Across
- 4. what is earth's longest underwater mountain range?
- 6. boundary Where 2 plates slide past eachother in opposite directions
- 11. boundary Where 2 plates collide
- 13. who proposed the continental drift theory?
- 14. boundary Where 2 plates move away from eachother
- 15. how old was Alfred when he died?
- 17. what was the one thing that made everyone believe Alfred's theory
- 18. what date is 1880?
- 19. what was alfred Wegener?
Down
- 1. where the ocean floor sinks down into a trench and back into the mantle
- 2. the theory where all continents were joined together in a single landmass and have moved apart ever since
- 3. what other theory did alfred propose?
- 5. where did alfred die?
- 7. the supercontinent that Alfred named
- 8. what is the year 1930 in alfred's life.
- 9. what was alfred's wife's name?
- 10. what other type of scientist was alfred?
- 12. what was alfred on when he died?
- 15. true or false? everyone believed Alfred Wegener and his theory.
- 16. how many boundaries are there?
- 20. true or false? scientists today used Alfred's research to put together pieces over the continental drift