Energy 2

2. to move and make currents of air.
5. a wall built across a river that stops the river's flow and collects the water, especially to make a reservoir.
7. the rate between the amount of energy that is put into a machine and the amount that comes out.
9. a device that changes the voltage or other characteristic of electrical energy as it moves from one circuit to another.
10. energy stored by something because of its position.
11. a building with a roof and sides made of glass, used for growing plants that need warmth and protection.
12. the hot gas that is produced when water boils.

1. a wide, flat part on a tool or machine, used to push back water or air.
3. : the distance, named lambda, between two waves of energy.
4. a system of wires through which electricity is connected to different power stations across a region
6. a piece of thin metal thread with a layer of plastic around it, used for carrying electric current.
8. passage of electricity through a wire.