world history
science
math
physics
the Arctic Ocean
100

During World War II, a Polish army unit officially enlisted Wojtek the brown bear, as a private who helped carry heavy artillery shells and ammunition crates during the grueling Battle of Monte Cassino.

When was a bear at war

100

With a temperature reaching roughly 50,000 degrees Fahrenheit, this natural phenomenon is actually five times hotter than the surface of the Sun.

what is lighting

100

This is the only integer that is neither prime nor composite.

 What is 1?

100

It takes about 8 minutes and 20 seconds for light from this celestial body to reach Earth.

What is the Sun?

100

Covering roughly 5.4 million square miles, this body of water is Earth's smallest and shallowest world ocean

What is the Arctic Ocean

200

In July 1518, a bizarre dancing mania broke out in Strasbourg (modern-day France) where hundreds of people danced compulsively for days without rest, with many eventually dying from heart attacks, strokes, or sheer exhaustion.

What was the Dancing Plague of 1518?

200

A single rotation on its axis takes about 243 Earth days for this planet, which is actually longer than the 225 Earth days it takes to complete one revolution around the Sun.

What is Venus?

200

This is the total number of degrees found inside any standard triangle.

What is 180 degrees

200

Of the four fundamental forces in nature (electromagnetism, strong nuclear, weak nuclear, and gravity), this one is by far the weakest.

What is gravity?

200

This ocean gets its name from the Greek word arktikos, which translates to this large land animal.

What is a bear?

300

The Anglo-Zanzibar War on August 27, 1896, lasted between 38 and 45 minutes.

The shortest war in history

300

Weighing about three pounds in an average adult, this reddish-brown internal organ is the heaviest in the human body.

What is the liver?

300

This is the first number in the English counting system that contains the letter "A" in its spelled-out name.

What is one thousand (1,000)

300

This type of optical lens is thicker at the edges than at the middle, causing parallel light rays to diverge.

What is a concave lens?

300

Dividing the Arctic Ocean floor into the Eurasian and Amerasian basins is this major underwater mountain range named for an 18th-century Russian scientist.

 What is the Lomonosov Ridge?

400

In 1913, Adolf Hitler, Joseph Stalin, Leon Trotsky, and Josip Broz Tito all lived in what city?

Vienna, Austria

400

These cephalopods operate with a central systemic heart and two additional branchial hearts, all pumping a copper-based blood that appears blue.

What is an octopus

400

Named after an Italian mathematician from Pisa, this famous sequence starts with 0 and 1, where each new number is found by adding the two previous numbers together.

What is the Fibonacci sequence?

400

A sugar-cube-sized piece of this incredibly dense stellar remnant weighs about one billion tons on Earth.

What is a neutron star?  

400

Two of the marginal seas that make up parts of this remote northern ocean include the Laptev Sea and this sea named after a Dutch explorer.

What is the Barents Sea?

500

Tsutomu Yamaguchi was in Hiroshima on a business trip when the first atomic bomb was dropped in August 1945, survived the blast, returned home to Nagasaki just in time, and survived the second atomic bomb drop three days later,

Which man was credited with surviving two atomic bombs?

500

Coined by Friedrich Mohs in 1812, this numerical scale runs from 1 for talc up to 10 for diamond to measure mineral scratch resistance.

What is the Mohs scale

500

Known as the "Father of Geometry," this ancient Greek mathematician wrote a 13-book treatise called The Elements.

Who is Euclid?

500

Formulated by a German physicist, this principle states that you cannot simultaneously know both the exact position and momentum of a particle.

What is the Heisenberg uncertainty principle?

500

In 1896, this famous Norwegian explorer and humanitarian undertook the first successful nautical crossing of the Arctic Ocean aboard the ship Fram.

Who is Fridtjof Nansen?

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