The three classifications/shapes are shield volcanoes, cinder cone volcanoes and Stratovolcanoes, also known as composite volcanoes (CTIE). A shield volcano slopes gently. Cinder cone volcanoes are the most common type and have cone-shaped peaks. Stratovolcanoes are known as composite volcanoes because of the layering within the volcano. Inside there are layers that alternate between lava, ash, and un-melted rock. These volcanoes are considered the most violent type because of the eruptions. Pressure is able to build within the different layers and when the magma is finally able to reach the top, the volcano will explode. Often, due to this great pressure the stratovolcanoes will blow out the sides of the structure as well as the top opening (CITE live
The three classifications/shapes are shield volcanoes, cinder cone volcanoes and Stratovolcanoes, also known as composite volcanoes (CTIE). A shield volcano slopes gently. Cinder cone volcanoes are the most common type and have cone-shaped peaks. Stratovolcanoes are known as composite volcanoes because of the layering within the volcano. Inside there are layers that alternate between lava, ash, and un-melted rock. These volcanoes are considered the most violent type because of the eruptions. Pressure is able to build within the different layers and when the magma is finally able to reach the top, the volcano will explode. Often, due to this great pressure the stratovolcanoes will blow out the sides of the structure as well as the top opening (CITE live