How do we know that the inner core of the Earth is hot?

Subject: How do we know that the inner core of the Earth is hot?

Date: Wed Mar 17 10:22:11 1999
Posted by Shelly M.
Grade level: No grade entered. School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Earth Sciences
ID: 921687731.Es

Message:


   In my science class we have learned that plate (as in plate 
tectonics)
movement is caused by convection currents in the magma (in the 
mantle). These
currents are created by the heat coming from the inner core. 
However, if the
core is over 2000 km deep, then how exactly do we know that it is 
heated?

Sincerely,
Shelley M.
ShellMo85@aol.com

Re: How do we know that the inner core of the Earth is hot?

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