I learned alot about volcanoes this unit. And im going to talk about a couplekinds first the composite volcano this type of volcano is usally ten miles long and ten thousand or more feet high. Then the cinder cone volcano these types of volcanoes are pretty small their about a mile across the top and about a thousand feet high.now for the lavas there are four types of lavas =   low water/high silica ,high water/low silica,low water/low silica and high water/highsilica. Guess what did you know some lavas are really runny and some are like hot wax!                  I  science