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Ch 13: Chapter 13: Work & Energy - Holt Physical Science With Earth & Space Science

About This Chapter

The Work & Energy chapter of this Holt Science Spectrum - Physical Science with Earth and Space Science Companion Course helps students learn the essential lessons associated with work and energy topics. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Work & Energy textbook chapter.

How It Works

  • Identify the lessons in the Holt Work & Energy chapter with which you need help.
  • Find the corresponding video lessons with this companion course chapter.
  • Watch fun videos that cover work and energy topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Chapter Topics

You'll learn all of the physical science topics covered in the textbook chapter, including:

  • The definition and characteristics of work
  • How to calculate power
  • Calculating mechanical advantage
  • Simple and compound machines
  • The transfer of energy between sources
  • The transformation of kinetic and potential energy
  • Energy efficiency and conservation
  • The law of conservation of energy
  • Gravitational potential energy
  • The operation of simple machines
  • Mechanical energy
  • First Law of Thermodynamics

Holt is a registered trademark of Holt, Rinehart and Winston, which is not affiliated with Study.com.

12 Lessons in Chapter 13: Chapter 13: Work & Energy - Holt Physical Science With Earth & Space Science
Test your knowledge with a 30-question chapter practice test
Work: Definition, Characteristics, and Examples

1. Work: Definition, Characteristics, and Examples

Pushing a wall all day may feel like work, but unless you get that wall moving you're not doing any work according to the rules of physics. In this video lesson, you'll learn how work is defined as well as how to calculate the amount of work done on an object.

Power: Definition and Mathematics

2. Power: Definition and Mathematics

Work involves moving an object with a force, but power tells us how quickly that work is done. In this lesson, you will learn about how power depends on both work and time as well as see examples of how to calculate power.

Mechanical Advantage: Definition, Calculations & Equations

3. Mechanical Advantage: Definition, Calculations & Equations

If you need to move a heavy object, a simple machine can be used to make your job easier. Learn how simple machines, like levers and pulleys, can be used to gain a mechanical advantage. See mechanical advantage equations and calculations.

Simple Machines: Lever, Inclined Plane & Pulley

4. Simple Machines: Lever, Inclined Plane & Pulley

Discover what a simple machine is and how it operates. Then learn about the mechanical advantages various simple machines such as levers, inclined planes and pulleys give us.

Understanding the Efficiency of Compound Machines

5. Understanding the Efficiency of Compound Machines

Compound machines are made up of two or more simple machines. When you combine simple machines, you increase the mechanical advantage, but might have to sacrifice some efficiency. Learn about compound machines and see examples.

What is Energy? - Definition and Significance in Nature

6. What is Energy? - Definition and Significance in Nature

This lesson describes the nature of energy and how it is transferred from one source into another. Additionally, it will describe the significance of energy in natural systems.

Kinetic Energy to Potential Energy: Relationship in Different Energy Types

7. Kinetic Energy to Potential Energy: Relationship in Different Energy Types

This video defines and describes kinetic and potential energy. You'll learn how different types of energy can be classified as potential and kinetic. You'll also find out how kinetic and potential energy are transformed.

Gravitational Potential Energy: Definition, Formula & Examples

8. Gravitational Potential Energy: Definition, Formula & Examples

In this lesson, you will learn what gravitational potential is, the equation we use to calculate it, and how to use that equation. We'll look at some real-life examples so you can see how it works. A short quiz will follow.

What is Mechanical Energy? - Definition & Examples

9. What is Mechanical Energy? - Definition & Examples

In physics, energy is how work gets done. This video describes one important type of energy, mechanical energy, and provides examples of both kinetic and potential mechanical energy.

Energy Transformation: Definition, Types & Examples

10. Energy Transformation: Definition, Types & Examples

In this lesson, you will learn about the different kinds of energy and how these types of energy can be transformed from one form to another. You will also learn about some uses of these energy transformations in everyday life.

First Law of Thermodynamics: Law of Conservation of Energy

11. 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.

Energy Conservation and Energy Efficiency: Examples and Differences

12. Energy Conservation and Energy Efficiency: Examples and Differences

Saving energy is an important topic, but energy conservation and energy efficiency are not the same thing. Learn what the difference is and some examples of both energy conservation and energy efficiency.

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

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Other Chapters

Other chapters within the Holt Science Spectrum - Physical Science with Earth and Space Science: Online Textbook Help course

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