Testez vos connaissances : Quiz interactif sur les notions clés

Question 1 sur 10 10:00

[{"id":27158,"question":"Quelle est la formule de la vitesse moyenne ?","option_a":"v = d\/t","option_b":"v = t\/d","option_c":"v = d×t","option_d":"v = 2πr\/t","option_e":"","option_f":"","bonne_reponse":"A","explication":"La vitesse moyenne se calcule en divisant la distance parcourue (d) par le temps écoulé (t).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27159,"question":"Un triangle rectangle a toujours un angle de 90 degrés.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"Par définition, un triangle rectangle possède un angle droit (90°).","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27160,"question":"Quelle est la capitale de la Tunisie ?","option_a":"Tunis","option_b":"Sfax","option_c":"Sousse","option_d":"Gabès","option_e":"","option_f":"","bonne_reponse":"A","explication":"Tunis est la capitale de la Tunisie et son plus grand centre économique.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27161,"question":"La photosynthèse permet aux plantes de produire de l'oxygène.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La photosynthèse est le processus par lequel les plantes transforment le CO₂ en O₂ grâce à la lumière.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27162,"question":"Quel est le résultat de 5² + 3² ?","option_a":"25","option_b":"34","option_c":"16","option_d":"64","option_e":"","option_f":"","bonne_reponse":"B","explication":"5² = 25 et 3² = 9. 25 + 9 = 34.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27163,"question":"La loi d'Ohm s'exprime par la formule U = R\/I.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"La loi d'Ohm est U = R×I, où U est la tension, R la résistance et I l'intensité.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27164,"question":"Quelle est la racine carrée de 144 ?","option_a":"10","option_b":"12","option_c":"14","option_d":"16","option_e":"","option_f":"","bonne_reponse":"B","explication":"12 × 12 = 144, donc √144 = 12.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27165,"question":"Un polygone à 5 côtés est appelé un hexagone.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"B","explication":"Un polygone à 5 côtés est un pentagone. Un hexagone en a 6.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27166,"question":"Quelle est la valeur de π (pi) arrondie à deux décimales ?","option_a":"3,12","option_b":"3,14","option_c":"3,16","option_d":"3,20","option_e":"","option_f":"","bonne_reponse":"B","explication":"La valeur approchée de π est 3,14159..., donc arrondie à 3,14.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0},{"id":27167,"question":"La respiration cellulaire produit de l'énergie sous forme d'ATP.","option_a":"Vrai","option_b":"Faux","option_c":"","option_d":"","option_e":"","option_f":"","bonne_reponse":"A","explication":"La respiration cellulaire permet aux cellules de produire de l'ATP, la molécule d'énergie.","points":1,"type":"qcm","actif":1,"section_id":null,"ordre":0}]