Volcanoes are grouped into four types: cinder cones, composite volcanoes, shield volcanoes and lava volcanoes.

Just as there are different types of volcanoes, there are also different types of magma — the molten rock that lies deep within Earth (it is called lava once it reaches the surface).

There are many different types of volcanoes. Calderas, like Mount Vesuvius, consist of a large, cauldron-like hollow that forms after the emptying of a magma chamber during an eruption.

Volcanoes are a powerful force of nature. There are about 1500 active volcanoes on our planet right now. A volcano is an opening in the Earth's crust that allows lava and other volcanic matter to ...

However, Mars has some features that we think of as corresponding with plate tectonics—volcanoes. A new paper from researchers at the University of Hong Kong (HKU) looks at how different types ...