HOW STUFF WORKS
QUIZZES

FOLLOW US
Only Someone With an IQ of 130+ Can Ace This Knowledge Test! Can You?
by Annette
This is serious. If you pass this quiz, you're an incredibly smart person. If you fail... well, we promise that we'll still like you. Proceed, brainiac!

What does an endocrinologist​ specialize in?

  • Brain
  • Heart
  • Hormones

Which famous children's book was illustrated by its author?

  • Peter Pan
  • Alice in Wonderland
  • The Hobbit

What is a bathyscaphe?

  • A reptile
  • A type of bird
  • A submersible vessel

What is the southernmost state in the continental U.S.?

  • Texas
  • Florida
  • Hawaii

How much of the moon's surface can we see from Earth?

  • 30%
  • 49%
  • 59%

What is the pilomotor reflex?

  • Hiccuping
  • Goosebumps
  • Heart palpitations

Where is the Eustachian tube?

  • Nose
  • Tongue
  • Ear

What is one sport where neither the spectators nor the players know the score?

  • Golf
  • Cycling
  • Boxing

How many punctuation marks are in English grammar?

  • 10
  • 14
  • 25

Which is the loudest animal on Earth, to the human ear?

  • Blue whale
  • Lion
  • Elephant

Which of these is north of Maine?

  • Paris
  • Madrid
  • Angola

Which is farther west, Portland, OR, or Los Angeles, CA?

  • Portland
  • Los Angeles

How is the Milky Way Galaxy shaped?

  • Ball
  • Donut
  • Disk

What does acclimatized mean?

  • Clamoring
  • Claimed value
  • Accustomed to the conditions

Where is the hyoid?

  • In the solar system
  • In the neck
  • In the periodic table

Who was the 23rd president of the U.S.?

  • Harding
  • Roosevelt
  • Harrison

What famous landmark is moving backward?

  • Eiffel tower
  • Niagara Falls
  • Grand Canyon

Which vegetable is perennial​?

  • Asparagus
  • Rhubarb
  • Both

What fruit has seeds on the outside?

  • Strawberry
  • Raspberry
  • Blackberry

What is the only fruit or veg never frozen or preserved?

  • Hearts of palm
  • Plantain
  • Lettuce

Dr. Yoshiro Nakamatsu is a famous inventor who _____ to stimulate his brain.

  • Cuts
  • Sings
  • Shakes

Which burns more calories?

  • Watching TV
  • Sleeping

When does honey spoil?

  • 10 years
  • 30 years
  • Never

Alexander Graham Bell invented the telephone and which of these?

  • Spark plug
  • Metal detector
  • Printer

How many stars are in the Milky Way?

  • 100 to 400 billion
  • 14 billion
  • 600 to 900 trillion

How many cells are in the human body?

  • 100 billion
  • 1 trillion
  • 37 trillion

What is the smallest country in the world?

  • Vatican City
  • Monaco
  • Geordania

What percentage of people are left-handed?

  • 10%
  • 20%
  • 32%

How many letters are in the Hawaiian alphabet?

  • 23
  • 20
  • 13

Insects have how many legs?

  • 4
  • 6
  • 8

How many plays did Shakespeare write?

  • 28
  • 31
  • 37

What do you get when you add up all the numbers from 1 to 100 consecutively?

  • 335
  • 2020
  • 5,050

Where are one-quarter of your bones?

  • Skull
  • Arms
  • Feet

How many seconds are in a year?

  • 1,768,398
  • 31,536,000
  • 100,987,937

What is 20°C translated into Fahrenheit?

  • 45°
  • 68°
  • 75°