---
title: "Active, Dormant & Extinct"
description: "Classify volcanoes as active (could erupt any time), dormant (sleeping but could wake up), or extinct (will not erupt again)"
canonical: https://lightmysky.com/learn/science/active-dormant-and-extinct-mt_dSeFrAWE4v
source: https://lightmysky.com/learn/science/active-dormant-and-extinct-mt_dSeFrAWE4v.md
retrieved: 2026-10-19
---

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# Active, Dormant & Extinct

Classify volcanoes as active (could erupt any time), dormant (sleeping but could wake up), or extinct (will not erupt again)

Subject: Science · Area: Volcanoes & Earthquakes · Ages 7 to 9
Page: https://lightmysky.com/learn/science/active-dormant-and-extinct-mt_dSeFrAWE4v

## Ready when they can

- Define active, dormant, and extinct volcanoes
- Explain that a dormant volcano is not safe just because it has not erupted recently
- Classify a given volcano based on its eruption history

## Lesson: Active, Dormant, or Extinct?

Volcanoes are not all the same. Some could erupt any day. Some are asleep right now but might wake up later. Some will never erupt again. We call these three groups active, dormant, and extinct.

*(drawing: Volcano A erupted just 2 years ago. Volcano B has been quiet for 80 years. Volcano C has not erupted in 3,000 years.)*

**Example.** Look at the volcanoes above. Volcano A erupted just 2 years ago, so it is active. It could erupt again soon. Volcano B has been quiet for 80 years, so it is dormant. It is sleeping, but it still has magma underground. Volcano C has been silent for 3,000 years and has no magma left, so it is extinct.

**Tip.** A dormant volcano can look just as calm as an extinct one. Do not be fooled. Dormant means the magma is still down there waiting, so scientists keep watching it even after 100 quiet years.

**Recap.** Active could erupt soon, dormant is sleeping but not safe, and extinct will never erupt again.

## Practice

8 questions on this page, each with its working shown.

## Needs first

- [Power of Eruptions](https://lightmysky.com/learn/science/power-of-eruptions-mt_BLQ2_OXPod)
- [What Is a Volcano](https://lightmysky.com/learn/science/what-is-a-volcano-mt_S9SKah-yi_)

## Opens up

- [Eruption Types & Volcano Shape](https://lightmysky.com/learn/science/eruption-types-and-volcano-shape-mt_W4j7T_PnGH)
- [Monitoring Volcanoes](https://lightmysky.com/learn/science/monitoring-volcanoes-mt_ZRoQVXf_aD)