About This Chapter
Overview of Earth's Systems - Chapter Summary
Study this overview of Earth's systems to gain greater insight into the biogeochemical cycle, cycles of matter, weathering and much more. Our instructors offer in-depth analyses of these topics, ensuring you're able to do the following in no time:
- List and describe Earth's four major geological systems
- Define and discuss the biogeochemical cycle
- Distinguish between the nitrogen cycle and carbon cycle
- Identify and discuss factors impacting energy flow in Earth's systems
- Explain the link between deforestation, desertification and a decline in biological diversity
- Define and share causes of weathering
Resources in this chapter are accessible around-the-clock, making it easy to study the Earth's systems when it's convenient for you. Mobile features enable you to access the materials in any location with an Internet connection using your computer, smartphone or tablet. As you progress through the lessons, feel free to test your knowledge of their contents by taking short quizzes. If you need to clarify details presented in this chapter, don't hesitate to submit your questions to our experts via the Dashboard.
1. Earth's 4 Major Geological Subsystems
When we think of the Earth, we mainly think of the physical land we stand on. The Earth system is much more complex and is comprised of four major geological subsystems that interact to carry out many natural processes.
2. What is the Biogeochemical Cycle? - Definition & Explanation
Did you know that all elements are recycled over and over again on Earth? In this lesson, we'll learn about the biogeochemical cycle and explore the cycle of phosphorus as an example. Test your new knowledge at the end with a quiz.
3. Cycles of Matter: The Nitrogen Cycle and the Carbon Cycle
Matter is constantly cycled between living and nonliving parts of the environment. Processes like photosynthesis and nitrogen fixation allow the carbon and nitrogen cycles to regenerate needed substances by recycling Earth's atoms.
4. Factors Affecting Energy Flow in Earth's Systems
Factors that affect Earth's systems can occur naturally or through human induced changes. They can alter the energy flow or balance of the Earth. In this lesson, you will learn how factors like volcanoes and vegetation alter this flow.
5. Deforestation, Desertification & Declining Biological Diversity
When trees are lost due to deforestation, the result can be a drier climate and desertification or the transformation of the once fertile land to desert. Learn how deforestation and desertification can lead to a decline in biological diversity.
6. Weathering: Definition, Types, Causes & Rates
Ever wondered how erosion could create something as dramatic as the Grand Canyon? The simple answer is weathering. This lesson describes the three major types of weathering, their causes, and how weathering rates can change.
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Other chapters within the CSET Science Subtest II Earth and Space Sciences (219): Test Prep & Study Guide course
- Understanding Stars, Solar Systems & Galaxies
- Celestial Bodies of Our Solar System
- Astronomical Laws & Measurements
- Understanding Earth's Formation & Development
- Rocks & Minerals
- Tectonic Plates, Volcanoes & Earthquakes
- Understanding Water's Role on Earth
- Understanding Earth's Atmosphere, Climate & Weather
- Understanding Human Impact on Earth & Global Climate Change
- California's Natural Resources & Hazards
- CSET Science Subtest 2 Earth & Space Sciences Flashcards