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Volcano Questions and Answers (Q&A)

I got this question wrong because I hadcrust, core and mantle.

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When a volcano erupts it does not just simply erupt out of nowhere and then that's the end of it. The eruption of a volcano is a process. First of all a volcano is a way for magma from within the Earth to escape. When pressure from gases gets too great a volcano will erupt so that the built up magma under pressure has somewhere to go. After the volcano erupts the magma becomes lava and it begins to cool down once it has reached the surface.

Lava and volcanic ash can have a profound effect on the area around the volcano and it can destroy people’s homes as well. When the lava all cools down and everything is returned to normal the process will start all over again with gases building up that will eventually lead to another eruption.

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3 Answers

A device that measures the intensity of a earthquake is the richter scale

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Located at hot spots

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Caldera - a large basinlike depression resulting from the explosion or collapse of the center of a volcano

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Volcanoes are opening in earths surface through which lava, lava hot gases and rock fragments erupt

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Indonesia is the country that has the most volcanoes. About 76 volcanoes have been recorded as having erupted over the years. Indonesia is a chain of about 18,000 islands located to the north of Australia and is bordered by the Indian and Pacific oceans. The islands are spread over an area similar in size to the continental United States.

Most of the active volcanoes in Indonesia belong to the 3,000 kilometer stretch of the Sundra volcanic Arc. Indonesia holds the record for the highest number of volcanic eruptions, which have produced fatalities, land damage, and tsunamis. This country has 147 volcanoes. Some of which are still active.

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I put ash and gases and got the answer incorrect!

1 Answer

Magma is the term that is used to call molten rocks that resides deep within the earth. It is composed of crystals, particles of rock, liquids and different types of gas. The reason that magma rises to the earth is that its weight is lesser than the hard rocks that surround it and also the extreme temperature underneath the earth forces it to rise upward.

When magma is forced to rise due to the reasons mentioned above, it exerts pressure on the weak spots of the crust. It fills up the cracks that were produced by the shifting of the earth’s crust and when the pressure has risen too much, it will force itself upwards and erupt as lava.

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1 Answer

My answer is 2, Crust, i hope i am correct!

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