Toughest science and nature quiz in the world.

Question 1 of 10

Transducers change waves: what do transducers in a phones turn sound waves into?

Question 2 of 10

What adopted home of Marie Curie never elected her to its Academy of Sciences, despite the two Nobel prizes she won?

Question 3 of 10

There is a theory that gravity might come from a massless particle that emits gravity the way a photon emits light. What is this particle called?

Question 4 of 10

What star is at the end of the Little Dipper's handle?

Question 5 of 10

Instead of trying to lose calories, Australian dieters watch what other metric unit?

Question 6 of 10

As a boy, Joseph Meister was the first person I saved from rabies. And he in turn became caretaker of the institute named for me. Who am I?

Question 7 of 10

Until the Roman era, rabbits were pretty much only found in Iberia, so Biblical references to rabbits should be to what mammal?

Question 8 of 10

Which of these is not an element?

Question 9 of 10

In 1926, in his Aunt Effie's backyard, what Massachusetts physics prof was inspired by HG Wells' War of the Worlds to launch Nell, the first liquid-fueled rocket, up 41 feet?

Question 10 of 10

If you have all your toes, how many toe bones do you have?

Who Sang Quizzes

Do you know who sang these songs?

Try to score higher than a 6!

Average Score: 8

34% knows the answer to this question: "Who sang "Livin' on a Prayer"? "
Do you know who sang these songs?

Try to score higher than a 6!

Average Score: 8

34% knows the answer to this question: "Who sang "Imagine"? "
Play Quiz

Average Score: 9

32% knows the answer to this question: "Who performed the hit song “Like a Rolling Stone” (1965)? "
Which artists are we looking for?

Do you remember these songs?

Average Score: 7

51% knows the answer to this question: "Who sang “Take on Me” in 1985? "
Who Sang These Songs?

No one knows more than 6 songs

Average Score: 7

95% knows the answer to this question: "Who sang the song, "Shoop"? (1993) "
Only real music fans can name these artists

Can you get past question 7?

Average Score: 8

89% knows the answer to this question: "Which band gave us "Walk Like an Egyptian" (1986)? "

General Knowledge Quizzes

Mixed Trivia Quiz

Let us know your answers below

Average Score: 5

99% knows the answer to this question: " "
Sudden Death Quiz

How many chances did you need?

Average Score: 0

66% knows the answer to this question: " "
10 Impossible Trivia Questions

Let us know below what you did

Average Score: 5

64% knows the answer to this question: " "
Unbeatable Knowledge Quiz

What did you score?

Average Score: 5

26% knows the answer to this question: " "
10 Trivia Questions For You

So... what did you score?

Average Score: 5

42% knows the answer to this question: " "
Challenging Knowledge Quiz

Share if you know the answer

Average Score: 7

75% knows the answer to this question: " "

Math Quizzes

Math Quiz

Only those who are good with numbers stand a change!

Average Score: 9

61% knows the answer to this question: "What is 123 times 4? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

62% knows the answer to this question: "How many feet long is a 100-yard football field? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

57% knows the answer to this question: "What is the total of 25 + 53 + 32? "
Math Quiz

Please let us know your score below

Average Score: 9

74% knows the answer to this question: "What is 18 doubled? "
No one can score a 7 or better

Math Test

Average Score: 9

97% knows the answer to this question: "Which is the largest number? "
Math Quiz

Can You Solve It Without a Calculator?

Average Score: 7

97% knows the answer to this question: "38x39÷38 equals what number? "