B) Densité'des'roches'de'la'croûte'continentale'
!
Matériel'nécessaire':!
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Protocole':!
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I .5#,')%!,)!5&,'6)!Ben'cm3C!3)!$G#>')!.$G#*(+,,&*!3)!%&$G)!)*!,)!-,#J#*(!3#*/!'*)!.-%&'5)(()!
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D.#,+/)=!'*'tableau'de'résultats'et'commentez)le.'
'
'
C) Nature'des'roches'continentales'
'
Matériel'nécessaire':'
I 6+$%&/$&-)!-&,#%+/#*(!
I ,&'-)!!
I .$G#*(+,,&*/!3)!7%#*+()!)(!3)!7*)+//!
'
Protocole':'
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I de'roches'magmatiques'B00<S2!3'!5&,'6)C!$&66)!,)/!7%#*+()/8!R)!(A-)!3)!%&$G)/!
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6+$#/!B;+&(+()!&'!6'/$&5+()C8!
")!7*)+//!)/(!'*)!%&$G)!6.(#6&%-G+>')!4&%6.)!7.*.%#,)6)*(!3:'*!
)6-+,)6)*(!3)!,+(/!/&6;%)/!)(!3)!,+(/!$,#+%/!P!,)/!,+(/!$,#+%/!$&*(+)**)*(!3'!
>'#%(=!)(!3)/!4),3/-#(G!K!,)/!,+(/!/&6;%)/!3)/!6+$#/8!