Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
but what about the substantial geothermal energy.0.1
I suspect that it is QUITE enough to keep things 'stirred up' and not
totally freezing.
Perhaps have NO ocean ice at ALL!
At 8:06 AM -0500 on 12/3/01, Rick Tarara wrote
But once the whole body of water has cooled and mixed to a nice uniform
thedegree C and then cools a little more----one big ice cube! Somewhat
devastating to temperate (and artic) zone aquatic life and therefore to
subdiversity of aquatic life, but unless one can cite evidence of sustained
itselfzero global temperatures during the past 2 billion years, then life
insteadis not necessarily threatened.
Rick
**********************************************
Richard W. Tarara
Professor of Physics
Saint Mary's College
Notre Dame, IN 46556
rtarara@saintmarys.edu
FREE PHYSICS INSTRUCTIONAL SOFTWARE
www.saintmarys.edu/~rtarara/
PC and MAC software
NEW! SIMLAB2001--DYNAMIC CARTS now available.
CD-ROMs now available
******************************************************
----- Original Message -----
From: "Brian Whatcott" <inet@INTELLISYS.NET>
To: <PHYS-L@lists.nau.edu>
Sent: Sunday, December 02, 2001 9:18 PM
Subject: Re: Density of water.
At 12:25 PM 12/2/01, Jim Green wrote:
>At 23:51 01 12 2001 , Bernard C wrote:
> >Right, Hewitt plots (ordinate) the volume of one gram of water
sg> of thezero C
> >inverse. No matter, he's plotting water not ice. Ice (normal near
> >[ice I]) 917 kg / m^3 or sg ~ .92 Water @ 100 C is 1.04 mL / g or
water at> 0.96 So
> >ice floats as per your experience (and mine).
>
>Bernard, you seem to be missing the essential point -- the fact
>that makes life possible! Water at freezing is less dense than
denser>4C therefore water freezes on the _surface_ of the body of water.
>
>Jim Green
>mailto:JMGreen@sisna.com
>http://users.sisna.com/jmgreen
This gee whiz item is a favorite of the divine design folks.
If water density uniformly decreased above freezing point,
it would cool at the surface of cooler air as usual - and becoming
exists.when cooler then sink, until it reached it reached its density level.
Relatively warmer water at the bottom would rise, and so I suppose,
there might be a vigorous circulation while a temperature gradient
be aAnd quite possibly on significant bodies of water, there would always
thatgradient, and a circulation, so that icing would be postponed perhaps
banished from significant bodies of water....
This does not seem specially lethal to life, when I consider the life
.-thrives
in sulphide springs at great depths.
Brian Whatcott
Altus OK Eureka!
--
.-. .-. .-. .-. .-. .-. .-. .-. .-.
\ / \ / \ N / \ C / \ S / \ S / \ M / \ / \ /when
`-' `-' `-' `-' `-' `-' `-' `-' `-'
Chuck Britton Education is what is left
britton@ncssm.edu you have forgotteneverything
North Carolina School of Science & Math you learned in school.1936
(919) 286-3366 x224 Albert Einstein,