Chapter 5 Volcanoes Extra Credit Crossword

5. Term used to describe a volcano that is no longer active and unlikely to erupt again.
7. The molten mixture of rock-forming substances, gases, and water from the mantle.
9. A long tube through which magma moves from the magma chamber to Earth’s surface.
10. An area where magma from deep within the mantle melts through the crust above it.
13. The area covered by lava as it pours out of a volcano's’ vent.
15. A string of volcanoes that form as the result of subduction of one oceanic plate beneath a second oceanic plate.
16. A deposit of hardened magma in a volcano’s pipe.
18. A mass of rock formed when a large body of magma cools inside the crust.
21. The flow of ash, cinders, bombs, and gases down the side of a volcano during an explosive eruption.
22. The large hole at the top of a volcano formed when the roof of a volcano’s magma chamber collapses.
23. A steep, cone-shaped hill or small mountain made of volcanic ash, cinders, and bombs piled up around a volcano’s opening.

1. Not currently active but able to become active in the future (as with a volcano).
2. The opening through which molten rock and gas leave a volcano.
3. A material found in magma that is formed from the elements oxygen and silicon; it is the primary substance of Earth’s crust and mantle.
4. A slab of volcanic rock formed when magma forces itself across rock layers.
6. A tall, cone-shaped mountain in which layers of lava alternate with layers of ash and other volcanic materials.
8. A wide, gently sloping mountain made of layers of lava and formed by quiet eruptions.
11. The pocket beneath a volcano where magma collects.
12. A major belt of volcanoes that rims the Pacific Ocean.
14. Liquid magma that reaches the surface.
17. A weak spot in the crust where magma has come to the surface.
19. A slab of volcanic rock formed when magma squeezes between layers of rock.
20. A bowl-shaped area that forms around a volcano’s central opening.