Across
- 6. energy: heat energy generated and stored in the Earth.
- 8. Hydroelectricity is the term referring to electricity generated by hydropower; the production of electrical power through the use of the gravitational force of falling or flowing water.
- 12. An action to make something move.
- 13. energy: the energy released during nuclear fission or fusion, especially when used to generate electricity.
Down
- 1. the branch of physics or technology concerned with the mechanical properties of gases.
- 2. energy: a form of hydropower that converts the energy of tides into useful forms of power – mainly electricity. Although not yet widely used, tidal power has potential for future electricity generation.
- 3. the action of getting things done.
- 4. advantage: the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
- 5. One of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism.
- 7. Energy: A renewable energy source from living or recently living plant and animal materials which can be used as fuel.
- 9. a rigid bar resting on a pivot, used to help move a heavy or firmly fixed load with one end when pressure is applied to the other.
- 10. energy: Energy from wind.
- 11. energy: Energy from the sun or light.