Across
- 4. a precious stone that is clear, used in jewelry
- 9. used as a fuel in cooking, burns very clean
- 12. also known as petroleum, pumped out of the ground, and is thick and black
- 13. a bright green precious stone used in jewelry
- 14. a heavy metal, extremely common in the Earth and used to make steel
Down
- 1. found everywhere on earth, when air rushes forward, moving large turbines to generate power
- 2. a combustible black or dark brown rock consisting mainly of carbonized plant matter, found mainly in underground deposits and widely used as fuel
- 3. a pinkish-orange metal, used for pipes and wiring
- 5. a precious shiny grayish-white metal
- 6. the most common liquid on earth, known as H2O
- 7. comes from all kinds of trees, used to make furniture and build houses
- 8. a bright, slightly orange-yellow metal, very expensive
- 10. a silvery metal used in atomic bombs and nuclear power plants
- 11. also known as sodium chloride, found in seawater
- 15. a deep red stone used in jewelry