
Vad är ljud? NE
Authored by Marcus Johansson
Other
5th Grade

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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vad är ljud?
En form av ljus
Vibrationer i luften
En kemisk reaktion
Elektriska impulser
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Varför hörs det inget ljud i rymden?
Det är för kallt
Det finns ingen luft
Gravitationen absorberar ljud
Ljudet reflekteras bort
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vad är en ljudvåg?
En ström av elektroner
En blandning av gassorter
Områden med tätare och tunnare luft
En stråle av fotoner
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vad beskriver enheten decibel (dB)?
Ljudets hastighet
Ljudets tonhöjd
Ljudets styrka
Ljudets frekvens
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vid vilken ljudstyrka kan man få hörselskador?
50 dB
85 dB
100 dB
150 dB
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vad betyder tonhöjd?
Hur högt ett ljud är på en skala
Hur snabbt ljudvågor svänger
Ljudets styrka
Ljudets riktning
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Vilket material leder ljud snabbast?
Luft
Vatten
Stål
Glas
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