Уменя не получается составить 5 вопросов к предложению. sputnik is one of the russian words which became internationally known

Is sputnik one of the Russian words which became internationally known?

Is sputnik one of the Russian or German words which became internationally known?

What is  one of the Russian words which became internationally known?

Sputnik is one of the Russian words which became internationally known,isn't it?

What is sputnik?