Across
- 3. a form of energy that provides power to motors and devices that create light or heat
- 5. causing, or made in a way that causes, little or no damage to the environment and therefore able to continue for a long time
- 8. the covering that forms the top of a house, a building, vehicle, etc.
Down
- 1. relating to forms of energy that are produced using the sun, wind, etc., or from crops, rather than those using fuels such as oil or coal
- 2. (esp. of a place) acceptable or good enough
- 4. a system of vehicles, such as buses, trains, aircraft, etc. for getting from one place to another
- 6. of or from the sun, or using the energy from the sun to produce electric power
- 7. to produce light that makes an object or area bright or easy to see