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Q: Describe how very big eruptions such as Krakatoa and mount st helens can have effects beyond the area around the volcano?
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Is Krakatoa and Anak Krakatoa the same volcano?

No. Continued eruptions at the Krakatoa/Krakatau since 1927 have built a new island, called Anak Krakatau (child of Krakatoa).


1883 volcanic eruptions?

It was on the Island of Krakatoa - and the huge eruption blew most of the volcano apart.


What types of crust does krakatau have?

The Krakatoa volcano has periodic eruptions. The last time it erupted was in 2012. This volcano is made of basalt and rhyolite.


What are the effects of volcano eruptions?

they ruin the earth.


Will Krakatoa ever explode again?

Yes. Krakatoa is a volcano prone to violent eruptions and it probably will erupt violently again. While it periodically has small eruptions,we might not see another one on the scale of the 1883 eruption for a few thousand years.


Were there any early activities that showed that the Krakatoa volcano was going to erupt?

Yes. Krakatoa produced a series of earthquakes and small eruptions for months leading up to the main eruption in August 1883.


What is Krakatoa Exactly and does it have a volcano growing in it or what?

Krakatoa is an island in Indonesia, and it has an active volcano on it :)


Is mount Krakatoa a shield composite or cinder cone volcano?

Krakatoa is a composite volcano.


Is Krakatoa a super volcano?

Okay from what we have found out so far 2012, it looks like Krakatoa is a super volcano. Pre 1883 The was a earlier Caldera forming eruption, which split the main land of Java and Sumatra apart. This lead to the formation of the Sunda Straits. (super eruption) 416 AD Krakatoa was again mentioned in the book of kings. In recent eruptions it has not had a large super eruption, but as we all know who like the story of Krakatoa it 'child' Anakrakatoa is a source of concern. So there's my answer circa 2012 :0)


Is Krakatoa a mainland volcano?

No. Krakatoa is its own island.


When does Krakatoa Volcano erupted?

Do you mean :'' When did Krakatoa erupted? Krakatoa erupted in 1883


Is Mt Krakatoa an Active Volcano?

Yes, Krakatoa ( or Krakatau, as it is said in Indonesian, which is where it is located,) is still highly active. It's most recent eruption was in November of the year 2010