Question: what are the differences between the four types of volcanoes?
Answer: Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes. Cinder cones are circular or oval cones made up of small fragments of lava from a single vent that have been blown into the air, cooled and fallen around the vent. ... Helens are examples of this type of volcano.