Across
- 2. eruption when molten rock called magma rises to the surface and creates an explosion.
- 4. plates theory that Earth's outer shell is divided into large slabs of rock
- 5. boundary that occurs when two tectonic plates move away from each other
- 7. rock that in its molten form issues from volcanos
- 8. boundary that occurs when two plates slide past each other, horizontally
Down
- 1. sudden and violent shaking of the ground
- 3. boundary that occurs when two or more lithospheric plates collide
- 6. core the innermost geologic layer of Earth