
Matriz de LED
Authored by MARIA GORGES
Science
1st Grade
Used 6+ times

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6 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que é uma matriz de LED?
Um grupo de lâmpadas incandescentes
Um conjunto organizado de pequenos LEDs
Um tipo de bateria
Um fio de cobre
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o principal componente de uma matriz de LED?
Motor elétrico
LED
Alto-falante
Papel
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Para que serve uma matriz de LED?
Para aquecer alimentos
Para mostrar imagens ou letras com luzes
Para guardar água
Para pintar paredes
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Onde podemos encontrar matrizes de LED?
Em livros
Em semáforos e painéis eletrônicos
Em árvores
Em caixas de papelão
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que acontece quando acendemos diferentes LEDs em uma matriz?
Nada muda
Formam-se desenhos ou letras diferentes
A matriz quebra
Os LEDs desaparecem
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Por que as matrizes de LED são usadas em relógios digitais?
Porque são barulhentas
Porque mostram números com luzes
Porque são pesadas
Porque não funcionam à noite
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