Across
- 4. underwater mountain
- 7. the place where two plates meet
- 10. lava that cools and solidifies quickly
- 12. depression in the ocean floor
- 13. a volcano that has secondary cone
- 14. lava that is thin
- 15. plate boundary that will not create volcano
Down
- 1. a broad base volcano with gentle sloping sides
- 2. earth's crust which float on magma in the mantle
- 3. crust that is heavier than the continental
- 5. located in the middle of the earth
- 6. A very beautiful composite volcano at the summit covered by ice found in Japan
- 8. magma reaches the earth surface
- 9. opening of the earth's surface
- 11. current reason for plates to move
