Across
- 1. The upper layer of soil that is rich in organic matter
- 5. The wearing away and movement of soil and rock
- 6. The sudden shaking of Earth's surface
- 9. A sedimentary rock made from compacted sand
- 13. A crack in Earth's crust where rocks can move
- 14. A naturally occurring substance with a definite chemical composition
- 18. Related to volcanoes or volcanic activity
- 20. A metamorphic rock commonly formed from shale
- 22. The breakdown of rocks at Earth's surface
- 23. Molten rock that reaches Earth's surface
- 24. The thin outermost layer of Earth
- 25. A hot spring that periodically shoots water and steam
- 26. The rigid outer layer of Earth
- 29. A rock type formed when molten rock cools
- 30. An opening in Earth's crust where magma can escape
- 31. A very hard mineral made of carbon
- 32. A common igneous rock made of visible mineral grains
Down
- 2. A large moving section of Earth's lithosphere
- 3. A bowl-shaped depression around a volcanic opening
- 4. A naturally occurring solid made of minerals
- 7. A common mineral found in many types of rocks
- 8. The preserved remains or traces of ancient organisms
- 10. A deep valley with steep sides formed by erosion
- 11. Molten rock found beneath Earth's surface
- 12. A sedimentary rock made mainly from compacted mud
- 15. The thick layer beneath Earth's crust
- 16. Related to the movement of Earth's crustal plates
- 17. A metamorphic rock formed from limestone
- 19. The innermost layer of Earth
- 21. A sedimentary rock often formed from shells and marine organisms
- 25. The study of Earth, its rocks, and its history
- 27. Small pieces of rock, sand, or soil moved by water or wind
- 28. A dark volcanic rock formed from cooled lava