Math & Science IQ Quiz: Can You Score 20/20?

Test your STEM smarts with 20 challenging questions across math, physics, biology, astronomy, and Earth science

Math & Science IQ Quiz: Can You Score 20/20?

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Ready for a challenge that will test your mastery of both the mathematical and scientific worlds? This quiz was built for the truly curious minds who never stopped asking questions. We’ve blended questions from geometry, astronomy, physics, biology, and chemistry to see just how much you really remember from school—or self-learning!

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Can you recall how many elements are on the periodic table or which bone is the longest in the body? Do you know what speed Earth spins at or what causes objects to float more easily in water? If you’re a trivia lover who enjoys mixing fun with facts, this one’s for you.

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With 20 diverse questions, you’ll explore everything from prime numbers to rainbows, trapezoids to thermometers. You don’t need a lab coat or calculator—just a sharp memory, logical reasoning, and a dash of confidence. Score high enough and earn your digital badge of brilliance!

What are the prime factors of 24?
Two and threeTwo and sevenThree and fourThree and five
How many sides does a trapezoid have?
ThreeFourSixFive
What produces most breathable air on Earth?
MountainsPlantsForestsThe oceans
What mineral helps objects float in water?
CalciumSaltMagnesiumChlorine
Which travels faster: Sound or Light?
LightSoundElectricityRadio Waves
How many degrees are in a circle?
36018040090
How many elements are on the periodic table?
118120112116
Which theorem uses A² + B² = C²?
Pascal's RuleEuler's TheoremFermat's TheoremPythagorean Theorem
How fast does Earth spin (mph)?
500 mph800 mph2000 mph1000 mph
What is x in the expression x+5 = 16?
3118021
What does the Greek prefix "kilo" mean?
One-thousandthOne millionOne thousandOne hundred
What highly infectious and deadly disease was eradicated in 1980?
PolioPlagueEbolaSmallpox
Who was the first American woman in space?
Valentina TereshkovaSally RideMae JemisonKatherine Johnson
How many colors are in a rainbow?
NineSevenEightSix
Which astronomer is named in Bohemian Rhapsody?
NewtonKeplerCopernicusGalileo
How many planets are in the solar system?
EightTenNineSeven
How many pounds are in a ton?
2,5001,0002,0001,500
What is the largest bone in the body?
SkullPelvisFemurSpine
How many centimeters are in a meter?
100010010500
What is the fear of flowers called?
BotanophobiaAnthophobiaFloraphobiaPetalphobia

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