Across
- 1. A group of interacting parts that form a complex whole
- 3. Parallel lines or grooves in a rock
- 5. This igneous rock texture has very large crystals
- 9. This mineral reacts with HCl acid
- 11. This igneous rock texture has very small crystals
- 12. All of Earth's water is a part of this system
- 14. The Earth layer made of an iron-nickel alloy
- 17. One tectonic plate moving underneath another
- 19. Two tectonic plates moving past each other form this type of boundary
- 20. The strong outer layer of Earth's crust
- 21. This rock type is made by intense heat and pressure
Down
- 2. The most common type of mineral
- 4. The tendency of a mineral to break along planes of weak bonding
- 6. A well-tested and widely accepted view of the scientific community
- 7. Two tectonic pates moving towards each other form this type of boundary
- 8. This mineral is used to flavor food
- 10. Two tectonic plates moving away form this type of boundary
- 13. This rock type is made of parts of other weathered rocks
- 15. This rock type is made by cooling lava or magma
- 16. This mineral has a hardness of 7
- 18. A mantle plume contacting the surface makes this