Across
- 6. Toxic,radioactive material,atomic number 92
- 7. Mineral grouping
- 9. Walk on the beach, it's quartz
- 10. outer space rock,surface of the Earth
- 11. dominant terrestrial vertebrates,Triassic
- 13. Trace of organism, millions of years ago
- 16. Movement between rock blocks
- 19. Made of sÃlice(SiO2), windows,fragile
- 20. Yellow color, metal, a lot of money
Down
- 1. Tree shaped texture
- 2. Excellent material for compression,pseudo-rock
- 3. Vegetable steel, wood
- 4. Positive relief, planet surface, concave shape
- 5. Planet with life, song Michael Jackson
- 8. Cutting Stones into Natural Shapes with Tool
- 12. Material, volume changes, floor, natural
- 14. high tensile strength, construction material
- 15. It's in the rivers
- 17. See novels and soccer
- 18. Relationship between stress and strain