Volcanoes: Types and Activity

Which volcano is known as the most active volcano in the world?

What distinguishes active volcanoes from inactive volcanoes?

Which volcano is NOT considered an active volcano?

Which volcano in the Philippines is known for having 52 historical eruptions?

Which active volcano last erupted in 2020?

What is a key characteristic of stratovolcanoes, as seen in Mt.Mayon?

Which volcano is noted for being the most dangerous eruption in history?

How many active volcanoes are being monitored by PHIVOLCS as mentioned?

Which of the following is NOT a characteristic of an inactive volcano, according to the provided content?

Based on the provided content, which of the following volcanoes is classified as potentially active?

According to the content, what is the key difference between active volcanoes and potentially active volcanoes?

What is the basis for PHIVOLCS' classification of volcanoes?

Which of the following statements is NOT true about inactive volcanoes, according to the content?

Volcanoes - Types and Activity

Learning Objectives: Differentiate volcanic architectures, explain their formation, describe volcano parts, compare active and inactive volcanoes, and explain different eruption types.

Types of Volcanoes by Activity

Active Volcanoes: These volcanoes have eruptive histories, meaning a recorded eruption in historical times. Examples include: Mt. Kilauea, Mt. Mayon, Mt. Taal, Mt. Etna, Mt. St. Helens.
- Currently, 23 active volcanoes are being monitored by PHIVOLCS.
- Dateable erupted materials confirm eruptions within the last 10,000 years. Mt. Vesuvius (79 AD) is considered a historically dangerous eruption.
- Four most active in the Philippines: Mt. Mayon (52 eruptions), Mt. Taal (34 eruptions), Mt. Kanlaon (30 eruptions), Mt. Bulusan (18 eruptions).
  - Mt. Mayon's "perfect cone" structure signifies it's a stratovolcano.
  - Mt. Taal last erupted in 2020
  - Mt. Kanlaon last erupted in 2016
  - Mt. Bulusan last erupted in 2017.
Inactive Volcanoes: These volcanoes have no eruptive history, are heavily weathered, and will not erupt again. Examples include Mt. Arayat and the Seven Lakes of San Pablo.
- PHIVOLCS lists 335 inactive volcanoes, some unnamed.
Potentially Active Volcanoes (Dormant): These volcanoes have no recorded eruptive history and no recent dateable materials. Still, some show signs of activity or residual heat. Examples include Mt. Apo, Mt. Talinis, and Mt. Isarog.
- PHIVOLCS lists 26 potentially active volcanoes.

Key Points

PHIVOLCS classifies Philippine volcanoes based on their activity.
Active volcanoes have erupted historically.
Potentially active volcanoes lack historical eruption records but may show morphological signs of recent activity.
Inactive volcanoes have never erupted and are heavily weathered.
The Philippines' location in the Ring of Fire leads to considerable volcanic activity.

Explore the various types of volcanoes and their activity levels in this quiz. Learn to differentiate between active and inactive volcanoes, understand their formation, and discover different eruption types. Test your knowledge on famous volcanoes and their activity histories!