Across
- 3. A renewable energy source, from living or recently living plants or animals
- 4. The energy released during a nuclear fission or fusion
- 5. Wind power, form of energy conversion in which turbines convert the kinetic energy of wind into mechanical or electrical energy
- 7. Energy as an attribute of physical action or movement
- 9. Energy that emits from Earths crust
- 12. Tidal energy is a form of hydropower that converts the energy of tides into useful forms of power
Down
- 1. Energy that is created from water turning gears in a dam
- 2. Radiant energy emitted from the sun
- 5. Activity involving mental or physical effort done in order to achieve a purpose or result
- 6. A simple machine that works on a pivot, it helps lift heavy objects
- 8. The ratio of the force produced by a machine to the force applied to it
- 10. The branch of physics or technology concerned with the mechanical properties of gases
- 11. One of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism