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9th Grade
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Acústica
Quiz
•
Science
•
9th Grade
•
Practice Problem
•
Easy
Paulo Silva
Used 9+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
O ouvido humano consegue perceber sons de frequências entre quais faixas de frequência?
25 Hz e 30 Hz
15 Hz e 30 Hz
20 Hz e 20 000 Hz
20 Hz e 30 Hz
2.
OPEN ENDED QUESTION
3 mins • 5 pts
As ondas sonoras extremamente graves, com frequências abaixo dos 20 Hz são identificadas como:
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3.
FILL IN THE BLANK QUESTION
1 min • 5 pts
É considerado como um som de frequência superior àquela que o ouvido do ser humano pode perceber, ou seja, acima de 20 000 Hz.
4.
OPEN ENDED QUESTION
3 mins • 5 pts
O som é uma onda do tipo mecânica por qual motivo?
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5.
OPEN ENDED QUESTION
3 mins • 5 pts
A velocidade do som depende de características apresentadas pelo meio de propagação" sendo assim, responda:
O som é mais rápido nos sólidos, líquidos ou gases?
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6.
OPEN ENDED QUESTION
3 mins • 5 pts
A diferença entre o ar quente e frio é a densidade. Devido a esta característica concluímos que o som é mais rápido nos dias quentes ou nos dias frios?
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7.
OPEN ENDED QUESTION
3 mins • 5 pts
Defina eco.
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