Alfred J Gross invented this for doctors, who didn't like it, although the last people to use it were hospital doctors. Mind you, the tech behind it also powers garage openers. What is it?
At 11:38 a.m., on January 28, 1986, just 74 seconds into its 10th mission, an O-ring ruptured, setting off a fiery explosion in the main fuel tank of which space shuttle?
Wood's glass, which blocks most wavelengths of light, was originally used to encode messages. What kind of light does it let through?
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Quiz about History
How many retries did you need?
Average Score: 7
100% knows the answer to this question:
"Which country declared itself independent from France in March 1956?
"
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Quiz about History
How many retries did you need?
Average Score: 7
100% knows the answer to this question:
"Which of these is a real book release from 2015, the latest in a long running series?
"
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10 questions about history!
go to quiz
Average Score: 8
100% knows the answer to this question:
"What was the name of the US's first music chart, which started recording sales in August 1958?
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History Trivia Quiz
Are you smart enough to this quiz?
Average Score: 7
100% knows the answer to this question:
"What was Thomas Fairfax's main reason for resigning from the English army?
"
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History Trivia Quiz
Scoring higher than a 6 is impossible!
Average Score: 8
100% knows the answer to this question:
"In 2014, the International Court of Justice ruled that what country should stop its whaling program?
"
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Test your History skills
Let us know how you did in the comments
Average Score: 7
98% knows the answer to this question:
"In 1966, French and British media falsely report the death of what famous person?
"
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History Quiz
Please share your score no matter how low or high
Average Score: 7
100% knows the answer to this question:
"In which century was pioneering nurse and heroine of the Crimean War Mary Seacole born?
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History Trivia Quiz
Scoring higher than a 6 is impossible!
Average Score: 9
99% knows the answer to this question:
"Prince Rainier III of Monaco married which Hollywood actress?
"
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HARD History Quiz
You will make at least 6 mistakes in this one
Average Score: 7
90% knows the answer to this question:
"Violet Gibson was a rich Irish woman with paranoid religious delusions. In 1926, she fired a shot at what dictator, shooting him in the nose after he opened a hospital in Rome?
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Geography Quiz
Find out if you belong to the 1%
Average Score: 9
100% knows the answer to this question:
"What breed of dogs originated in Afghanistan?
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Challenging Geography Quiz
We hope you can handle this quiz!
Average Score: 8
100% knows the answer to this question:
"Dortmund and Frankfurt are major cities in which European country?
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Have you ever been to Japan?
HARD Geography Quiz
Average Score: 6
100% knows the answer to this question:
"In what country was Citroen founded in 1919?
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Geography Quiz
You won't score a 6 or higher!
Average Score: 7
100% knows the answer to this question:
"With 1,000 plus rooms, what is the largest inhabited castle in the world?
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Hard Geography Quiz
You won't score a 6 or higher!
Average Score: 9
100% knows the answer to this question:
"Which part of the UK has the largest population?
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Only an Aussie can score a perfect 10 in this quiz!
Play Now
Average Score: 8
100% knows the answer to this question:
"By what name are Australian women known generically?
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HARD Geography Quiz
This really is a hard one!
Average Score: 6
100% knows the answer to this question:
"Malta achieved independence from which European country in 1964?
"
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Play This Geography Quiz Now!
It's going to be impossible to score a 6+
Average Score: 6
100% knows the answer to this question:
"Which country lies directly south of Mongolia?
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Geography Quiz
10 questions most people will struggle with
Average Score: 7
93% knows the answer to this question:
"Which best describes the Wailing Wall?
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Music Quiz
Can you do better than a 5 out of 10?
Average Score: 9
100% knows the answer to this question:
"In what song does Dolly Parton sing: "What a way to make a livin' - Barely gettin' by - Its all takin' - And no givin"?
"
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Challenging Music Quiz
We challenge you to do better than a 5 out of 10
Average Score: 8
99% knows the answer to this question:
"Who "stuck a feather in his hat and called it macaroni"?
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How often do you listen to music?
HARD Music Quiz
Average Score: 7
100% knows the answer to this question:
"Coolio reworked Stevie Wonder's "Pasttime Paradise," turning it into what song?
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Challenging Music Quiz
We challenge you to do better than a 5 out of 10
Average Score: 8
99% knows the answer to this question:
"Who "stuck a feather in his hat and called it macaroni"?
"
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Play Music Quiz
We bet you're not a musician!
Average Score: 9
100% knows the answer to this question:
"Which record company was founded in Detroit by Berry Gordy, Jr, a former boxer, who applied many of the business techniques he'd seen working on the Ford assembly line?
"
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Music Quiz For Intelligent People
Are you smart enough?
Average Score: 7
100% knows the answer to this question:
"After a brief mid-career effort to play for the Detroit Lions, who included two of the Lions (Mel Farr and Lem Barney) portraying party-goers in the background of "What's Going On"?
"
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New Music Trivia
Can you answer all music questions correctly?
Average Score: 9
100% knows the answer to this question:
"Which of these is the name of a '60s song by Bob Dylan?
"
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How often do you listen to music?
HARD Music Quiz
Average Score: 7
100% knows the answer to this question:
"Coolio reworked Stevie Wonder's "Pasttime Paradise," turning it into what song?
"
-
Music Quiz
How often do you listen to music?
Average Score: 8
100% knows the answer to this question:
"Which of these groups would you most associate with Diana Ross?
"
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Don't bother beating my score
Science Quiz
Average Score: 7
84% knows the answer to this question:
"What do we call the teeth we grind our food with?
"
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Play This Science Quiz
Only for quizzers with an high IQ
Average Score: 9
100% knows the answer to this question:
"Most of the oxygen in the air is produced by what chemical process?
"
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Can you score a perfect 10 in this Science quiz?
10 questions
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100% knows the answer to this question:
"What is removed during an appendectomy?
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Hard Science Quiz
Tell us if you scored an impossible 10
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100% knows the answer to this question:
"The word "lunar" means something related to what?
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Are you a scientist?
Proof by beating her score!
Average Score: 7
100% knows the answer to this question:
"What type of drug causes an increase in urination?
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Most people can't even score 5 out of 10 in this science quiz
Play Science Quiz
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100% knows the answer to this question:
"What is the addictive chemical in cigarettes?
"
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Don't bother beating my score
Science Quiz
Average Score: 7
100% knows the answer to this question:
"What do we call the teeth we grind our food with?
"
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Science Quiz
Nobody can score a perfect 10
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100% knows the answer to this question:
"In weather terms, what is the opposite of heat?
"
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Nobody can score higher than a lousy 5
Science Quiz
Average Score: 7
90% knows the answer to this question:
"What do we call the teeth we grind our food with?
"
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Who Sang These Songs?
No is able to score higher than a 6
Average Score: 9
97% knows the answer to this question:
"Who sang the famous song "Starman" (1972)
"
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Who Sang These Songs? - Sudden End Style
How many songs didn't you know?
Average Score: 0
0% knows the answer to this question:
"Who sang the famous song "I Left My Heart in San Francisco" (1962)?
"
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For people who are older than 40 this is going to be a hard quiz!
Who sang these songs from the 90s?
Average Score: 13
95% knows the answer to this question:
"Who sang the famous song "The Show Must Go On" (1991)
"
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Who Sang These Songs?
No is able to score higher than a 6
Average Score: 9
97% knows the answer to this question:
"Who sang the famous song "Starman" (1972)
"
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Who Sang These Songs?
How many songs did you know?
Average Score: 6
100% knows the answer to this question:
"Who sang the famous song "Just Can't Get Enough (live)" (1985)
"
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Who Sang These Songs?
Will you be able to do a better job?
Average Score: 10
100% knows the answer to this question:
"Who sang the famous song "Peggy Sue" (1962)?
"
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Can you score a 6 or better ?
Do you remember who sang this song?
Average Score: 9
100% knows the answer to this question:
"Who sang the famous song "Thriller" (1983)
"
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Who Sang These Country Songs?
Who is able to recognize all 10 country songs?
Average Score: 9
100% knows the answer to this question:
"Who sang the famous song "I Walk the Line" (1956)?
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Who Sang These Famous Classic Rock Songs?
What's your favorite classic rock hit? Let us know in the comments!
Average Score: 8
100% knows the answer to this question:
"Who sang the famous song "(I Can't Get No) Satisfaction" (1965)?
"
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Food & Beverages Quiz
We challenge you to score higher than a lousy 5
Average Score: 9
100% knows the answer to this question:
"Also called pieplant, what tart pink vegetable is often used as a pie filling?
"
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Food and Beverage Quiz
Who is able to score higher than a lousy 4? Share if you did
Average Score: 9
100% knows the answer to this question:
"Which animal's meat is referred to as mutton, particularly when the animal is an adult?
"
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Food and Beverage Quiz
10 questions but you won't get them all correctly!
Average Score: 9
100% knows the answer to this question:
"What second largest island in the Mediterranean are canned herrings named for?
"
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10 fun questions about food you probably can't answer
Food Quiz
Average Score: 9
100% knows the answer to this question:
"What food group do oatmeal, brown rice and whole wheat belong to?
"
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Challenging Food Quiz
10 HARD questions about food & beverages
Average Score: 6
100% knows the answer to this question:
"if you order Chateaubriand, what type of meat will you be served?
"
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Food and Beverage Quiz
10 questions but you won't get them all correctly!
Average Score: 9
100% knows the answer to this question:
"By what name is Beijing kao ya better known in the West?
"
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Challenging Food & Beverages Quiz
We challenge you to beat his score!
Average Score: 8
100% knows the answer to this question:
"Pop tarts can be heated in which of the following?
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Food & Beverages Quiz
Did you top a 6? Please tell us!
Average Score: 8
100% knows the answer to this question:
"Where would you find mussels?
"
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Unknown Fruit Quiz
No one scores a 6 or more in this unknown fruit quiz!
Average Score: 7
100% knows the answer to this question:
"What is the name of this unknown fruit?
"
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Unbeatable Mixed Questions
Share your score in the comments below
Average Score: 9
100% knows the answer to this question:
"What is the Rose Bowl?
"
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Crazy Trivia Quiz
You must be crazy to play this quiz!
Average Score: 8
96% knows the answer to this question:
"Finish the title of this 1999 movie: The ____ Mile.
"
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Mixed Knowledge Trivia
It's impossible to do better than a 5
Average Score: 8
96% knows the answer to this question:
"A footballer ran 48km in the first half and 32km in the second half of the game. What was the total distance travelled?
"
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General Knowledge Quiz
Can you score a 6 or better?
Average Score: 9
100% knows the answer to this question:
"How many feet are in 144 inches?
"
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Sudden Death Quiz
don't get fooled!
Average Score: 0
94% knows the answer to this question:
"In the German parliamentary election in 2013, who won a third straight election victory?
"
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Thumbs Up!
Let us know your score of this Knowledge Quiz
Average Score: 7
100% knows the answer to this question:
"4374+2920+1466 equals what number?
"
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General Knowledge Sudden End
We hope you can get beyond question 12
Average Score: 0
79% knows the answer to this question:
"Which British TV network launched the world's first teletext service in 1974?
"
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Test The Age Of Your Brain
Mixed Knowledge Quiz
Average Score: 9
100% knows the answer to this question:
"What is an abacus?
"
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You won't answer these 10 questions to perfection
10 general knowledge questions
Average Score: 8
93% knows the answer to this question:
"Daniel Radcliffe plays which character in the Harry Potter films?
"
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Tell us, what do you really know about literature?
We think not enough to get more than 4 answer correctly!
Average Score: 6
100% knows the answer to this question:
"What John Spyri story is about a girl who lives in the Alps?
"
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Literature Quiz
Who is your favorite author?
Average Score: 8
99% knows the answer to this question:
"In "Robinson Crusoe", where is Robinson Crusoe stranded?
"
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Literature Test
What did you score? Share below if you dare!
Average Score: 8
100% knows the answer to this question:
"Who wrote the comedy "Midsummer Night's Dream"?
"
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Literature Quiz
How much knowledge have you stored in you brain about Literature?
Average Score: 7
96% knows the answer to this question:
"What word means to award compensation to?
"
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Literature Quiz
Who of our quizzers can get a perfect 10? Share below!
Average Score: 8
100% knows the answer to this question:
"What classic novel did D. H. Lawrence write in 1928?
"
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Crazy Quiz About Movies!
Nobody will be able to score a 7+
Average Score: 9
100% knows the answer to this question:
"Finish this famous movie title, "All About ___ ".
"
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It's highly doubtful you can complete even half of these movie titles in this quiz.
Movie Quiz
Average Score: 9
100% knows the answer to this question:
"One Flew Over the Cuckoo's "..." (1975)
"
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Movie Quiz
What is the last movie you have seen?
Average Score: 8
97% knows the answer to this question:
"Which of these actresses is regarded as a sex symbol of the 1960s?
"
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Movie Quiz
Can you top a 6 out of 10
Average Score: 8
98% knows the answer to this question:
"Climb Every Mountain is from which film musical?
"
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Movies: 10 Daunting Questions
We hope you have watched enough movies
Average Score: 9
100% knows the answer to this question:
"The film "Jack the Giant Slayer" is a retelling of what tale?
"
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Movie Quiz
What movie has your best memory?
Average Score: 8
100% knows the answer to this question:
"You call that a knife? What movie, starring Paul Hogan, got men bragging about the size of their knives?
"
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10 Hard Movie Questions
What is the last movie you have seen?
Average Score: 7
98% knows the answer to this question:
"Which film star is married to Goldie Hawn?
"
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how often do you go to the movie theater?
Movie Quiz
Average Score: 7
99% knows the answer to this question:
"Marilyn Monroe starred in which of these classic movies?
"
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We bet you can't even finish half of these movie titles in this quiz
Movie Quiz
Average Score: 9
100% knows the answer to this question:
" The Lord of the "...." (2003)
"
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Math Quiz
Are you real mathelete? Let us know below!
Average Score: 8
100% knows the answer to this question:
"Which is the correct spelling?
"
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SUDDEN DEATH QUIZ
Try to stay on your feet!
Average Score: 0
0% knows the answer to this question:
"How fast do you need to travel to go 150 miles in 3 hours?
"
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HARD Math Quiz
Do you know the answer to this riddle?
Average Score: 8
100% knows the answer to this question:
"What is 33 plus half a century?
"
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Math Quiz
Only those who are good with numbers stand a change!
Average Score: 8
94% knows the answer to this question:
"How many feet long is a 100-yard football field?
"
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Mathematics Quiz
Are you a real mastermind in mathematics?
Average Score: 7
100% knows the answer to this question:
"It was 13 degrees this morning and the temperature dropped 12 degrees, what is the temperature now?
"
-
Math Quiz
Only those who are good with numbers stand a change!
Average Score: 19
100% knows the answer to this question:
"What number comes next in the sequence 8, 16, 32, 64?
"
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Unbeatable Math Quiz
You won't score higher than a 6
Average Score: 8
99% knows the answer to this question:
"Doubling is the same as multiplying by which number?
"
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Challenging Math Quiz
You aren't smart enough to score a solid 10!
Average Score: 8
100% knows the answer to this question:
"76 plus 36 gives which result?
"
-
Math Quiz
Only those who are good with numbers stand a change!
Average Score: 8
95% knows the answer to this question:
"How many feet long is a 100-yard football field?
"