Across
- 4. 200million years ago, Antarctica was joined to South Aimerica, Africa, India and Australia in a single large continent
- 6. Long seismically active submarine
- 7. The outer most shell of a planet
- 9. Surrounds the inner core of the earth (1,367 miles thick)
- 10. An opening in a planet or moons crust through which molten rock, hot gases and other materials erupt
- 14. scientist who explained the theory of continental drift
- 15. Transform boundary between two maps
- 18. all continents existed as one super-continent
- 19. Ancient continental mass in the Northern itemisphere that included North America, Europe, and Asia
- 20. Action of surface processes
Down
- 1. The earth
- 2. Landmasses were drifting across the earth
- 3. Innermost layer of the Earth
- 5. the edges where two plates meet
- 8. Very large land masses
- 11. being worn by long exposure to the atmosphere
- 12. Molten rock ejected by volcanoes in the form of a liquid
- 13. A hot and cold mixture of water and rock fragments that flow quickly down the slopes of a volcano
- 16. Hills,mountains,canyons, and vallegs
- 17. Solid bulk of Earth's interior