Géométrie dans l'espace
Pour aller plus loin (Ancien programme) - Mathématiques 5e
Exercice 1 : Lire les coordonnées géographiques d'une ville sur terre à partir des angles
Sur le schéma ci-dessous, le point D symbolise la ville de Shillong (Inde).
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On pourra faire pivoter la figure en cliquant dessus.
Légende
- Méridien d'origine Greenwich 0°
- Méridien du point D
- Équateur 0°
- Parallèle du point D
- N : Pôle nord
- S : Pôle sud
- C : Centre de la terre
- D : Ville de Shillong
Sachant que \( \widehat{SCE} = 90 ° \), \( \widehat{DCN} = 64 ° \), \( \widehat{ABD} = 92 ° \) et \( \widehat{ECD} = 26 ° \), donner les coordonnées géographique de la ville de Shillong (Inde).
Par exemple:
Par exemple:
- Pour la ville de Libreville (Gabon) on donnera une réponse de la forme \(\left(0°; 9° E\right)\)
- Pour la ville de Woking (Royaume-Uni) on donnera une réponse de la forme \(\left(51° N; 1° O\right)\)
Exercice 2 : Calcul d'un rayon à partir de l'aire d'une sphère
Soit une sphère d'aire \(169\:cm^{2}\). Calculer son rayon.
On donnera le résultat sous la forme d'une valeur exacte avec \( \sqrt{\pi } \).Exercice 3 : Lire latitude ou longitude d'une ville sur terre à partir des angles
Sur le schéma ci-dessous, le point D symbolise la ville de Ramagundam (Inde).
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On pourra faire pivoter la figure en cliquant dessus.
Légende
- Méridien d'origine Greenwich 0°
- Méridien du point D
- Équateur 0°
- Parallèle du point D
- N : Pôle nord
- S : Pôle sud
- C : Centre de la terre
- D : Ville de Ramagundam
Sachant que \( \widehat{DCN} = 71 ° \), \( \widehat{ECD} = 19 ° \), \( \widehat{SCE} = 90 ° \) et \( \widehat{ABD} = 79 ° \), donner la latitude de la ville de Ramagundam (Inde).
Exemples de format de réponses attendu : \(80°N\), \(60°S\), \(80°E\) ou \(20°O\)
Exemples de format de réponses attendu : \(80°N\), \(60°S\), \(80°E\) ou \(20°O\)
Exercice 4 : Calculer la longueur de l'équateur ou d'un méridien à partir du rayon/diamètre de la planète
Sur une planète de rayon \( 2\:500\:\text{km} \), on définit les méridiens de la même manière que sur Terre.
Quelle est la longueur d'un méridien de cette planète ?
On arrondira le résultat au kilomètre près, suivi de l'unité qui convient.
On arrondira le résultat au kilomètre près, suivi de l'unité qui convient.
Exercice 5 : Lire latitude ou longitude d'une ville sur terre à partir des parallèles et méridiens
Sur le schéma ci-dessous, le point D symbolise la ville de Zamora (Mexique).
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On pourra faire pivoter la figure en cliquant dessus.
Légende
- Méridien d'origine Greenwich 0°
- Méridiens (espacés de 20°)
- Équateur 0°
- Parallèles (espacés de 20°)
- N : Pôle nord
- S : Pôle sud
- D : Ville de Zamora
Donner la latitude de la ville de Zamora (Mexique).
Exemples de format de réponses attendu : \(80°N\), \(60°S\), \(80°E\) ou \(20°O\)
Exemples de format de réponses attendu : \(80°N\), \(60°S\), \(80°E\) ou \(20°O\)
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Nos exercices sont conformes aux programmes de l'Éducation Nationale de la 6e à la Terminale. Grâce à Kwyk, les élèves s'entraînent sur du calcul mental, des exercices d'arithmétique et de géométrie, des problèmes et des exercices d'application, des exercices d'algorithmique et de python, des annales du brevet des collèges et du baccalauréat. Nos exercices sont proposés sous forme de réponse libre et/ou de QCM.
Afin d'assurer un entraînement efficace et pertinent aux élèves, chaque exercice est généré avec des valeurs aléatoires. Les élèves peuvent s'entraîner grâce aux devoirs donnés sur Kwyk par leurs professeurs et aux devoirs générés par notre outil utilisant l'IA mais aussi grâce aux différents modules de travail en autonomie mis à disposition sur leur espace personnel. Pour les niveaux du collège, les élèves ont également accès à des cours constitués d'une partie théorique et d'une partie pratique.
Avec Kwyk, vous mettez toutes les chances du côté des élèves pour que les différents théorèmes, propriétés et définitions n'aient plus aucun secret pour eux.
En 2024, plus de 40 000 000 d'exercices ont été réalisés sur Kwyk en Mathématiques.
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Français | Physique-Chimie