Across
- 3. Strength. Force. Energy.
- 5. Machine. It converts heat to force and movement.
- 8. burning dead plants despite the deforestation.
- 9. energy relate to heat inside the Earth.
- 10. Biomass/ Hydraulic/Wind energy/photovoltaic/geothermal
- 12. water energy
Down
- 1. Machine. Gadget.
- 2. Sustainable resources.
- 4. MAchine. It makes electricity.
- 6. Fuel/oil/gas/coal/uranium/nuclear/atomic.
- 7. solar energy thanks to solar panels. It uses the sunlight.
- 11. Fisic work.