Across
- 5. a mixture of molten and semi-molten rock hard or brittle external coat or covering
- 8. a solid whose atoms are arranged
- 12. molten rock ejected by volcanoes
- 13. the hardest known mineral
- 14. the initial and fundamental process by which the separation of two continents into two tectonic plates takes place
- 15. moving or extending in different directions from a common point
- 16. the mostly solid bulk of Earth's interior
- 17. A hot spring that discharges intermittent jets of steam and water
- 18. tending to move toward one point or to approach each other
- 20. dust, soil, or any substance that makes this dirty
Down
- 1. a hard or brittle external coat or covering
- 2. is a large continuous mass of land conventionally regarded as a collective region
- 3. massive slab of solid rock made up of Earth's lithosphere (crust and upper mantle)
- 4. an issuing forth suddenly and violently; outburst; outbreak
- 6. to study or examine something in detail, in order to discover more about it
- 7. a person or thing that serves as a pattern for an artist
- 9. a loose granular material that results from the disintegration of rocks, consists of particles smaller than gravel
- 10. a form or model proposed for imitation
- 11. A remnant, impression, or trace of an animal or plant of a past geologic age that has been preserved in the earth's crus
- 12. a feature on Earth's surface that is part of the terrain
- 19. the amount of a charge or payment with reference to some basis of calculation