Set 8B

Front

What does the Volcanic Explosivity Index (VEI) measure?

Back

The Volcanic Explosivity Index (VEI) measures the explosiveness of volcanic eruptions on a scale from 1 to 10, where each number increase represents an eruption that is 10 times stronger.

Front

What is an extinct volcano?

Back

An extinct volcano is one that shows no signs of seismic or volcanic activity and is almost certain not to erupt again, although volcanologists cannot be completely sure.

Front

What is a dormant volcano?

Back

A dormant volcano is an inactive volcano that has not erupted in a long time but may still have occasional deep seismic activity.

Front

What type of volcano usually erupts with pyroclastic material?

Back

Cinder cone volcanoes usually erupt with pyroclastic material.

Front

What are shield volcanoes?

Back

Shield volcanoes are flat and dome-shaped volcanoes that usually erupt with lava.

Front

What is the difference between active and dormant volcanoes?

Back

Active volcanoes are currently erupting or have erupted recently, while dormant volcanoes have not erupted in a long time but may still erupt in the future.

Front

What is a composite cone volcano?

Back

A composite cone volcano, also known as a stratovolcano, is characterized by a combination of explosive eruptions and lava flows, resulting in a steep, conical shape.

Front

What is pyroclastic material?

Back

Pyroclastic material consists of volcanic ash, pumice, and other fragments ejected during explosive volcanic eruptions.

Front

What are the main types of volcanoes?

Back

The main types of volcanoes are shield, cinder cone, and composite cone (stratovolcano).

Front

How does the VEI scale help scientists?

Back

The VEI scale helps scientists categorize and compare the explosiveness of different volcanic eruptions.