Plate Tectonics

3. When two plates come together
4. Smooth and ropey lava
8. A solid material that is ejected from a volcano
9. A mudflow caused by a volcanic eruption
10. "All lands"
11. When magma reaches the surface
13. A long narrow split where basaltic magma flows out
17. ThSouthern-day continents of SOuth America, Africa, Antarctica, and the subcontinent of India
18. Found at the edge of a continent
19. Magma that is thick and traps gas bubbles
20. The crust is made up of plates that float on the asthemosphere
21. The theory that all landmasses on earth were once together

1. When two plates move away from each other
2. Larger rocks that are blown from the crater of a volcano
5. The seafloor is spreading along theMid-Ocean Ridge
6. Pebble-sized material that is thrown from a volcano
7. The modern-day continents of North America, Europe, Asia, and Greenland
8. When two plates slide against each other
12. The Earth's crust is broken up into plates made up of continental and oceanic rock
14. Molten rock beneath the surface
15. Magma that is thin and flows easily
16. Sharp and blocky lava