This "Great" structure off the coast of Australia is the world's largest coral reef system.
What is the Great Barrier Reef?
This is the most abundant gas in the Earth's atmosphere, making up about 78% of it.
What is Nitrogen?
This 1939 film features a girl from Kansas who tells her dog, "Toto, I've a feeling we're not in Kansas anymore."
What is The Wizard of Oz?
This French heroine led the French army to victory at Orléans at age 18 before being burned at the stake.
Who was Joan of Arc?
This is the only fruit that has its seeds on the outside.
What is a Strawberry?
While it's not the tallest, this South American river carries more water than any other in the world.
What is the Amazon River?
In computer science, this 4-letter term refers to a bug or a flaw in a system.
What is a Glitch?
He is the "King of Pop" known for hits like "Thriller" and "Billie Jean."
Who is Michael Jackson?
This ancient civilization built the Pyramids of Giza.
Who were the Egyptians?
This Japanese word for "empty orchestra" refers to singing along to recorded music.
What is Karaoke?
This is the only continent on Earth that does not have any active volcanoes.
What is Australia?
This fundamental force keeps us on the ground; its constant on Earth is approximately $9.8m/s squared.
What is Gravity?
In the Marvel Cinematic Universe, this is the fictional African nation ruled by the Black Panther.
What is Wakanda?
The "Magna Carta" was signed in 1215 by this English King at Runnymede.
Who was King John?
A "lepidopterist" is someone who studies these winged insects.
What are Butterflies and Moths?
Known as the "Lungs of the Planet," this vast tropical rainforest produces roughly 20% of the Earth's oxygen.
What is the Amazon Rainforest?
This Polish-born scientist was the first person to win two Nobel Prizes in two different scientific fields (Physics and Chemistry).
Who is Marie Curie?
This 15th-century Leonardo da Vinci mural, located in Milan, depicts Jesus’ final meal with his apostles.
What is The Last Supper?
This wall, which divided a major German city for 28 years, finally fell in 1989.
What was The Berlin Wall?
This is the smallest country in the world, both by population and total land area.
What is Vatican City?
This phenomenon, also called the "Northern Lights," is caused by solar wind disturbing the Earth's magnetosphere.
What is the Aurora Borealis?
This is the only metal that is liquid at standard room temperature and pressure.
What is Mercury?
This author created the character Sherlock Holmes in the 1887 novel A Study in Scarlet.
Who is Sir Arthur Conan Doyle?
The Code of Hammurabi, one of the earliest sets of laws, originated in this ancient Mesopotamian city-state.
What is Babylon?
This is the only mammal capable of true powered flight, using wings that are structurally similar to a human hand.
What is a Bat?