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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10 Questions About History
We bet you'll never ever score a solid 10
Average Score: 8
100% knows the answer to this question:
"In what year was Maggie Thatcher first elected UK Prime Minister?
"
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History Trivia Quiz
Scoring higher than a 6 is impossible!
Average Score: 9
98% knows the answer to this question:
"Prince Rainier III of Monaco married which Hollywood actress?
"
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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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Very Hard History Quiz
Only people with an IQ of 140+ will score a 10
Average Score: 6
92% knows the answer to this question:
"Advertising of which product was banned from UK television in 1965?
"
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History Quiz That Pushes Your Limits
Can you beat a rocking 7?
Average Score: 8
100% knows the answer to this question:
"The July Revolution of 1830 toppled Charles X in favor of Louis-Philippe. Where?
"
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Easy History Quiz
Did you score a perfect 10 on this one?
Average Score: 10
100% knows the answer to this question:
"Which historical figure was the founder of modern nursing?
"
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History Quiz
Test if you got a Trivia IQ of 135+
Average Score: 6
88% knows the answer to this question:
"During which civil war did the 'Battle of Aquia Creek' take place?
"
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Quiz on History.
We think you can do way better than a lousy 6
Average Score: 9
100% knows the answer to this question:
"In 1982, 4 streets in which UK city were renamed after the members of the Beatles?
"
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Elementary School History Quiz
We wish you good luck with this quiz!
Average Score: 8
100% knows the answer to this question:
"Who killed Abraham Lincoln in 1865?
"
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Hard Geography Quiz
You won't score a 5 or higher!
Average Score: 6
94% knows the answer to this question:
"Which city in Lombardy is the second largest city in Italy?
"
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10 Geography Questions
How many did you answer correctly?
Average Score: 9
100% knows the answer to this question:
"The description "birthplace of American freedom" best relates to which landmark?
"
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Geology Quiz - How Much Do You Know?
Test Your Knowledge and See if You're Up to the Challenge
Average Score: 9
98% knows the answer to this question:
"On which body of water will surfers at Newquay catch the wave?
"
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Geography Quiz
What would be your dream travel destination?
Average Score: 7
98% knows the answer to this question:
"Which is the southern-most country in Africa?
"
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10 Geography Questions
Where did you go?
Average Score: 9
100% knows the answer to this question:
"In which country would tourists visit Ayers Rock?
"
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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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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
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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Geography quiz. Level Impossible.
Dare to share?
Average Score: 8
100% knows the answer to this question:
"The Harrods department store is in the Knightbridge neighborhood of which city?
"
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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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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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How often do you listen to music?
HARD Music Quiz
Average Score: 6
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 think scoring a 5+ is impossible
Average Score: 10
100% knows the answer to this question:
"Finish this line of lyrics: 'I've travelled each and every highway - And more, much more than this - I did it ___________'.
"
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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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Do you know the answer to this musical riddle?
Music Quiz
Average Score: 6
81% knows the answer to this question:
"Shakira releases most of her top singles in English and which other language?
"
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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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Music Quiz
Hats off if you're able to score a perfect 10
Average Score: 7
98% knows the answer to this question:
"The song from which film won the 1997 Oscar for Best Song?
"
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10 famous songs, 10 unfinished titles
Take Quiz
Average Score: 8
100% knows the answer to this question:
"'Viva ____'
"
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Can you score a perfect 10 in this Science quiz?
10 questions
Average Score: 9
100% knows the answer to this question:
"What is removed during an appendectomy?
"
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HARD Science Quiz
Who can beat the average score?
Average Score: 8
100% knows the answer to this question:
"What is a change in the form of a species over time called?
"
-
Are you a Science Expert?
Prove it in the comments below
Average Score: 9
99% knows the answer to this question:
"What property is a measurement of how hot or cold something is?
"
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Science Quiz
Nobody can score a perfect 10
Average Score: 10
100% knows the answer to this question:
"In weather terms, what is the opposite of heat?
"
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Nobody can score a perfect 10
Quiz for Scientists
Average Score: 10
100% knows the answer to this question:
"Just below the epiglottis are two plates called the thyroid cartilage, which in turn meet to produce what body part with a fruity name?
"
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Hard Science Quiz
Tell us if you scored an impossible 10
Average Score: 8
100% knows the answer to this question:
"The word "lunar" means something related to what?
"
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Challenging Science Quiz
We hope you're smart enough for this quiz!
Average Score: 8
100% knows the answer to this question:
"Which of the following is a signal that you are hungry?
"
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Hard Science Quiz
We think this quiz is way too hard for you!
Average Score: 8
100% knows the answer to this question:
"Earthquakes sometimes cause "tidal" what?
"
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Mad Science Quiz
Can you do better than a 7?
Average Score: 8
100% knows the answer to this question:
"When you shuffle along carpets on dry days, the friction builds up your negative charge, which is attracted to the positive charge on a doorknob. What does that produce?
"
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Who Sang These Songs From The 70s?
10 hard questions
Average Score: 8
98% knows the answer to this question:
"Who sang the famous song "Fernando" (1975) ?
"
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Who Sang These Songs
Did you know more than 5 songs?
Average Score: 9
100% knows the answer to this question:
"Who sang the famous song "You Make Me Feel Like A Natural Woman" (1967) ?
"
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Who sang the famous song "Hey Jude" (1968) ?
If you know the answer, make sure you check out this quiz, you might score a perfect 10
Average Score: 9
100% knows the answer to this question:
"Who sang the famous song "Hey Jude" (1968) ?
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Who Sang These Songs?
Good luck playing!
Average Score: 9
97% knows the answer to this question:
"Who sang the famous song "Green Green Grass Of Home" (1966) ?
"
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60's music quiz
You won't score a perfect 10
Average Score: 8
97% knows the answer to this question:
"Who sang the famous song "Sunny Afternoon" (1966) ?
"
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Who Sang These Psychedelic Rock Songs?
How many rock songs did you know?
Average Score: 8
99% knows the answer to this question:
"Who sang the famous song "Good Vibrations" (1966)?
"
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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: 14
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 one knows more than 5 songs in this quiz!
Average Score: 8
93% knows the answer to this question:
"Who sang the famous song "Graceland" (1986)?
"
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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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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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Test Your Culinary Knowledge with this Delicious Quiz
Show Off your result in the comments
Average Score: 10
100% knows the answer to this question:
"A cucumber preserved in vinegar or salt is called what?
"
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Food Quiz
What's on your favorite sandwich?
Average Score: 10
99% knows the answer to this question:
"What dish did Lemuel Benedict invent in 1894, as a hangover cure?
"
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Food Quiz
10 questions but you won't get them all correctly!
Average Score: 10
100% knows the answer to this question:
"Grapes come in what?
"
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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?
"
-
Can you solve this Food Riddle?
Food Quiz
Average Score: 6
100% knows the answer to this question:
"Which type of beverage typically contains fruit?
"
-
Challenging Food & Beverages Quiz
We challenge you to beat her score!
Average Score: 7
99% knows the answer to this question:
"Placing a green tomato into a paper bag helps it to do what?
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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?
"
-
Food and Beverage Sudden End Quiz
15 questions!
Average Score: 0
99% knows the answer to this question:
"What is the popular combination of drinks?
"
-
Fun Trivia Quiz
But you won't even get 5 right!
Average Score: 8
100% knows the answer to this question:
"In what U.S. state can you watch a show on Broadway?
"
-
Play if you dare!
General Knowledge Quiz
Average Score: 6
100% knows the answer to this question:
"The Jets take on which fishy gang in "West Side Story"?
"
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Challenging Knowledge Quiz
Can you beat her 6?
Average Score: 8
98% knows the answer to this question:
"Johannesburg is what country's largest city?
"
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Mixed Knowledge Quiz
Will you be able to score a high 9?
Average Score: 6
100% knows the answer to this question:
"What is Kiefer Sutherlands Character called in "24"?
"
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Are you one of the 10% that does not need a second attempt?
Hard Sudden End Quiz
Average Score: 0
99% knows the answer to this question:
"What is the largest bird that cannot fly, but runs very quickly?
"
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You probably don't want to play this quiz
Hard General Knowledge Quiz
Average Score: 8
99% knows the answer to this question:
"What is a man-made lake that stores water for future use known as?
"
-
Can you score an 8 in this quiz?
please tell us below
Average Score: 9
100% knows the answer to this question:
"What is global warming?
"
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No one can beat my score!
Impossible Knowledge Quiz
Average Score: 7
95% knows the answer to this question:
"1950s oceanographer Jacques Cousteau was from which country?
"
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There is no doubt that you will fail this one.
General Knowledge Quiz
Average Score: 8
100% knows the answer to this question:
"In what industry did John Davidson Rockefeller get rich?
"
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Literature Quiz
We challenge you to score an 8+
Average Score: 7
99% knows the answer to this question:
"Which one of these means an animal's poisonous fluids?
"
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Literature Quiz
How much knowledge have you stored in your brain about Literature?
Average Score: 6
84% knows the answer to this question:
"Which king said "A horse, a horse! my kingdom for a horse!"?
"
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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 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?
"
-
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 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
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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Only 10% can complete all 10 of these movie titles
Movie Title Quiz
Average Score: 10
100% knows the answer to this question:
"Planet of the …..
"
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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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Quiz about Movies
What is the last movie you saw?
Average Score: 8
99% knows the answer to this question:
"What animated movie is based on "The Snow Queen" by Hans Christian Andersen?
"
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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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Movie Quiz Challenge
Think you have what it takes to do better than me?
Average Score: 8
99% knows the answer to this question:
"What type of film is "Kung Fu Panda 2"?
"
-
how often do you go to the movie theater?
Movie Quiz
Average Score: 7
98% knows the answer to this question:
"Marilyn Monroe starred in which of these classic movies?
"
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Movie Quiz
Click to start this quiz
Average Score: 7
99% knows the answer to this question:
"How would you categorise the film The Texas Chainsaw Massacre?
"
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Crazy Quiz About Movies!
Nobody will be able to score a perfect 10
Average Score: 5
84% knows the answer to this question:
"In which movie did Brad Pitt play the role of Tyler Durden?
"
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Quiz About Movies
What did you score?
Average Score: 8
100% knows the answer to this question:
"What movie sequel promoted itself with the tagline, "Just when you thought it was safe to go back in the water"?
"
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Math Quiz
Only those who are good with numbers stand a change!
Average Score: 8
99% knows the answer to this question:
"What is the total of 25 + 53 + 32?
"
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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?
"
-
Mathematics Quiz
Nobody is able to score a perfect 10
Average Score: 8
99% knows the answer to this question:
"What is double 26?
"
-
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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Test Your Math Knowledge
Absolutely nobody scores a solid 10
Average Score: 9
98% knows the answer to this question:
"What number when added to 1661, gives 2723?
"
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Mathematics Quiz
Nobody is able to score a perfect 10
Average Score: 9
99% knows the answer to this question:
"How many in a pair?
"
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Can you solve this?
go to Math Quiz
Average Score: 9
100% knows the answer to this question:
"If a five day vacations costs 2500 dollars, how much does each day cost?
"
-
Math Quiz Time!
Think you have what it takes to ace it?
Average Score: 9
100% knows the answer to this question:
"If you are 29 years old. How old will you be in 21 years time?
"
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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?
"