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Unit B: Physical Science

Chapter 3: Heat, Light, and Sound

• Lesson 1: Where Does Heat Come From?
• Lesson 2: Where Does Light Come From?
• Lesson 3: How Is Sound Made?
• Lesson 4: How Are Sounds Different?

Chapter 4: Magnets

• Lesson 1: What Are Magnets?
• Lesson 2: What Is a Magnetic Field?
• Lesson 3: How Strong Is a Magnet's Force?