Around the World
U.S. History
Science Stuff
Famous Firsts
Inventors & Inventions
100

This city is known as the Big Apple.

New York City

100

This president's face appears on the one-dollar bill.

George Washington

100

Humans need this gas to breathe. 

Oxygen

100

In 1969, this American astronaut famously uttered the words "That's one small step for man" while becoming the first person to walk on the moon.

Neil Armstrong

100

Thomas Edison is widely credited with improving and commercializing this invention.

Light Bulb

200

This island nation off the southeast coast of Africa is the fourth-largest island in the world and famous for its unique wildlife.

Madagascar

200

This structure was built in New York City from 1930 to 1931, briefly holding the title of the world's tallest building.

Empire State Building

200

This is the specific term for an animal that eats only plants, such as a deer, cow, or rabbit.

Herbivore

200

In 2008, this historic election saw this politician voted in as the first African American President of the United States.

Barack Obama

200

Alexander Graham Bell is credited with inventing this communication device. 

Telephone

300

This is the largest country by land area in the world, spanning across both Europe and Asia.

Russia

300

This U.S. President was the youngest person ever elected to the office, serving during the Cuban Missile Crisis before his 1963 assassination.

John F. Kennedy

300

This specific planet in our solar system is famous for its massive, spectacular ring system made of ice and rock.

Saturn

300

This exact mountain peak was successfully summited for the first time in 1953 by Sir Edmund Hillary and Tenzing Norgay.

Mount Everest

300

This fundamental mechanical invention, featuring a circular component rotating on an axle, was created in ancient Mesopotamia around 3500 BCE

Wheel

400

This is the largest island in the world that is not considered its own continent, largely covered by an ice sheet.

Greenland

400

This iconic suspension bridge in California spans a one-mile-wide strait and is painted in a signature "International Orange" color.

Golden Gate Bridge

400

This natural phenomenon is caused by the sudden release of energy in the Earth's crust that creates seismic waves.

Earthquake

400

This fast-food giant opened its very first franchise location in Des Plaines, Illinois, in 1955 under Ray Kroc.

McDonald's

400

This simple, daily tracking asset featuring lines and bars was created in 1974 to automate grocery checkout speeds.

Barcode or UPC

500

This country is the most densely populated island nation in the world, located in South Asia east of India.

Bangladesh

500

This historic, single-lane highway, known as the "Main Street of America," originally ran from Chicago to Santa Monica.

Route 66

500

This specific metal element is the only metal on the periodic table that exists as a liquid at standard room temperature.

Mercury

500

This visionary brothers duo made aviation history in 1903 by executing the world's first successful controlled, powered airplane flight.

The Wright Brothers (Orville and Wilbur)

500

This American tech icon co-founded Microsoft and pioneered the personal computer software revolution with the Windows operating system.

Bill Gates

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