical weathering and factors that affect weathering. Review soil erosion, how soil is formed and types of wasting.

Weathering, Erosion & Soil - Chapter Summary

In our video lessons, you can review information on chemical and mechanical weathering, including the processes and the factors that influence the speed at which it occurs. You'll look at causes of soil erosion and see what soil is made of and how it is formed. After completing this chapter, you should have a better understanding of:

  • Process and types of mechanical and chemical weathering
  • Influences on the rate of weathering
  • Causes of soil erosion
  • The composition and formation of soil
  • Types of wasting

Our expert instructors have included many examples in these brief, engaging study sessions. Complete the study process by taking the quizzes at the end of each lesson. It's easy to locate particular passages for additional review in the videos by using our convenient timeline tags, and, if you have more questions, the instructors are happy to help out.

7 Lessons in Chapter 12: Weathering, Erosion & Soil
Test your knowledge with a 30-question chapter practice test
Mechanical Weathering: Definition, Process, Types & Examples

1. Mechanical Weathering: Definition, Process, Types & Examples

Over time, the forces of the natural environment cause rocks to physically break down in a process called mechanical weathering. Learn how factors, such as wind, water and temperature fluctuations lead to mechanical weathering.

What is Chemical Weathering? - Definition, Process & Examples

2. What is Chemical Weathering? - Definition, Process & Examples

Chemical weathering is what happens when rocks are broken down and chemically altered. Learn about the different types of chemical weathering, including hydrolysis, oxidation, carbonation, acid rain and acids produced by lichens.

Factors that Affect the Rate of Weathering

3. Factors that Affect the Rate of Weathering

Weathering is the process that breaks down rocks into smaller pieces. The rate at which rock weathers depends on certain factors. Learn how factors, such as exposure to the atmosphere, the composition of rock and climate affect the rate of weathering.

What is Soil Erosion? - Definition and Causes

4. What is Soil Erosion? - Definition and Causes

With soil erosion, the top layer of soil is worn away due to factors such as water, wind and tillage of farmland. Learn about soil erosion and how natural elements and human activities break up and transport soil.

The Formation and Composition of Soil: Definition and Factors

5. The Formation and Composition of Soil: Definition and Factors

In this video lesson you will learn how soil is formed and what it is made of. You will also learn about how soil is classified and distributed in layers underground.

Soil Profile: Definition, Development & Types

6. Soil Profile: Definition, Development & Types

Explore the characteristics of soil profiles, their horizons and how they develop. Then you can use this knowledge to help you determine the conditions under which the soil developed and understand the history of the surrounding landscape.

Types of Wasting: Slump, Rockslide, Debris Flow & Earthflow

7. Types of Wasting: Slump, Rockslide, Debris Flow & Earthflow

Mass wasting is a type of erosion that results in the mass movement of rock, soil and debris down a slope. Learn about the different types of mass wasting, including slumps, rockslides, debris flows and earthflows.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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