Developer's DescriptionBy Trivia QuizzesWhy is the sky blue. In which state of matter does sound travel the fastest? What should you put into pure water in order to pass electric...Why is the sky blue? In which state of matter does sound travel the fastest? What should you put into pure water in order to pass electric current through it? In this Physics Quiz you will learn new facts and test your knowledge of physics.Questions and answers are shuffled randomly every time you play. You can skip a question, if you don't know the answer. Play multiplayer one on one with your friends!