Geology!

2. This is the largest kind of tephra
3. lower ____ means that the fluid flows faster, higher ____ means that the fluid flows slower
6. AKA a "stratovolcano", and is a funnel shaped volcano built up by layers of ash, tephra, etc.
8. The hardest crystal according to the hardness scale
9. The color of the minerals that are powdered. Observed against a white plate.
10. Hot air rises, cold air sinks
12. When the crystal/mineral breaks into fragments
13. The formation of new crust. This occurs at mid ocean ridges
17. When the crystal breaks into a somewhat organized way (ex:layers, cubes)
19. The lightest kind of tephra
20. Hawaii/the Hawaiian islands were created by this

1. the theory that Earth's outer crust is divided into several pieces
4. The plates that come together
5. This is when heat/electricity is transferred through a substance to another
7. The ___ hardness scale
11. There are 6 of these, and it's the structure of the crystal/mineral.
14. how the mineral reflects light (glitter, sparkle, sheen)
15. This kind of volcano produces liquid lava that can travel very far and erupts non-explosively
16. The plates that move away from each other.
18. Also known as "fool's gold"; crystal