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