Across
- 3. energy stored in fuel and food
- 4. energy produced from fan
- 8. a way of heat transfer through solids
- 10. main source of energies
- 11. a form of energy transfers from hot object to the cold one
- 12. a stored energy in object
- 13. a way of heat transfer from the sun to the earth
Down
- 1. sum of potential and kinetic energy
- 2. energy produced from simple electric cell
- 5. a way of heat transfer through water
- 6. energy produced from electric lamp
- 7. ability to do work
- 9. force by distance