Types of Volcanoes

Front

What is a volcano?

Back

A volcano is an opening in the Earth's surface where molten rock, ash, and gases can escape from below the surface.

Front

What are the two main types of lava?

Back

The two main types of lava are Pahoehoe and A'a.

Front

What is Pahoehoe lava?

Back

Pahoehoe lava is characterized by its low viscosity, smooth flow, and ability to form wrinkles and coils.

Front

What is A'a lava?

Back

A'a lava is high in viscosity, flows slowly, and has a rough, jagged surface.

Front

What type of volcano is formed by quiet eruptions?

Back

A Shield volcano is formed by a series of quiet eruptions.

Front

What type of volcano is formed by explosive eruptions?

Back

A Cinder Cone volcano is formed primarily by explosive eruptions.

Front

What is a Composite volcano?

Back

A Composite volcano is formed by alternating layers of quiet and explosive eruptions.

Front

What is the shape of a Shield volcano?

Back

A Shield volcano is wide and flat, created by layers of lava flow.

Front

What is a Cinder Cone volcano?

Back

A Cinder Cone volcano is steep and conical, formed from volcanic ash and small rocks ejected during eruptions.

Front

What is the main characteristic of a Shield volcano?

Back

The main characteristic of a Shield volcano is its broad, gently sloping shape.