Department of Energy Argonne National Laboratory Office of Science NEWTON's Homepage NEWTON's Homepage
NEWTON, Ask A Scientist!
NEWTON Home Page NEWTON Teachers Visit Our Archives Ask A Question How To Ask A Question Question of the Week Our Expert Scientists Volunteer at NEWTON! Frequently Asked Questions Referencing NEWTON About NEWTON About Ask A Scientist Education At Argonne Volcanic Eruptions and the Earth's Core
Name: Stacy
Status: Other
Age: 20s
Location: N/A
Country: N/A
Date: N/A 


Question:
Please explain how volcanic eruptions work in relation to the earths outer core. I do no understand how the earth could continuously have volcainic eruptions (i.e. forming volcanic islands, etc) and not "run out" of materials (i.e. magma, etc). Surely the earths core does not have a "neverending" supply of volcanic material, so how can the earth continue to release material from the core? Is there a way that the earth "reclaims" or "pulls materials back in" to its core?



Replies:
Yes. In many places, pieces of the earth's crust are diving down to the mantle. This is happening off the coast of the Pacific Northwest, for example.

Richard E. Barrans Jr., Ph.D.
Assistant Director
PG Research Foundation, Darien, Illinois



Click here to return to the Environmental and Earth Science Archives

NEWTON is an electronic community for Science, Math, and Computer Science K-12 Educators, sponsored and operated by Argonne National Laboratory's Educational Programs, Andrew Skipor, Ph.D., Head of Educational Programs.

For assistance with NEWTON contact a System Operator (help@newton.dep.anl.gov), or at Argonne's Educational Programs

NEWTON AND ASK A SCIENTIST
Educational Programs
Building 360
9700 S. Cass Ave.
Argonne, Illinois
60439-4845, USA
Update: June 2012
Weclome To Newton

Argonne National Laboratory