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Ch 3: Energy & Biochemical Cycles in Earth Systems

About This Chapter

Prepare for an upcoming exam with help from this chapter on biochemical cycles and energy in Earth systems. This comprehensive study guide is made up of video and text lessons that outline the topics you'll find on the test. Lessons are easy to follow and self-paced.

Energy & Biochemical Cycles in Earth Systems - Chapter Summary

In this chapter, our instructors present energy and biochemical cycles in Earth systems. Topics include the Earth's primary sources of external and internal energy, as well as the definition of a renewable energy source. These lessons are designed to:

  • Outline the advantages and disadvantages of fossil fuels
  • Define nuclear energy
  • Identify the different mechanisms of heat transfer
  • Discuss Earth's main energy sources and its climate system
  • Detail the process of the carbon cycle
  • Explain information related to fossil fuels, the nitrogen cycle and acid rain

When you study with our learning materials, you'll find lessons, quizzes and resources you can use to master the topics you're looking to learn. Each lesson is followed by a short quiz that provides an excellent way to check your comprehension before you move on to other topics. As you work through this chapter, feel free to reach out to one of our instructors for assistance if you need it.

8 Lessons in Chapter 3: Energy & Biochemical Cycles in Earth Systems
Test your knowledge with a 30-question chapter practice test
Earth's Primary Sources of Internal & External Energy

1. Earth's Primary Sources of Internal & External Energy

Earth has several primary sources of energy. Some of the energy is from external sources and some are from within the earth itself. In this lesson we will examine Earth's major sources of energy.

What Is a Renewable Energy Source? - Definition & Example

2. What Is a Renewable Energy Source? - Definition & Example

Right now, you are using electricity to power your computer. Most of our power comes from nonrenewable sources that can run out. In this lesson, learn about the many types of renewable energy sources that will never run out and could be used instead.

What Are Fossil Fuels? - Definition, Advantages & Disadvantages

3. What Are Fossil Fuels? - Definition, Advantages & Disadvantages

Fossil fuels are sources of energy that have developed within the earth over millions of years. Because fossil fuels - oil, natural gas, and coal - take so long to form, they are considered nonrenewable. Learn more about these fuels, including the pros and cons of using them.

What is Nuclear Energy? - Definition & Examples

4. What is Nuclear Energy? - Definition & Examples

You've probably heard of nuclear energy. But what is it? And what is the difference between fusion and fission? This lesson will answer your questions about this exciting form of energy that involves atoms and their nuclei.

Mechanisms of Heat Transfer: Conduction, Convection & Radiation

5. Mechanisms of Heat Transfer: Conduction, Convection & Radiation

There are three main ways that heat is transferred between substances or objects. In this video lesson you'll learn about each one, and identify the differences between them.

Earth's Climate System & Its Main Energy Sources

6. Earth's Climate System & Its Main Energy Sources

The earth has a primary energy source which drives the climate of our planet. This lesson covers what that energy source is, how it impacts the five physical systems of our planet, and the various ways it affects the weather and climate we experience.

What Is the Carbon Cycle? - Diagram, Process & Definition

7. What Is the Carbon Cycle? - Diagram, Process & Definition

The carbon cycle is the process by which carbon moves from the atmosphere into the Earth and its organisms and then back again. Gain a deeper understanding of how the carbon cycle works in this lesson.

The Nitrogen Cycle, Acid Rain and Fossil Fuels

8. The Nitrogen Cycle, Acid Rain and Fossil Fuels

Do you know the difference between nitrite and nitrate? Do you have any clue how all the nitrogen in the atmosphere becomes usable? If you can't answer these questions, then you need to watch this lesson on the nitrogen cycle.

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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