Across
- 4. a body of rock that holds groundwater
- 6. a metamorphic rock derived from shale
- 7. a large depression formed when a volcano erupts and collapses
- 10. matter left behind by a moving glacier
Down
- 1. the point on the earth's surface vertically above the focus of an earthquake
- 2. the boundary between tectonic plates
- 3. these are formed as rivers empty their water into an ocean
- 5. molten natural material from which igneous rocks are formed
- 8. the outermost solid shell of a rocky planet
- 9. fine sand carried by running water