
EXAMEN TRIMESTRAL SEPTIMO 2021
Authored by karla garcia
Science
8th Grade
Used 8+ times

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12 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Al expresar 500 notación científica, la respuesta correcta es:
5 x 10 2
0.05
5 x 10 -2
5 x 10 -3
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Las siguientes formulas: CO2, H20, N02 son ejemplos de:
Elementos
compuestos
mesclaz
otros
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
¿Cuál de las siguientes unidades se utiliza para medir el volumen?
metro
segundo
litros
newton
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
¿Cuál es el peso de un objeto colocado en la superficie de la tierra, si la masa del objeto es de 53.1 kg?
Fórmula: Peso = masa x gravedad. g= 9.8 m/s2
450 N
520.38 N
52.38 N
4500 N
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Un móvil cuya masa es de 15 kg se desplaza con velocidad de 2.7 m/s. ¿Cuál es su energía cinética? Fórmula: Ec=1/2mv2 , en donde, Ec: Energía cinética, m: masa, v: velocidad.
20.25 J
40.29 J
56.48 J
109.35
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
El nombre del siguiente elemento N es:
Hidrogeno
carbono
nitrogeno
sodio
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
La fórmula correcta que representa la energía potencial es:
Ep = masa x gravedad x altura
Ep = masa x gravedad x tiempo
Ep= masa x altura x tiempo
Ep = masa x altura x velocidad.
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