Les ondes
Authored by Laure d'Assonville
Physics
8th - 9th Grade
Used 123+ times
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17 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Lors d'une échographie pour déterminer la distance d séparant la sonde d'un organe observé, on utilise quelle relation?
d = v x t
d = t x v
d = v x t / 2
d = 2 x v x t
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quelles sont les ondes utilisées pour effectuer une échographie?
les ondes lumineuses
les ondes sonores
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Dans la relation d = v x t / 2, t est la durée mise par les ondes pour faire:
un aller entre la sonde et l'organe
un aller-retour entre la sonde et l'organe
un retour entre la sonde et l'organe
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Je me calcule en Hertz (Hz).
Le niveau sonore
La vitesse
La fréquence
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Lors de la puberté, la voix des garçons devient plus grave car...
la vitesse diminue
la vitesse augmente
la fréquence diminue
la fréquence augmente
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L'oreille humaine entend des sons de...
20 à 20 000 Hz
10 à 30 000 Hz
20 à 10 000 Hz
100 à 30 000 Hz
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La fréquence est le nombre...
de phénomènes par seconde
de mètres par seconde
de secondes par mètres
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