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 ...

Scientists classify volcanoes according to how explosively they erupt, as well as their height and shape. The four types of volcanoes they recognize are cinder cones, lava domes, shield volcanoes ...

There are two main types of volcano - composite and shield. The two types of volcano form in different places and have very different characteristics. Ash released from shield volcanoes often ...

The main place to find these types of volcanoes is the "Ring of Fire" that circles the Pacific Ocean. There are more than 450 volcanoes in the Ring of Fire, according to the National Oceanic and ...

This creates a depression in the surface and is sometimes referred to as a crater, but it is actually a type of sink hole. Caldera Volcanoes are a common type of Super Volcanoes, which have large ...

Located about a 3-hour, 45-minute drive from San Francisco, Lassen Volcanic National Park is home to all four types of volcanoes found worldwide: shield, composite, cinder cone and plug dome.

Composite volcanoes are the most common type of volcano. They can have violent eruptions and can grow bigger as layers of thick lava and ash harden on top of each other. Mount Etna in Sicily ...

Data from NASA's Lunar Reconnaissance Orbiter (LRO) have revealed a new type of rock on the lunar surface—which scientists say was spat up by a style of volcano never before seen on the moon.