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| Energy Conversions |
| Chapter 1: What happened to the electrical system the night of the blackout? |
| Chapter 2: What makes the devices in Ergstown output or fail to output energy? |
| Chapter 3: Where does the electrical energy for the devices in Ergstown come from? |
| Chapter 4: How does energy get to the devices all over Ergstown? |
| Vision and Light |
| Chapter 1: How does a Tokay gecko get information about its environment? |
| Chapter 2: How does light allow a Tokay gecko to see its prey? |
| Chapter 3: How does a Tokay gecko know that it is looking at its prey? |
| Chapter 4: How could more light at night make it hard for a Tokay gecko to see its prey? |
| Chapter 5: How do our senses help us understand our environment? |
| Earth’s Features |
| Chapter 1: How did the fossil get inside the rocky outcrop? |
| Chapter 2: What was the environment of Desert Rocks National Park like in the past? |
| Chapter 3: What is the order of the past environments of Desert Rocks National Park? |
| Chapter 4: Why did more rock layers get exposed in Desert Canyon than Keller’s Canyon? |
| Waves, Energy, and Information |
| Chapter 1: How does a mother dolphin communicate with her calf across a distance? |
| Chapter 2: How does sound energy travel through water from a mother dolphin to her calf? |
| Chapter 3: How does a dolphin calf know which call is his mother’s call? |
| Chapter 4: How can humans use patterns to communicate? |