Across
- 4. A mix of hydrocarbons like oil and sulfur in a liquid state
- 5. A nuclear reaction where a neutron hits a large nucleus and breaks it apart
- 6. Black coal containing bitumen and about 80% carbon
- 8. A brown coal that is soft and made of 60-70% carbon
- 9. Energy formed from the reactions in nuclear fuel
- 12. a clean fossil fuel that is mainly methane
- 13. A precursor to coal that is made from partially decomposed plant matter
- 14. A cylindrical device that contains nuclear fuel in a reactor
- 15. Coal with the highest energy per volume and the greatest concentration of carbon at 90%
- 16. an oil gas extraction method that uses high-pressure fluid to break rocks and leaves lots of chemicals behind
- 18. The emission of ionizing radiation
- 19. The time it takes for half the mass of a compound to be left
Down
- 1. A measurement for rate of decay
- 2. fuels from biomaterial that fossilized millions of years ago
- 3. An energy source with a finite supply like fossil fuels and nuclear fuels
- 5. Carbon that hasn't been in the atmosphere for millions of years
- 7. The element most commonly used as nuclear fuel
- 10. Nuclear fuel that can no longer generate power but is still radioactive
- 11. A graph that represents oil use and predicts that when oil use will peak
- 17. A solid fuel formed from plant matter millions of years ago