Ch 3: Energy, Electricity, Sound & Light

About This Chapter

This chapter offers a fun and engaging overview of energy, electricity, sound and light that can help you prepare for an upcoming test. Quickly boost your knowledge of these scientific concepts by exploring our bite-sized lessons, and gauge your understanding with multiple-choice quizzes.

Energy, Electricity, Sound & Light - Chapter Summary

If you need help preparing for a test that covers energy, electricity, sound and light, you've reached the right place! This chapter closely examines the definition of electricity, various forms of energy and the properties and behavior of light and sound. After reviewing our lessons, you will be able to do the following:

  • List and describe types of energy
  • Share examples of energy transfer
  • Identify and discuss types of energy conversions
  • Describe the first law of thermodynamics and explain its application
  • Discuss the relationship between electricity and magnetism
  • Outline factors that impact the speed of sound
  • Provide a definition and description of light

Each lesson in this chapter is available 24 hours a day and features a short quiz designed to assess your comprehension of key concepts. Study during the timeframes and in the locations that suit your schedule using any computer, smartphone or tablet with Internet access. As you progress through this chapter, the Dashboard traces your steps, enabling you to mark your progress and quickly revisit lessons if needed. Before taking your test, gauge your overall understanding of energy, electricity, sound and light by taking our chapter exam.

7 Lessons in Chapter 3: Energy, Electricity, Sound & Light
Test your knowledge with a 30-question chapter practice test
Energy: Definition & Types

1. Energy: Definition & Types

After completing this lesson, you will be able to explain what energy is, list various types of energy, and identify which type or types of energy are present in a situation.

Energy Transfer: Examples & Overview

2. Energy Transfer: Examples & Overview

Learn about energy and how the sun provides the energy needed to sustain life on Earth. Discover energy transfer and how energy is neither created nor destroyed, but moves from one place to another or changes from one form to another.

Types of Energy Conversions

3. Types of Energy Conversions

After completing this lesson, you will be able to explain what energy is and what we mean when we say energy is 'conserved,' and give some examples of conversions between different types of energy.

First Law of Thermodynamics: Law of Conservation of Energy

4. First Law of Thermodynamics: Law of Conservation of Energy

This video describes the first law of thermodynamics. Several examples of the application of this law are discussed. The significance of the law and its practical application are discussed as well.

Electricity & Magnetism: Definition & Relationship

5. Electricity & Magnetism: Definition & Relationship

Electricity and magnetism are two things that seem different, but actually have a lot in common. In this lesson, we'll define each of them, and then explore how they are really part of the same fundamental force of nature.

What is Sound? - Definition and Factors Affecting the Speed of Sound

6. What is Sound? - Definition and Factors Affecting the Speed of Sound

Explore the minute workings of sound waves and how they travel. We'll discuss the main factors that affect the speed of sound waves, and we'll try some mathematical problems involving the wave equation.

What is Light?

7. What is Light?

This lesson will define and describe what light is from both technical and more common-use perspectives, discuss what the different kinds of light are, and explain why it's called radiation.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.