Learn on PengiAmplify Science (California) Grade 7Chapter 4: Science Seminar (Case Study: Liquid Oxygen)

Lesson 2: Diagnosing the Failure

Key Idea.

Section 1

Normal vs. Abnormal

Key Idea

Diagnosing a broken machine starts with establishing a baseline. In a functioning system, energy is efficiently removed, creating liquid.

Evidence from the failing machine shows a lack of liquid production. By comparing the energy readings of the broken system to the normal specifications, scientists can identify where the process is failing.

Section 2

Tracing the Energy Flaw

Key Idea

If the oxygen remains a gas, the molecules are still moving too fast. This points to a failure in energy transfer.

The machine is failing to remove enough kinetic energy from the gas. Consequently, the molecules retain too much freedom of movement, preventing molecular attraction from locking them into a liquid state.

Book overview

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Chapter 4: Science Seminar (Case Study: Liquid Oxygen)

  1. Lesson 1

    Lesson 1: The Liquid Oxygen System

  2. Lesson 2Current

    Lesson 2: Diagnosing the Failure

  3. Lesson 3

    Lesson 3: The Scientific Explanation

Lesson overview

Expand to review the lesson summary and core properties.

Expand

Section 1

Normal vs. Abnormal

Key Idea

Diagnosing a broken machine starts with establishing a baseline. In a functioning system, energy is efficiently removed, creating liquid.

Evidence from the failing machine shows a lack of liquid production. By comparing the energy readings of the broken system to the normal specifications, scientists can identify where the process is failing.

Section 2

Tracing the Energy Flaw

Key Idea

If the oxygen remains a gas, the molecules are still moving too fast. This points to a failure in energy transfer.

The machine is failing to remove enough kinetic energy from the gas. Consequently, the molecules retain too much freedom of movement, preventing molecular attraction from locking them into a liquid state.

Book overview

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

Continue this chapter

Chapter 4: Science Seminar (Case Study: Liquid Oxygen)

  1. Lesson 1

    Lesson 1: The Liquid Oxygen System

  2. Lesson 2Current

    Lesson 2: Diagnosing the Failure

  3. Lesson 3

    Lesson 3: The Scientific Explanation