Q:

How many volcanoes erupt each year?

A:

On average, between 50 and 60 volcanoes erupt each year around the world. This amount averages nearly one volcanic eruption per week.

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Full Answer

Sometimes, one volcanic eruption can trigger other eruptions in volcanoes that are close by. Generally, the larger a volcano is, the more likely it is that its eruption will trigger other volcanoes into erupting at around the same time.

Most often, volcanic eruptions are brought on by earthquakes or tectonic movement. For example, in 1868, a large earthquake hit the island of Hawaii. The earthquake was almost immediately followed up by a small eruption from Kilauea's southwest rift zone. During that volcano, the Kilauea Iki crater filled with lava.

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Related Questions

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    How many volcanoes are there?

    A:

    The number of potential active volcanoes on Earth is estimated to be about 1500, with 550 of these having erupted in recorded history. The total number of volcanoes throughout the entire world is unknown, because not all volcanoes are accessible, known and recorded.

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    What volcanoes have erupted in the last 10 years?

    A:

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