Article View: sci.space
Article #7653Re: Volcanism (from net.space)
From: Ethan Vishniac
Date: Wed, 05 Nov 1986 15:38
Date: Wed, 05 Nov 1986 15:38
22 lines
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1562 bytes
In article <3400001@wdl1.UUCP>, gerolima@wdl1.UUCP (Mark Gerolimatos) writes:
> (duplicate posting from net.space...)
>
> I was reading some stupid Time/Life book on the solar system, when
> I ran across something on Io. The line mentioned that Io's volcanism
> is not a result of radiation, as on earth.
>
> Can someone please explain what they meant by volcanism begin the
> result of radiation? Perhaps they meant in the form of heat from
> the core?
You have it. The Earth's core is hot as a result of radioactive decay
of heavy atoms. (There is also some contribution from the release of
latent heat as material gradually solidifies). Io's core is too
small for this to work (also Io is made of lighter stuff). Its
core is heating by tidal friction.
--
"More Astronomy Ethan Vishniac
Less Sodomy" {charm,ut-sally,ut-ngp,noao}!utastro!ethan
- from a poster seen ethan@astro.AS.UTEXAS.EDU
at an airport Department of Astronomy
University of Texas
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!ut-sally!utastro!ethan From: ethan@utastro.UUCP (Ethan Vishniac) Newsgroups: sci.space Subject: Re: Volcanism (from net.space) Message-ID: <1385@utastro.UUCP> Date: Wed, 5-Nov-86 10:38:04 EST Article-I.D.: utastro.1385 Posted: Wed Nov 5 10:38:04 1986 Date-Received: Wed, 5-Nov-86 22:29:22 EST References: <3400001@wdl1.UUCP> Organization: U. Texas, Astronomy, Austin, TX Lines: 22 Summary: yes