Quiz — devoir-de-contrôle-n°3--2011-2012(mosrati-chawki).pdf

Question 1 sur 10 20:00

[{"id":14909,"question":"Quelle est l'unité de mesure de la force dans le système international ?","option_a":"Newton (N)","option_b":"Pascal (Pa)","option_c":"Joule (J)","option_d":"Watt (W)","option_e":"","option_f":"","bonne_reponse":"a","explication":"L'unité de mesure de la force dans le système international est le Newton (N), en hommage à Isaac Newton.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Newton (N)\", \"b\": \"Pascal (Pa)\", \"c\": \"Joule (J)\", \"d\": \"Watt (W)","_debug_options_count":4},{"id":14910,"question":"La loi d'Ohm s'applique uniquement aux conducteurs ohmiques.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. La loi d'Ohm (U = R × I) ne s'applique qu'aux conducteurs ohmiques, c'est-à-dire ceux dont la résistance est constante.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":14911,"question":"Quel est le symbole chimique de l'élément oxygène ?","option_a":"O","option_b":"Ox","option_c":"O2","option_d":"Og","option_e":"","option_f":"","bonne_reponse":"a","explication":"Le symbole chimique de l'oxygène est 'O'. 'O2' représente la molécule de dioxygène, composée de deux atomes d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"O\", \"b\": \"Ox\", \"c\": \"O2\", \"d\": \"Og\"}}","_debug_options_count":4},{"id":14912,"question":"La photosynthèse permet aux plantes de produire :","option_a":"Du dioxygène (O2) et du glucose","option_b":"Du dioxyde de carbone (CO2) et de l'eau","option_c":"De l'énergie thermique","option_d":"Des minéraux","option_e":"","option_f":"","bonne_reponse":"a","explication":"La photosynthèse permet aux plantes de produire du dioxygène (O2) et du glucose à partir de dioxyde de carbone (CO2) et d'eau, en présence de lumière.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Du dioxygène (O2) et du glucose\", \"b\": \"Du dioxyde de carbone (C","_debug_options_count":4},{"id":14913,"question":"La vitesse d'un objet en mouvement rectiligne uniforme est constante.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"Vrai. En mouvement rectiligne uniforme, la vitesse reste constante en grandeur, en direction et en sens.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"Vrai\", \"b\": \"Faux\", \"c\": \"\", \"d\": \"\"}}","_debug_options_count":4},{"id":14914,"question":"Quelle est la formule chimique de l'eau ?","option_a":"H2O","option_b":"CO2","option_c":"NaCl","option_d":"CH4","option_e":"","option_f":"","bonne_reponse":"a","explication":"La formule chimique de l'eau est H2O, composée de deux atomes d'hydrogène et d'un atome d'oxygène.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"H2O\", \"b\": \"CO2\", \"c\": \"NaCl\", \"d\": \"CH4\"}}","_debug_options_count":4},{"id":14915,"question":"Quel phénomène physique explique la formation des arcs-en-ciel ?","option_a":"La réflexion de la lumière","option_b":"La réfraction et la dispersion de la lumière","option_c":"L'absorption de la lumière","option_d":"La diffraction","option_e":"","option_f":"","bonne_reponse":"b","explication":"La formation des arcs-en-ciel s'explique par la réfraction et la dispersion de la lumière à travers les gouttes d'eau, qui séparent les différentes couleurs.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"La réflexion de la lumière\", \"b\": \"La réfraction et la dispers","_debug_options_count":4},{"id":14916,"question":"La tension électrique se mesure en :","option_a":"Ampères (A)","option_b":"Volts (V)","option_c":"Ohms (Ω)","option_d":"Watts (W)","option_e":"","option_f":"","bonne_reponse":"b","explication":"La tension électrique se mesure en Volts (V), en hommage à Alessandro Volta.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Ampères (A)\", \"b\": \"Volts (V)\", \"c\": \"Ohms (Ω)\", \"d\": \"Watts (W","_debug_options_count":4},{"id":14917,"question":"Un atome est électriquement neutre car :","option_a":"Il n'a pas de protons","option_b":"Il a autant d'électrons que de protons","option_c":"Il a plus de neutrons que de protons","option_d":"Il est composé uniquement de neutrons","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un atome est électriquement neutre car il possède autant d'électrons (chargés négativement) que de protons (chargés positivement).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Il n'a pas de protons\", \"b\": \"Il a autant d'électrons que de pro","_debug_options_count":4},{"id":14918,"question":"La loi de la gravitation universelle a été formulée par :","option_a":"Albert Einstein","option_b":"Isaac Newton","option_c":"Galilée","option_d":"Nikola Tesla","option_e":"","option_f":"","bonne_reponse":"b","explication":"La loi de la gravitation universelle a été formulée par Isaac Newton en 1687.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"Albert Einstein\", \"b\": \"Isaac Newton\", \"c\": \"Galilée\", \"d\": \"Nik","_debug_options_count":4}]