
Cidades Inteligentes - Conceitos de C.N.
Authored by Flávio Cunha
Science
2nd Grade
Used 1+ times

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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Potência é definida como a rapidez da transformação da Energia. Então, matematicamente:
Potência = Energia/Tempo
Potência = Tempo/Energia
Potência = Energia x Tempo
Potência = Energia + Tempo
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pouco menos da metade (47%) da potência solar é absorvida pelo solo e oceanos.
Verdadeiro
Falso
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Nome do EFEITO que Einstein explicou, e que está presente nas placas solares, para converter energia luminosa (fótons) em energia elétrica (corrente de elétrons).
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Quais os elementos de uma solução?
Soluto
Solvente
Sólido
Líquido
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Qual é a concentração (em %) de 20g de sal diluído em 80g de água?
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
pH=-log[H+]
Então, se [H+]=10-5mol/L é a concentração de H+ em um café, seu pH é
5
6
9
10
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A energia eólica é a energia cinética do ar.
Verdadeiro
Falso
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