Types of Volcanoes

	Composite Volcanoes Volcanologists call these "strato-" or composite volcanoes because they consist of layers of solid lava flows mixed with layers of sand- or gravel-like volcanic rock called cinders or volcanic ash.
Cinder Volcanoes These volcanoes consist almost entirely of loose, grainy cinders and almost no lava. They are small volcanoes, usually only about a mile across and up to about a thousand feet high. They have very steep sides and usually have a small crater on top.
	Shield Volcanoes This type of volcano can be hundreds of miles across and many tens of thousands of feet high.Shield volcanoes have low slopes and consist almost entirely of frozen lavas. They almost always have large craters at their summits.