49% knows the answer to this question: "What animals built a 1000-foot dam discovered in Colorado's Rocky Mountain National Park? "

And do you know the answer to this one? "What instrument measures altitude?"

40% knows the answer to this question: "Which song was a hit for The Rolling Stones in 1965? "

And do you know the answer to this one? "Who is Billie Holiday?"

46% knows the answer to this question: "The Mojave Desert is partly in which of these states? "

And do you know the answer to this one? "Who is primarily known for devising the Dewey Decimal System?"

62% knows the answer to this question: "What do you call horizontal movement of water? "

And do you know the answer to this one? "Which of these scientific terms is defined as the Earth moving between the Sun and the Moon?"

39% knows the answer to this question: "Who is Edwin "Buzz" Aldrin? "

And do you know the answer to this one? "Of which country was Mohammad-Ali Rajai leader in the 80s?"

54% knows the answer to this question: "Skewer a dead animal on a spit and rotate it over a fire. It's especially yummy with poultry and pigs. What cooking technique is this? "

And do you know the answer to this one? "What 1968 George Romero movie, about zombies, was also released in some places as "Night of the Anubis"?"

47% knows the answer to this question: "By what name was Maria Eva Duarte de Peron popularly known throughout the world? "

And do you know the answer to this one? "What is the destruction of forests called?"

78% knows the answer to this question: "What is the common name for the currency of the Republic of India? "

And do you know the answer to this one? "What is strange about seahorses?"

77% knows the answer to this question: "Which is the correct name for the national airline of North Korea? "

And do you know the answer to this one? "A place that offers free Wi-Fi access is known as a what?"

75% knows the answer to this question: "What comes before dystrophy for a genetic disease? "

And do you know the answer to this one? "What is the name of the white liquid people drink to highlight X-eay images?"

62% knows the answer to this question: "Since sound travels through this gas nearly three times faster than it does through air, inhaling what gas makes you sound all squeaky? "

And do you know the answer to this one? "What was the official secret police of Nazi Germany and German-occupied Europe?"

81% knows the answer to this question: "The brain is usually said to consist of which colour of matter? "

And do you know the answer to this one? "What country's revolution started when troops fired on demonstrators in St. Petersburg?"