Across
- 5. Mohs scale is a measure of this property of rocks
- 6. type of igneous rock with large crystals
- 7. studies rocks
- 9. contains metals
- 12. core, made of LIQUID iron and nickel
- 14. hot, molten rock inside the Earth
- 15. small pieces that reflect light in rocks
- 16. core, made of SOLID iron and nickel
- 17. used for industrial extraction of metals
Down
- 1. a basalt with holes
- 2. made from cooling of lava
- 3. outermost layer of the earth
- 4. earth's solid layer which FLOWS
- 8. glass like rock, used to make surgical blades
- 10. colour of the powdered or crushed mineral
- 11. used for removing dead skin
- 13. magma on the surface of the Earth