Learn on PengiAmplify Science (California) Grade 8Chapter 2: Investigating Potential Energy

Lesson 3: Energy Transfer

Key Idea.

Section 1

Work Transfers Energy

Key Idea

Applying force over a distance is defined as work.

When a person (or machine) pushes two repelling magnets closer together, they are performing work on the system.

Section 2

Relationship Between Work and Potential Energy (PE)

Key Idea

In a magnetic system, there is a direct, proportional relationship between the physical effort applied and the energy stored.

Input: The process begins with Work. This is the mechanical effort required to move a magnet against the direction it wants to go (e.g., forcing two repelling magnets closer together).

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 2: Investigating Potential Energy

  1. Lesson 1

    Lesson 1: Energy Conversion

  2. Lesson 2

    Lesson 2: Storing Energy in Magnetic Fields

  3. Lesson 3Current

    Lesson 3: Energy Transfer

Lesson overview

Expand to review the lesson summary and core properties.

Expand

Section 1

Work Transfers Energy

Key Idea

Applying force over a distance is defined as work.

When a person (or machine) pushes two repelling magnets closer together, they are performing work on the system.

Section 2

Relationship Between Work and Potential Energy (PE)

Key Idea

In a magnetic system, there is a direct, proportional relationship between the physical effort applied and the energy stored.

Input: The process begins with Work. This is the mechanical effort required to move a magnet against the direction it wants to go (e.g., forcing two repelling magnets closer together).

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 2: Investigating Potential Energy

  1. Lesson 1

    Lesson 1: Energy Conversion

  2. Lesson 2

    Lesson 2: Storing Energy in Magnetic Fields

  3. Lesson 3Current

    Lesson 3: Energy Transfer