10 questions to test your knowledge
Question 1 of 10
Who invented the first engine-powered airplane?
Question 2 of 10
Which dog has the best tracking skill?
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Question 3 of 10
What device controls temperature with a switch?
Question 4 of 10
What is a "placebo"?
Question 5 of 10
Every second, 100,000 cubic feet of water pours over what?
Question 6 of 10
An infectious particle that can only reproduce inside a living cell is called what?
Question 7 of 10
What name is used specifically to describe the region around the South Pole?
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Question 8 of 10
The process by which plants make food is called what?
Question 9 of 10
How is best defined the medical term "retrospective study"?
Question 10 of 10
Mars was the Roman god of what?
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