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100

This 1868 amendment to the U.S. Constitution guaranteed birthright citizenship and equal protection under the law.

14th Amendment

100

This 1999 sci-fi film introduced the concept of humans living unknowingly in a simulated reality controlled by machines.  

The Matrix

100

In chemistry, this type of bond involves the sharing of electron pairs between atoms.

Covalent

100

This British singer-songwriter rose to fame with the 2011 hit album 21, which includes the songs “Rolling in the Deep” and “Someone Like You.”

Adele

100

The Great Barrier Reef, the world’s largest coral reef system, is located off the coast of this country.

Australia

200

This 1979 event in Iran replaced a pro-Western monarchy with a theocratic Islamic Republic led by Ayatollah Khomeini.

Iranian Revolution

200

In The Mandalorian, the Mandalorian frequently carries and protects this mysterious child, whose real name is revealed as Grogu.

“The Child” or Baby Yoda

200

This chemical reaction type involves the breaking down of a compound into two or more simpler substances, often using heat, light, or electricity.

Decomposition

200

In Queen’s Bohemian Rhapsody, the song shifts through multiple musical styles; the section after the ballad but before the rock segment is known for this theatrical genre.

Opera/Operatic

200

Mount Kilimanjaro, Africa’s tallest peak, is located in this country.

Tanzania

300

The 1884–85 Berlin Conference formalized European territorial claims in this continent without the involvement of its Indigenous populations.

Africa

300

This 1968 Stanley Kubrick film was revolutionary for its visual effects and abstract storytelling, especially in its “Stargate” sequence.

2001: A Space Odyssey

300

In molecular biology, this enzyme synthesizes RNA from a DNA template during transcription.

RNA polymerase

300

In Olivia Rodrigo’s SOUR, this track’s title references a high school cliquish term, and its lyrics describe revenge fantasies against a romantic rival.

"good 4 u"

300

This Central Asian country, the world’s largest landlocked country, is crossed by the Silk Road and has Almaty as its largest city.

Kazakhstan

400

Formed in 1960 by Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela, this organization gained major global influence during the 1973 oil crisis.

OPEC (the Organization of the Petroleum Exporting Countries)

400

In The Handmaid’s Tale, June (Offred) manages to secretly communicate with this character, a fellow handmaid, using hidden messages in a system of coded embroidery.

Ofglen

400

According to molecular orbital theory, this type of molecular orbital forms when two atomic orbitals combine in-phase along the internuclear axis, resulting in electron density concentrated between the nuclei.

Bonding sigma (σ) molecular orbital

400

In Beyoncé’s Formation, she references this city, her hometown, with the lyric “I like my baby hair, with baby hair and afros.”

New Orleans

400

In 1959, this remote Antarctic plateau experienced the lowest natural temperature ever recorded on Earth, at −89.2 °C (−128.6 °F).

East Antarctic Plateau (at Vostok Station)

500

Coined by political scientist Samuel Huntington in the 1990s, this phrase describes the rapid spread of democracy following the Cold War’s end.

Third Wave of Democratization

500

In Breaking Bad, Walter White uses this chemical compound to poison Brock, a plot point that manipulates Jesse Pinkman’s loyalties.

Ricin.

500

In quantum mechanics, this fundamental particle property can take on values of “up” or “down” in a given direction.

Spin

500

This 1971 album by Marvin Gaye addresses social issues such as poverty and war and is widely considered one of the greatest concept albums of all time.

"What’s Going On"

500

This river, the longest in Asia, flows over 6,300 kilometers and empties into the East China Sea.

Yangtze River