Classic Movies
Famous Landmarks
American Inventions
Great American Rivers
The Human Body
100

In this 1942 film, Rick Blaine runs a cafe in wartime Morocco, where an old love arrives with her husband.

What is Casablanca?

100

This New York City landmark was a gift from France commemorating the alliance between the two nations during the American Revolution.

What is the Statue of Liberty?

100

This agricultural machine, patented in 1834 by Cyrus McCormick, helped cut grain more quickly than hand harvesting.

What is the mechanical reaper?

100
This river meets the Allegheny at Pittsburgh to form the Ohio River.

What is the Monongahela River?

100

This blood component helps form clots at the site of a damaged blood vessel.

What are platelets?

200

This 1950 film follows an aging silent-film star whose fortunes change after she meets a young screenwriter.

What is Sunset Boulevard?

200

This Florentine cathedral is crowned by a dome engineering by Filippo Brunelleschi.

What is the Cathedral of Santa Maria del Fiore?

200

This inventor's 1876 patent described a device for transmitting musical tones and speech by telegraph.

Who is Alexander Graham Bell?

200

This river flows through the Grand Canyon and has its headwaters in the Rocky Mountains.

What is the Colorado River?

200

This structure in the inner ear converts sound vibrations into nerve signals.

What is the cochlea?

300

In this 1954 Alfred Hitchcok film, a photographer confined to his apartment become convinced he has witnessed a murder.

What is Rear Window?

300

This ancient Jordanian city is reached through a narrow gorge known as the Siq.

What is Petra?

300

This 1947 invention by Walker Brattain, John Bardeen & William Shockley made it possible to amplify or switch electrical signals with a semiconductor.

What is the transistor?

300

This river, called the "Big Muddy," joins the Mississippi near St. Louis.

What is the Missouri River?

300

This hormone, made by the pancreas, helps lower blood glucose by enabling cells to take up glucose.

What is insulin?

400

This 1948 film follows an ambitious man who become entangled in the world of carnival sideshows.

What is Nightmare Alley?

400

This Istanbul monument was built under Emperor Justinian I and later served as both a mosque and a museum.

What is Hagia Sophia?

400

This inventor received a patent in 1872 for an improved attachment that helped prevent steam boilers from exploding.

Who is Elijah McCoy?

400

This river forms much of the border between Oregon and Washington before reaching the Pacific Ocean.

What is the Columbia River?

400

This kidney structure filters blood and begins the process of forming urine.

What is the nephron?

500

This 1939 film noir centers on a private detective caught in a web of deception involving a priceless bird statuette.

What is The Maltese Falcon?

500

The Khmer temple complex includes a central structure representing Mount Meru, the sacred mountain of Hindu and Buddhist cosmology.

What is Angkor Wat?

500

This 1830s calculating machine, designed by Charles Bobbage, inspired a published account by Ada Lovelace that included an algorithm for its proposed operation.

What is the Analytical Engine?

500

This river, known by the Indigenous name, loops through Montana before crossing into Idaho.

What is the Kootenai River?

500

This region of the brain regulates functions such as body temperature, hunger & hormone signaling through its connection to the pituitary gland.

What is the hypothalamus?

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