1	Pipe		_____	Bowl-shaped area on top of volcanoe.
2	vent		_____	An inactive volvanoe that scientist expect to become active.
3	crater		_____	Chemical material that composes magma.
4	Magma Chamber		_____	The hole left when volcanoe collapses.
5	silica		_____	Cooler and thicker lava.
6	dormant		_____	Magma moves upward through this tube.
7	caldera		_____	Body of roks formed when magma cools.
8	batholiths		_____	Opening on to of volcanoe.
9	extinct		_____	A volcanoe that is unlikely to errupt.
10	Aa		_____	Pocket of magma inside a mountain.