Quiz — 15.4 - Mise en orbite géostationnaire.pdf

Question 1 sur 10 20:00

[{"id":48379,"question":"Quelle est la période orbitale d'un satellite géostationnaire ?","option_a":"12 heures","option_b":"24 heures","option_c":"48 heures","option_d":"365 jours","option_e":"","option_f":"","bonne_reponse":"b","explication":"Un satellite géostationnaire a une période orbitale égale à la période de rotation de la Terre, soit 24 heures.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"12 heures\", \"b\": \"24 heures\", \"c\": \"48 heures\", \"d\": \"365 jours\"}","_debug_options_count":4},{"id":48380,"question":"À quelle altitude se trouve une orbite géostationnaire ?","option_a":"1 000 km","option_b":"35 786 km","option_c":"50 000 km","option_d":"100 000 km","option_e":"","option_f":"","bonne_reponse":"b","explication":"L'altitude d'une orbite géostationnaire est d'environ 35 786 km au-dessus de la surface de la Terre.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"1 000 km\", \"b\": \"35 786 km\", \"c\": \"50 000 km\", \"d\": \"100 000 km\"}","_debug_options_count":4},{"id":48381,"question":"La 3ème loi de Kepler relie la période orbitale d'un satellite à son demi-grand axe.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La 3ème loi de Kepler relie le carré de la période orbitale au cube du demi-grand axe de l'orbite.","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":48382,"question":"Quelle force maintient un satellite en orbite géostationnaire ?","option_a":"Force magnétique","option_b":"Force électrique","option_c":"Force gravitationnelle","option_d":"Force de frottement","option_e":"","option_f":"","bonne_reponse":"c","explication":"La force gravitationnelle exercée par la Terre maintient le satellite en orbite.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"c\", \"options\": {\"a\": \"Force magnétique\", \"b\": \"Force électrique\", \"c\": \"Force gravita","_debug_options_count":4},{"id":48383,"question":"Un satellite géostationnaire a une vitesse orbitale constante.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La vitesse orbitale d'un satellite géostationnaire est constante car son orbite est circulaire et son altitude est fixe.","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":48384,"question":"Quelle est la vitesse orbitale approximative d'un satellite géostationnaire ?","option_a":"1 km\/s","option_b":"3,07 km\/s","option_c":"7,8 km\/s","option_d":"11,2 km\/s","option_e":"","option_f":"","bonne_reponse":"b","explication":"La vitesse orbitale d'un satellite géostationnaire est d'environ 3,07 km\/s.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"1 km\/s\", \"b\": \"3,07 km\/s\", \"c\": \"7,8 km\/s\", \"d\": \"11,2 km\/s\"}}","_debug_options_count":4},{"id":48385,"question":"Les satellites géostationnaires sont principalement utilisés pour :","option_a":"L'exploration des planètes","option_b":"Les télécommunications et la météo","option_c":"L'observation des étoiles","option_d":"Les vols habités","option_e":"","option_f":"","bonne_reponse":"b","explication":"Les satellites géostationnaires sont principalement utilisés pour les télécommunications, la télévision par satellite et les prévisions météorologiques.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"L'exploration des planètes\", \"b\": \"Les télécommunications et l","_debug_options_count":4},{"id":48386,"question":"La force gravitationnelle diminue avec le carré de la distance entre le satellite et le centre de la Terre.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"a","explication":"La force gravitationnelle suit la loi de l'inverse du carré de la distance (F ∝ 1\/r²).","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":48387,"question":"Quel est le demi-grand axe d'une orbite géostationnaire ?","option_a":"35 786 km","option_b":"42 164 km","option_c":"50 000 km","option_d":"6371 km","option_e":"","option_f":"","bonne_reponse":"b","explication":"Le demi-grand axe d'une orbite géostationnaire est d'environ 42 164 km (rayon de la Terre + altitude).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"b\", \"options\": {\"a\": \"35 786 km\", \"b\": \"42 164 km\", \"c\": \"50 000 km\", \"d\": \"6371 km\"}}","_debug_options_count":4},{"id":48388,"question":"Un satellite en orbite géostationnaire doit avoir une inclinaison de :","option_a":"0°","option_b":"30°","option_c":"45°","option_d":"90°","option_e":"","option_f":"","bonne_reponse":"a","explication":"Un satellite géostationnaire doit avoir une inclinaison nulle (0°) par rapport à l'équateur pour rester fixe au-dessus d'un point donné.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0,"_debug_answer_data_type":"string","_debug_answer_data_preview":"{\"correct\": \"a\", \"options\": {\"a\": \"0°\", \"b\": \"30°\", \"c\": \"45°\", \"d\": \"90°\"}}","_debug_options_count":4}]