EXAMEN Cours – Enveloppes de la Terre 20

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Les!éléments!chimiques!de!masse!atomique!supérieure!au!fer!ont!été!formés!dans!:!
❒!les!géantes!rouges!!❒!les!naines!brunes!!❒!les!naines!blanches!!❒!les!supernovae!!!
❒ les!supergéantes!
La!composition!moyenne!de!la!Terre!est!similaire!à!celle!:!
❒!des!météorites!de!type!chondrite!! ! ❒!des!météorites!de!type!achondrite!!
❒ de!la!surface!du!Soleil!! ! ! ❒!des!roches!volcaniques!des!océans! !
❒ des!autres!planètes!telluriques!
Le!gaz!le!plus!abondant!de!l’atmosphère!terrestre!est!:!
❒!le!dioxygène!(O2)!❒!le!dioxyde!de!carbone!(CO2)!!❒!la!vapeur!d’eau!(H2O)!
❒!le!diazote!(N2)!!!!❒!l’argon!(Ar)!
Un!gabbro!est!une!roche!:!
❒!basique!volcanique ❒!basique!plutonique!❒!acide!volcanique!❒!acide!plutonique
❒!métamorphique !
Les!éclogites!sont!des!roches!métamorphiques!qui!témoignent!de!:!
❒!basses!températures!!❒!hautes!températures!❒!basses!pressions!!❒!hautes!pressions!!
❒!présence!de!fluides!
NUMÉRO!D’ANONYMAT!:! ! ! ! !
L1!–!UE!Géosciences!1!–!Contrôle*terminal*–*3*juin*2015*–*Durée&suggérée&:*1h15min*
NOTE!:!
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& & (ii)&Vos&réponses&doivent&toutes&tenir&sur&l’énoncé,&dans&l’espace&prévu&à&cet&effet&(du&
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& & (iii)&Rendre&l’énoncé&à&l’intérieur&de&la&copie&d’examen&après&en&avoir&rempli&l’entête&et&
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