6.6 Composition of the Earth - Direct Observations (Chapter 6: Earth's Structure: Direct and Indirect Evidence)
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Course
AS Unit F791 - Global Tectonics
Institution
OCR
This document contains detailed notes on the Composition of the Earth - Direct Observations from Chapter 6: Earth's Structure: Direct and Indirect Evidence of the A Level Geology course. It includes all the information required to secure a top grade in this part of the course. These notes took me m...
, Evidence to Support the Earth’s Composition
• We can find out about distant planets and moons more easily that
we can find out about the composition of the Earth’s interior. First-
hand observation and sampling of rocks and structures allow us to
touch rocks from a maximum depth of just 250km.
• As it is 6,371km to the centre of the Earth, the only part of the Earth
that can be observed directly is the top 3.7%.
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