Formulate your hypothesis and test your findings with our continuing trivia series featuring questions on general science topics.
What is the common unit of measurement for the relative loudness of sound?
What is the chemical symbol for sodium on the periodic table of elements?
Which well-known scientist wrote the novel "Contact," later adapted for film, about mankind's first contact with extraterrestrial intelligence?
Covering 2.7 million square miles of the Earth's surface, the Amazon rainforest produces ____ percent of the Earth's oxygen.
In 1961, which man became the first person to enter outer space?
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