Volcanoes

Front

What causes magma to rise to the surface?

Back

Magma rises because it is less dense than the surrounding material.

Front

What is an active volcano?

Back

An active volcano is one that has erupted at least once in the last 10,000 years.

Front

Where can volcanoes be found?

Back

Volcanoes can be found on land, under water, on islands, and in many other locations.

Front

What is molten rock that forms deep within the Earth called?

Back

Magma.

Front

What type of volcano is made of lava fragments ejected from a volcanic vent?

Back

Cinder Cone.

Front

What is the term for molten rock that reaches the Earth's surface?

Back

Lava.

Front

What is a dormant volcano?

Back

A dormant volcano is one that hasn't erupted in the last 10,000 years but could still erupt.

Front

What is a caldera?

Back

A caldera is a large depression formed when a volcano erupts and collapses.

Front

What is a shield volcano?

Back

A shield volcano is a broad, gently sloping volcano formed by the eruption of low-viscosity lava.

Front

What is a composite volcano?

Back

A composite volcano is characterized by a combination of explosive eruptions and lava flows.