How many types of valcanoes are there?

Answer 1

There are 3 main types of volcanoes:

Shield - These volcanoes erupt with lava that has a very low viscosity. The lava is mainly composed of basalt, and forms mostly at rifts and subduction zones, but can also be an indication of a hotspot. Hawaii is made of Shield Volcanoes.

Composite - Tall volcanoes, they are composed of alternating layers of lava, ash and cinders. (Mt. Fuji and Mt. Vesuvius are Composite volcanoes). They generally have very violent eruptions, and are the most dangerous to civilians.

Cinder Cone - A very short lived volcano, that may erupt only once, though these eruptions are typically violent. They can range from 30-400 meters in height, and when they erupt, the lava that is spewed forth cools quickly, breaking into ash or cinders, where the name comes from. Caja del Rio in New Mexico is a string of over 60 cinder cone volcanoes.