This movie requires Flash Player 8. Download Flash Player 8

Issue Features
View this issue online as it looks in print
Discovery Magazine 3/1/2013

How long does it take for the lava to flow out of the center of the Earth and to erupt out of the volcano and become igneous rock?

by  Digger Doug

Dear J.M.,

I can see you like volcanoes. So do I! They are an awesome part of God’s creation. Volcanoes are mountains that have pools of molten rock inside. Eventually, pressure builds up until it has to find somewhere to escape. It then forces its way up through “fissures,” which are cracks in the Earth’s surface. Once the hot magma passes through the Earth’s surface, it is called lava. Igneous rocks form whenever the lava cools down and turns into rock. 

How long does this process take? It certainly does not take millions of years. The fact of the matter is, there is no certain amount of time that it takes volcanoes to erupt. Some very active volcanoes can erupt every few months. Mt. Etna, in Sicily, is an example of this kind of volcano. Other volcanoes erupt every 5-10 years. And some volcanoes may erupt once in a thousand years. We do know that most of the time, the volcanoes that erupt often are much smaller and produce small explosions and ash clouds. But the ones that take longer to erupt have time to build up more force and erupt in much larger explosions. Thanks for your good question.

Copyright © 2013 Apologetics Press, Inc. All rights reserved.

*Please keep in mind that Discovery articles are written for 3rd-6th graders.

This document may be copied, on the condition that it will not be republished in print unless otherwise stated below, and will not be used for any commercial purpose, as long as the following stipulations are observed: (1) Apologetics Press must be designated as the original publisher; (2) the specific Apologetics Press Web site URL must be noted; (3) any references, footnotes, or endnotes that accompany the article must be included with any written reproduction of the article; (4) textual alterations of any kind are strictly forbidden; (5) Some illustrations (e.g., photographs, charts, graphics, etc.) are not the intellectual property of Apologetics Press and as such cannot be reproduced from our site without consent from the person or organization that maintains those intellectual rights; (6) serialization of written material (e.g., running an article in several parts) is permitted, as long as the whole of the material is made available, without editing, in a reasonable length of time; (7) articles, excepting brief quotations, may not be offered for sale or included in items offered for sale; and (8) articles may be reproduced in electronic form for posting on Web sites pending they are not edited or altered from their original written content and that credit is given to Apologetics Press, including the web location from which the articles were taken. Further, documents may not be copied without source statements (title, author, journal title), and the address of the publisher and owner of rights, as listed below.

For catalog, samples, or further information, contact:

Apologetics Press
230 Landmark Drive
Montgomery, Alabama 36117
Phone (334) 272-8558

Web Store

Defending the Faith Study Bible

We are very excited to announce the NEW AP Defending the Faith Study Bible now available.

Featured Audio


Click the following link to visit our Multimedia section.

Featured Audio