Machines simples
4th Grade
•25 Qs
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Machines simples
Quiz
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Science
•
4th Grade
•
Practice Problem
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Medium
Jean-Francois Gagne
Used 94+ times
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25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
On trouve des engrenages dans…
une pompe à eau
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Qui a dit : « Donnez-moi un point d’appui et je soulèverai le monde » ?
Thalès de Milet
Archimède
Aristarque
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Si la 1ère roue d’un engrenage a 8 dents et que la dernière en a 32, combien de tours fait la 1ère roue, quand la dernière en fait un ?
2 tours
3 tours
4 tours
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Dans un engrenage, une roue plus petite liée à une roue plus grande…
tourne plus vite
tourne plus lentement
cela dépend des autres roues de l'engrenage
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Vrai ou faux : une poulie fixe ne diminue pas l’effort.
Vrai
Faux
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Vrai ou faux : une poulie mobile ne permet pas de diminuer l’effort.
Vrai
Faux
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Vrai ou faux : un plan incliné permet de réduire l’effort à fournir.
Vrai
Faux
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