Across
- 1. magma that is thick, will not flow easily, and has a great deal of gas
- 3. proposed that continents all were once together in a supercontinent
- 6. where magma thins the crust and comes closer to the surface
- 7. large projectiles thrown through the air
- 10. molten rock under Earth's surface
- 12. large underground pool of molten rock sitting underneath Earth's surface
- 16. large cone-shaped volcano
- 19. small pieces of rock, minerals, and volcanic glass created during an eruption
- 20. magma that flows easily and does not contain much gas
- 21. baby batholith
- 22. can create explosive eruptions
- 24. an active volcanic region
- 25. a large basin like depression resulting from the explosion or collapse of the center of a volcano
- 27. wide volcanoes with gentle slopes that do not erupt explosively
- 28. large hardened magma pool
- 29. forms on land when two continental plates diverge
Down
- 2. small cone shaped volcano with steep sides
- 4. when an oceanic plate slides under another tectonic plate
- 5. colliding
- 8. circular basin or depression
- 9. molten rock above Earth's surface
- 11. sliding
- 13. dividing
- 14. series of islands that form along a convergent boundary
- 15. proposed the theory of plate tectonics
- 16. horizontal intrusion
- 17. fast-moving current of hot gas and rock that moves away from a volcano
- 18. underwater mountain range where plates diverge
- 23. vertical intrusion
- 26. the large super-continent