Easy
Medium
Hard
Extreme
Impossible
100

What color is the sky on a clear day?

Blue

100

Which planet is the largest in our solar system?

Jupiter

100

What is the second law of thermodynamics?

The total entropy of an isolated system can never decrease over time

100

What is the name of the highest mountain NOT located in Asia?

Aconcagua (in Argentina)

100

What is the name of the physicist who first proposed the concept of the “black hole”?

John Michell

200

How many legs does a spider have?

Eight

200

Who was the first human to travel into space?

Yuri Gagarin

200

What element does “Pb” represent on the periodic table?

Lead

200

Which scientist developed the theory of general relativity?

Albert Einstein

200

In quantum mechanics, what principle asserts that certain pairs of properties, like position and momentum, cannot both be known to arbitrary precision?

Heisenberg's Uncertainty Principle

300

Who painted the Mona Lisa?

Leonardo da Vinci

300

What is the hardest natural substance on Earth?

Diamond

300

How many moons does Saturn have?

145 confirmed (as of 2023)

300

What number comes after a billion in the American numbering system?

A trillion

300

What is the chemical formula for glucose?

C₆H₁₂O₆

400

What is the smallest prime number?

Two
400

What is the sum of the angles in a triangle?

180 degrees

400

In music, what does “fortissimo” mean?

To play very loudly

400

In Norse mythology, what is the name of the world tree?

Yggdrasil

400

Who won the Nobel Prize in Physics in 2023?

Pierre Agostini, Ferenc Krausz, and Anne L’Huillier (for attosecond physics)

500

In which month is Halloween celebrated?

October

500

In which year did World War II end?

1945

500

What is the name of the longest bone in the human body?

The femur

500

What is the mathematical constant e approximately equal to?

2.718

500

What is the Gödel incompleteness theorem?

It states that in any consistent formal system that is capable of expressing elementary arithmetic, there are true statements that cannot be proven within the system

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