Science Quiz : Very Hard

Question 1 of 10

It's thought that the Pacific tree frog is the only species of frog to make this noise, but because it lives in Hollywood, the sound became established through the movies. What sound is this?

Question 2 of 10

Which paired organ in your body is two different sizes, because it makes room for your heart?

Question 3 of 10

What is unusual about the eyes of both the seahorse and the lizard?

Question 4 of 10

Roughly how big is each of your kidneys?

Question 5 of 10

Where would you find the only joint in the human body that can rotate 360??

Question 6 of 10

What infection, first observed by Utrecht phytopathologist Bea Schwarz in 1921, is caused by a fungus called Ophiostoma ulmi?

Question 7 of 10

Butterflies and honeybees can see what kind of light, which reflects off some flower petals to direct these insects to the nectar-filled center?

Question 8 of 10

Your cecum, colon and rectum make up what part of your body?

Question 9 of 10

Aside from the Moon, what is typically the brightest object in the night sky?

Question 10 of 10

The four innermost Jovian moons are named for the biggest one, which in turn was named for what nymph, who nursed the baby Zeus?

Who Sang Quizzes

Who is the singer of these songs?

Please tell us if you know more than 6 songs

Average Score: 9

46% knows the answer to this question: "Who sang the famous song "Imagine" (1971) ? "
Who Sang These Songs?

Who is able to score higher than a 6?

Average Score: 7

70% knows the answer to this question: "Which trumpet-voiced legend warmed hearts with “What a Wonderful World” (1967)? "
Do you know the answers?

Find out by playing this quiz!

Average Score: 7

82% knows the answer to this question: "Who sang the famous song "Living Doll" (1986) "
Are you a music expert?

Who Sang These Songs?

Average Score: 7

32% knows the answer to this question: "Which legendary crooner made "Fly Me to the Moon" (1964) unforgettable? "
Who sang these songs from the 50s, 60s & 70s

Which decade do you love musically?

Average Score: 9

30% knows the answer to this question: "Who sang the song, "Jailhouse Rock" (1957)? "
Who sang these songs?

Question 5 is impossible

Average Score: 8

86% knows the answer to this question: "Who sang the famous song Yesterday (1965)? "

General Knowledge Quizzes

Brain-Teasing Trivia Questions

We wonder what you will score

Average Score: 5

32% knows the answer to this question: " "
General Knowledge Quiz

And..? Did you know it all?

Average Score: 5

49% knows the answer to this question: " "
Trivia Quiz with a Mix of Questions

No one is able to score higher than a 6

Average Score: 8

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

We hope this one isn't a struggle for you

Average Score: 5

90% knows the answer to this question: " "
His score is unbeatable by anyone!

Impossible Knowledge Quiz

Average Score: 8

41% knows the answer to this question: " "
Sudden Death

Only a genius will make it all the way to question 10

Average Score: 7

77% knows the answer to this question: " "

Math Quizzes

Math Quiz

We hope you're smart enough for these questions

Average Score: 8

48% knows the answer to this question: "If you eat 23 sweets from a tub that contains 687 how many sweets do you have left? "
Math Quiz

Can You Solve It Without a Calculator?

Average Score: 7

76% knows the answer to this question: "38x39÷38 equals what number? "
Math Quiz

Only those who are good with numbers stand a chance!

Average Score: 10

77% knows the answer to this question: "Which number is most commonly considered unlucky? "
Mathematics Quiz

Nobody is able to score a perfect 10

Average Score: 8

81% knows the answer to this question: "What is double 26? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

79% knows the answer to this question: "What is the total of 25 + 53 + 32? "
Math Quiz

Only those who are good with numbers stand a change!

Average Score: 8

44% knows the answer to this question: "How many feet long is a 100-yard football field? "