Across
- 4. energy / Energy generated in a way that doesn't use up natural resources
- 8. / Energy from heat in Earth's core
- 10. resources / Resources that are limited and can't be replaced
- 13. / Machine that produces energy when is moved by water, wind, or stream
- 14. / Energy in the nucleus of an atom
Down
- 1. resources / Resources that can be replaced over time
- 2. / Energy from a once living material
- 3. energy / Energy from moving air
- 5. footprint / Measures how fast we consume resources and generate waste compared to how fast nature can absorb our waste and generate resources
- 6. / Energy from moving water
- 7. energy / Energy from the sun
- 9. / Source of Earth's energy
- 11. fusion / In a fusion reaction, two light nuclei merge to form a single heavier nucleus
- 12. fission / A neutron slams into a larger atom, forcing it to excite and split into two smaller atoms
- 15. factor / Anything that constrains a population's size and slows or stops it from growing