
Som 8ºano
Authored by Ari_Madu :)
Physics
8th Grade
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13 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é uma onda?
Material que vibra
Propagação de uma perturbação / vibração
2.
MULTIPLE CHOICE QUESTION
1 min • 3 pts
Em qual material o som propaga-se mais facilmente?
Água
Ar
Espaço
Mesa
3.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
Os pontos A, B e C representam...
A-Crista;
B-Ponto de equilíbrio;
C-Ventre ou vale.
A- Ponto de equilíbrio;
B-Crista;
C-Ventre ou vale.
A- Ponte de equilíbrio;
B-Ventre ou vale;
C-Crista
A-Ventre ou vale;
B-Ponto de equilíbrio;
C-Crista
4.
MULTIPLE CHOICE QUESTION
30 sec • 4 pts
Existem duas zonas. Qual a zona dos pontos vermelhos e qual a zona dos pontos verdes?
vermelhos: zona de rarefação;
verdes: zona de compressão
vermelhos: zona de compressão
verdes: zona de rarefação
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
A unidade de frequência no Sistema Internacional (SI) é...
... segundo (s)
... metro por segundo (m/s)
... hertz (Hz)
... decibel (dB)
6.
MULTIPLE CHOICE QUESTION
1 min • 4 pts
A unidade no Sistema Internacional (SI) do período de uma onda sonora é ...
... metro (m)
... Hertz (Hz)
... segundo (s)
... centimetro (cm)
7.
FILL IN THE BLANK QUESTION
2 mins • 6 pts
Frequência (F) = 1 : Período (T) e Período (T) = 1 : ____
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