QCM.##
#
Partie#I.#Mobilisation#des#connaissances.#Génétique#et#évolution.#10#points.# # ############
#
1.#La#bipédie#chez#l’Homme#est#associée#à#la#:!
S0',#$.#272.*0-4078.40.((2$27')0#480)%0(b7M0-40(8l*%0
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S0-,0$.#272.*0-4078.40.((2$27')0P0)m'6'*70-40(8l*%0
0
2.0L'homme#se#distingue#du#chimpanzé#par#:!
S0',0-%#0Y'9&%#0$)4#0).*K4%#034%0)%#0&8'#0
S0&,04*%0#%4)%0(.48&48%0-%0)'0(.).**%06%87M&8')%0
S0(,0)%0$.4(%0-%0)'09'2*0.$$.#'&)%0'4/0'478%#0-.2K7#0
S0-,0-%#0Y'9&%#0$)4#0(.487%#034%0)%#0&8'#0
0
3.!Le#dernier#ancêtre#commun#de#l'homme#et#du#chimpanzé#devait#:!
S0',0$.##M-%80$)4#0-%0('8'(7Q8%#0-M826M#0;2**.6'72.*#<0%*0(.994*0'6%(0)%0(C29$'*5M034m'6%(0)mC.99%00
S0&,0$.##M-%80$)4#0-%0('8'(7Q8%#0-M826M#0;2**.6'72.*#<0%*0(.994*0'6%(0)mC.99%034m'6%(0)%0(C29$'*5M0
S0(,0$.##M-%80-%#0('8'(7Q8%#0-M826M#0;2**.6'72.*#<0(.994*#0P0)mC.99%0%70'40(C29$'*5M00
S0-,0*%0$.##M-%80'4(4*0('8'(7Q8%0-M826M0;2**.6'72.*<0%*0(.994*0'6%(0)mC.99%0%70)%0(C29$'*5M0#
#
4.#Les#caryotypes#de#l'Homme#et#du#Chimpanzé#:!
S0',0#.*702-%*7234%#00
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S0(,0#.*707%)#034%0(%)420-40(C29$'*5M0$.##Q-%0*.7'99%*704*%0$'28%0-%0(C8.9.#.9%#0%*09.2*##
S0-,#-2WWQ8%*704*234%9%*70$'80)'0$'28%0-%0(C8.9.#.9%#0#%/4%)#00#
#
2ème#PARTIE#–#Exercice#1.#Le#domaine#continental#et#sa#dynamique.#4#points.0
0
1.#L’épaisseur#de#la#croûte#au#niveau#de#la#Vanoise#(document#1)#est#due#à#:0
S0',0)U%9$2)%9%*70-%09'*7%'40)27C.#$CM8234%0
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S0(,0)U%9$2)%9%*70-UM('2))%#0-%0(8.n7%0(.*72*%*7')%0
S0-,0)U%9$2)%9%*70-UM('2))%#0-%0(8.n7%0.(M'*234%0
0
On!rappelle!que!les!migmatites!sont!des!roches!issues!de!la!fusion!partielle!des!roches!de!la!croûte!
continentale.!
0
2.#Pour#que#des#migmatites#se#forment,#il#faut#que#la#croûte#continentale#:0
S0',0'77%2K*%04*%0M$'2##%4802*WM82%48%0P0@[0o90
S0&,0'77%2K*%04*%0M$'2##%480#4$M82%48%0P0@Z0o90
S0(,0'77%2K*%04*%0M$'2##%480(.9$82#%0%*78%0@[0%70@Z0o90
S0-,0'77%2K*%04*%0M$'2##%480-.*70)%#0(.*-272.*#0*%0#.*70$'#078.46M%#0#480>%88%0
0
3.#Au#niveau#des#Alpes,#les#roches#de#la#croûte#peuvent#entrer#en#fusion#en#profondeur#:0
S0',0#.4#0)%09'##2W0-%0)'0H'*.2#%0
S0&,0#.4#0)%09'##2W0-%#0E.8*%#0
S0(,0#.4#0)'0$)'2*%0-40Ib0
S0-,0*4))%0$'870
0
4.#Le#front#pennique#(FP)#:#
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S0&,0'WW%(7%0)%0#.()%09'2#0$'#0)%#08.(C%#0#M-29%*7'28%#0-%0#48W'(%0
S0(,0%#70#274M0P0)'0)2927%0%*78%0#.()%0%48.$M%*0%70#.()%0'W82('2*0
S0-,0'WW%(7%0)'0(8.n7%0-'*#0#.*0%*#%9&)%0
0
5.#Le#contact#anormal#du#front#pennique#(FP)#s’est#produit#:#
S0',0'6'*70)%0BM*.5.p34%0;>%872'28%<0
S0&,0'$8Q#0)%0BM*.5.p34%0;>%872'28%<0
S0(,0'40(.48#0-40c48'##234%0
S0-,0'40(.48#0-40I%892%*0%70-40>82'#0
0
6.#La#non-continuité#du#contact#anormal#C2#s’explique#par#:#
S0',04*%0'&#%*(%0-%0#M-29%*7'72.*0
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S0(,0)U'$$'8272.*0$)4#07'8-26%0-40#.99%70R\ZR090
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