
Akustik 1: Vad är ljud?
Quiz
•
Physics
•
7th - 9th Grade
•
Practice Problem
•
Easy
Rebecca Stafford
Used 301+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ljud är en svängning i _______ som skapar ___________.
lufttrycket, rörelseenergi
luftmolekyler, vibrationer
öronen, nervimpulser
rymden, hallucinationer
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_______ är förtätningar och förtunningar av luften.
Decibel
Resonans
Hertz
Ljudvågor
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Antalet svängningar per sekund heter:
friktion
resonans
öronslag
frekvens
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Enheten för frekvens är:
Hertz (Hz)
Frekv (Fz)
Decibel (dB)
Millimeter (mm)
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1 Hertz = 1 svängning per:
minut
sekund
millisekund
timme
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Det mänskliga örats frekvensområde är ungefär _______ Hz.
1 till 100
0 till 2 000 000
20 000 till 50 000
20 till 20 000
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ett fysiskt objekt som sänder ut ljud heter:
ljudkälla
ljudsändare
ljudobjekt
screamy thing
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