1. Solar-Powered Oven: Investigate how different designs of solar ovens affect cooking efficiency.
2. Plant Growth and Light: Explore the impact of various types of light on plant growth.
3. Volcano Eruption Model: Create a model volcano to simulate and study volcanic eruptions.
4. Water Purification: Develop a system to purify water and assess its effectiveness.
5. Rube Goldberg Machine: Construct a complex machine to perform a simple task, showcasing physics and engineering principles.
6. Effect of Music on Plants: Analyze how different music genres influence plant growth.
7. Static Electricity: Experiment with materials to generate and study static charge.
8. Effect of Temperature on Battery Life: Investigate temperature's effect on battery performance and longevity.
9. Magnetic Levitation: Build a magnetic levitation system to explore levitation principles.
10. Microbial Growth: Study conditions that impact microbial growth by collecting samples from various surfaces.