Geography
Science
World History
Computer Science
Potpourri
10

The capital of Slovakia.

What is Bratislava?

10

The fifth planet from the Sun and the largest in the Solar System.

What is Jupiter?

10

He painted the ceiling of the Sistine Chapel.

Who is Michelangelo?

10

Often the first program written by people learning to code.

What is a "Hello, World!" program?

10

Alfa, Romeo, Charlie, Hotel, Echo, Romeo.

What is ARCHER in the NATO phonetic alphabet?

20

The largest and deepest of Earth's oceanic divisions.

What is the Pacific Ocean?

20

On the periodic table its symbol is Ag.

What is silver?

20

A Carthaginian general widely considered one of the greatest military commanders in world history, sometimes used elephants in battle. 

Who is Hannibal?

20

It is 11000.

What is 24 in binary?

20

A fictional Belgian detective created by Agatha Christie.

Who is Hercule Poirot?

30

The smallest country in the world.

What is Vatican City?

30

In Einstein's famous equation: E=mcit's c.

What is the speed of light?

30

Papermaking, gunpowder, printing and the compass.

What are the Four Great Inventions of Ancient China?

30

Considered by many to be the father of modern computer science as the world knows it.

Who is Alan Turing?

30

English lead singer and one of the founder members of the Rolling Stones.

Who is Mick Jagger?

40

An iconic American landmark in South Dakota.

What is Mount Rushmore (National Memorial)?

40

Alexander Fleming, a Scottish biologist, physician, microbiologist, and pharmacologist.

Who discovered penicillin? 

40

The queen of the underworld and wife of Hades.

Who is Persephone?

40

First high level programming language.

What is FORTRAN?

40

Consumer electronics and video game company was founded in 1889 and originally produced playing cards.

What is Nintendo?

50

The highest active volcano in Europe.

Mount Etna.

50

It is taken as −273.15° on the Celsius scale.

What is absolute zero? 

or 

What is zero kelvin?

50

Calculated the circumference of the earth.

Who is Eratosthenes?

50

The first computer virus.

What is Creeper virus/system?

50

Dendrophobia.

What is the fear of trees?