Across
- 1. A hot liquid that erupts from a volcano
- 4. a sudden violent shaking of the ground
- 7. A supercontinent that contained all of the Earth's continents
- 8. The very middle layer of the Earth
Down
- 2. A rock mound that erupts lava on the Earth's surface
- 3. A measurement of the size of an earthquake
- 5. Lava beneath the Earth's surface
- 6. The layer of the Earth between the core and the crust