Across
- 2. 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.
- 4. measure of energy transfer that occurs when an object is moved over a distance by an external force at least part of which is applied in the direction of the displacement.
- 5. radiant energy emitted by the sun.
- 7. the branch of physics or technology concerned with the mechanical properties of gases.
- 8. the ratio of the force produced by a machine to the force applied to it, used in assessing the performance of a machine.
- 11. is an industry term for getting energy by burning Organic material that comes from plants and animals.
- 12. one of a set of toothed wheels that work together to alter the relation between the speed of a driving mechanism (such as the engine of a vehicle or the crank of a bicycle) and the speed of the driven parts (the wheels).
- 13. strength or energy as an attribute of physical action or movement.
Down
- 1. is a form of hydropower that converts the energy of tides into useful forms of power
- 3. Using the power of water currents to generate electric power.
- 6. is renewable, clean power derived from the thermal energy in earth.
- 9. the energy released during nuclear fission or fusion, especially when used to generate electricity.
- 10. wind is used to generate electricity.