Across
- 3. when excess heat causes an explosion
- 5. chemical mixtures of hydrogen and carbon
- 8. oil, coal, and natural gas
- 10. 13% of coal is used for _____
- 11. what is burned to create Biomass energy
- 13. heat from the Earth's interior
- 14. emits solar rays
- 15. compounds made from oil
- 17. when two hydrogen nuclei are forced together to create a helium nucleus
- 18. using a product wisely
- 20. biomass users' location
- 22. saving what is left; using less
- 24. a place where crude oil is burnt and separated
- 26. a source that can't be replenished in a lifespan
- 27. why nuclear fission isn't used as a source of energy
- 28. light and heat given off by the sun
- 29. spins to generate electricity
Down
- 1. heat from the Earth's interior
- 2. conversion of kinetic energy into electricity with turbines
- 4. what oil is mainly used for
- 6. when a nucleus is hit by a neutron and splits into smaller neutrons
- 7. releases water to generate electricity
- 9. what hits a nucleus to create nuclear fission
- 12. a combination of gasoline and alcohol
- 16. what coal is mainly used for
- 19. can be replenished quickly
- 21. a natural flammable source of energy
- 23. used to harbor wind electricity
- 25. Oxygen from the air and _________ from a tank to create Hydrogen fuel cells