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Name: Chris M.
Status: Educator
Age: 50s
Location: N/A
Country: N/A
Date: June 2002


Question:
What is the evidence that the Earth's core is solid?



Replies:
------------------------------------------------ When there is an earthquake, waves are detected at many sites around the world. Not all types of earthquake waves travel through all materials. One type of wave, the S-wave, travels only through solids. There are lots of things involved here like refraction, reflection, etc., and seismologists who study the behavior of earthquake waves believe that the evidence supports a solid inner core and a liquid outer core. You might try looking at some basic geology books in the library. There are often diagrams of the ways these waves behave.

Pat Rowe



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