Across
- 4. _______ is kind of igneous rock
- 6. _______ is kind of sedimentary rock
- 8. _______ is fluxing agents to form a glassy phase at low temperatures.
- 11. _______ contain at least three minerals.
- 12. _______ is one of the materials for the buildings.
- 15. _______can be found near the sea.
- 16. _______ is the solid rock that underlying loose deposits
- 17. _______ is heavy soil
- 18. _______ is a natural compounds.
- 19. _______ is the outermost layer of a planet.
- 20. _______ is an area of ground that was no natural external surface
Down
- 1. _______ is very hard,crystalline mineral composed of silicon.
- 2. _______ is hot liquid and semi-liquid
- 3. _______ is a deep natural underground cave formed by the erosion of rock
- 5. _______ is formed when molten rock cools to a solid state.
- 7. _______ is the rock that formed at near Earth's surface
- 9. _______ is a solid mass of geological materials
- 10. _______ is a metamorphic rock of sedimentary origin
- 13. _______ is the thin layer of material covering the earth's surface
- 14. _______ is formed that from other rocks that are changed
- 16. _______ is the rapid cooling of basaltic lava