
Quiz de Acústica: Resposta B
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5th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é o som?
Uma forma de luz
Uma vibração que se propaga no ar
Um tipo de energia elétrica
Um movimento de calor
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a unidade de medida da frequência do som?
Metro
Hertz (Hz)
Segundo
Decibel (dB)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é necessário para que o som se propague?
Vácuo
Um meio material (sólido, líquido ou gasoso)
Luz
Eletricidade
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o nome do aparelho usado para medir a intensidade do som?
Termômetro
Decibelímetro
Barômetro
Voltímetro
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que acontece com a velocidade do som quando ele passa do ar para a água?
Diminui
Aumenta
Fica igual
Some
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é a principal característica que diferencia um som agudo de um som grave?
Intensidade
Frequência
Duração
Timbre
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é eco?
O som que nunca para
A reflexão do som em uma superfície
O som que se propaga no vácuo
O som que muda de cor
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