Why are the same substances present on more than one planet?

Subject: Why are the same substances present on more than one planet?

Date: Thu Dec 30 20:24:09 1999
Posted by Miss Arbogast's Science Class
Grade level: 7-9 School: Fox Junior High
City: Arnold State/Province: MO Country: USA
Area of science: Astronomy
ID: 946607049.As

Message:


If the chemicals settled in layers around the sun during formation of the 
solar system, why is there methane and ammonia on Earth as well as on the 
outer planets?  Shouldn't each substance be found in only one general area 
of the solar system?  We've heard that temperature and gravity cause 
substances to be found in certain parts of the solar system, are there 
other factors that contribute to this?

Re: Why are the same substances present on more than one planet?

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