Discovery of fire

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Across
  1. 2. Byproduct of fire
  2. 5. Material burned to create fire
  3. 6. Residue left after a fire
  4. 7. Glowing residue from a fire
  5. 8. Material used to ignite a fire
  6. 10. One of the benefits of fire
  7. 12. Energy produced by fire
  8. 14. One of the earliest uses of fire
Down
  1. 1. What remains after fire has burned out
  2. 3. Some believe Prometheus stole this from the gods
  3. 4. Visible part of a fire
  4. 5. Stone used to create sparks
  5. 9. The supposed discoverer of fire
  6. 11. Describes the temperature of fire
  7. 13. Stick used to carry fire