River's Plate Tectonics Crossword Puzzle
Across
- 4. to change in form, appearance of structure
- 9. hot molten or semi-fluid rock erupted from a volcano or surface
- 10. hit with force
- 11. is the place where two plates meet
- 14. that part of the earth's crust that underlies the continents and continental shelves
- 15. the strength and vitality required for sustaining physical or mental activity
- 17. solid sphere in the middle of the fluid core such as the iron-nickel core of the Earth
- 19. movement caused within a fluid by the tendency of hotter and therefore less dense to rise
- 20. vent in the earth's crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals
Down
- 1. a large natural elevation of the earths surface
- 2. limit
- 3. sub sea chasm extending along the crest of a mid-ocean ridge, locus of the magma upwelling that accompany seafloor spreading
- 5. upper layer of earth's mantel
- 6. hemispheric-scale long but narrow topographic depressions of the sea floor
- 7. rising or falling, increasing or decreasing, according to a standard or to a set of conditions
- 8. long mountain range on the ocean floor
- 12. the crust and upper mantel of the earth
- 13. a theory explaining the structure of the earth's crust
- 16. trench long narrow steep-sided depression in the earth's oceanic crust
- 18. merging