說明文--分類文 classification essays

The Three Main Types of Volcanoes

active volcanoes dormant volcanoes extinct volcanoes topic sentence Scientists have categorized volcanos into three main categories: active, dormant, and extinct.

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1. an example of an active volcano

2. an example of a dormant volcano

3. an example of an extinct volcano

In short, the above classification is primarily based on a volcano's eruptive pattern.

Scientists have categorized volcanoes into three main categories: active, dormant, and extinct.

An active volcano is erupting now or may erupt again in the near future. 'One example of an active volcano is Mount Merapi in Indonesia. 'It erupted in 2018, choking the sky with thick black smoke. 'A dormant volcano is a volcano that hasn't erupted for a long time, but for which there is the possibility of future eruption. 'For example, Mount Changbai in China is a dormant volcano that erupted in 1903. 'It had remained inactive for more than 100 years. 'An extinct volcano is one that erupted thousands of years ago, and it has no likelihood of eruption. 'Mount Kilimanjaro in Tanzania had its major eruption about 100,000 years ago, and it had no possibility of erupting again. 'Thus, it is categorized into the group of extinct volcanoes.

In short, the above classification is mainly based on