Across
- 3. the process of collecting and reusing old materials
- 4. machine for converting mechanical energy into electricity
- 5. a negatively charged subatomic particle
- 8. a complete circular path that electricity flows through
- 9. a flexible metallic conductor
- 10. the capacity for doing work also in many different forms
Down
- 1. a group of materials, either synthetic or naturally occurring
- 2. a way of generating electricity
- 6. and important form of energy in positive and negative forms
- 7. meeting our own needs without compromising the ability of future generations to meet their own needs