Across
- 2. underground water.
- 3. The ability to do work.
- 5. It helps in generating electricity and pumping
- 6. It is the sources which can be used over and over again.
- 7. Which converts electrical energy into light energy.
Down
- 1. It is the energy provided by the sun.
- 4. This fuel is used for many furnaces.
- 5. It is an example of renewable sources.