Across
- 2. Point where an earthquake originates below the surface.
- 5. The type of mining that has the LEAST impact on the environment (of the surface).
- 6. If a mineral scratches calcite with a hardness of 3, but is scratched by apatite with a hardness of 5...what is the mineral hardness.
- 8. ____________ crust is thin and dense.
- 9. Rocks are classified into 3 groups based on their ______ (how they formed).
- 10. All are inorganic, solid, natural, crystalline, and have chemical composition.
- 12. The Metamorphic rock that shale turns into.
- 13. A visual inspection of a mineral described as metallic or nonmetallic.
- 16. ______ rocks are classified as intrusive or extrusive.
- 19. The boundary where plates move next to each other.
- 20. __________ rocks have small grains because they have cool quickly on the surface.
Down
- 1. The metamorphic rock that sandstone turns into.
- 3. Color of mineral powder when rubbed on rough surface.
- 4. The metamorphic rock that limestone turns into.
- 5. The rock type that can contain fossils.
- 6. The number of half lives that have occured if 1/16 parent isotope remains.
- 7. The boundary type where plates come together.
- 11. ________ is an organic sedimentary rock used for energy production.
- 14. The circle of active volcanoes around the Pacific Ocean.
- 15. The boundary type where plates move apart.
- 17. The broad gently sloping volcano.
- 18. fool's gold mineral name
