Difference between revisions of "Most abundant elements on Earth"

Revision as of 04:12, 26 November 2005

Approximate composition of dry atmosphere by volume:

Element	%age by volume
Nitrogen	78.084
Oxygen	20.946
Argon	0.9340
Carbon	less than 0.01
Others	trace
Not included in above dry atmosphere:
Water vapour	Highly variable but typically 1%

Source: NASA
Carbon dioxide and methane updated (to 1998) by IPCC TAR table 6.1 [1]
Edited text from http://en.wikipedia.org/wiki/Earth%27s_atmosphere

Approximate composition of seawater by element:

Need to find a definitive source for these figures

Approximate figures for the twenty most abundant elements in the earth's crust:

Also need to have a list based on ease of extraction and energy required

@@ Line 19: / Line 19: @@
 |colspan=2 |<br>'''Not included in above dry atmosphere:'''
 |-
-|Water vapour ||Highly variable but typically 1%
+|Water vapour ||Highly variable but typically 1% <!--need to do similar working on this (as with carbon above) to show as hydrogen-->
 |}