
Memo_Sons_3e
Authored by Phil ManHal
Physics
9th Grade
Used 10+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La vitesse du son dans l'air est environ égale à
340 m/s
1500 m/s
5600 m/s
20 m/s
300 km/h
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le son peut se propager dans le vide.
Vrai
Faux
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Le son a besoin d"une matière pour se propager.
Vrai
Faux
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Lorsqu'un son se propage dans l'air, une partie de cet l'air se met à vibrer.
Vrai
Faux
5.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
Le son peut se propager dans :
l'eau
l'air
les métaux
le bois
le vide
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Les ultrasons sont des vibrations sonores dont les fréquences sont :
inférieures à 20 Hz
supérieures à 20 kHz
comprises entre 20 Hz et 20 kHz
ça n'existe pas
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Les infrasons sont des vibrations sonores dont les fréquences sont :
inférieures à 20 Hz
supérieures à 20 kHz
comprises entre 20 Hz et 20 kHz
ça n'existe pas
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