GeoBuff Daily Geography Trivia — Friday, May 8, 2026

GeoBuff Daily Geography Trivia, the Friday, May 8 edition — 10 geography questions with answers and explanations.

Each set is AI-assisted and reviewed by GeoBuff before it is published, and a new set is released every day.

These iconic red sandstone formations, known as 'The Mittens,' are located in which U.S. state? The answer is Utah. The Mittens are the signature buttes of Monument Valley, which straddles the border of Utah and Arizona but is most associated with Utah's canyon country landscape.

Which Middle Eastern capital city is built across a series of hills historically known as 'jabals,' and is home to the ancient Roman Theatre dating back to the 2nd century AD? The answer is Amman. Amman, the capital of Jordan, is famously built on seven hills (jabals). Its well-preserved Roman Theatre, constructed during the reign of Emperor Antoninus Pius, seats approximately 6,000 people and remains a prominent landmark.

California is the leading U.S. producer of which agricultural commodity, supplying roughly 80% of the world's supply? The answer is Almonds. California's Central Valley produces around 80% of the world's almonds. The state's Mediterranean climate is ideal for almond cultivation, making it one of California's most valuable agricultural exports.

This massive concrete arch-gravity dam, straddling the border of two states on the Colorado River, is primarily associated with which U.S. state? The answer is Nevada. Hoover Dam sits on the border of Nevada and Arizona but is most commonly associated with Nevada, located about 30 miles southeast of Las Vegas. It was completed in 1935.

Which country has changed its national flag more times than almost any other nation in the 20th and 21st centuries, reflecting its turbulent political history? The answer is Afghanistan. Afghanistan has had more than a dozen different national flags since the early 20th century, reflecting its many changes in government — from monarchy to republic, Soviet-backed state, mujahideen rule, Taliban, and beyond.

Which European capital city is home to Trinity College, which houses the famous illuminated manuscript known as the Book of Kells? The answer is Dublin. The Book of Kells is a medieval illuminated manuscript of the four Gospels, created around 800 AD. It has been on permanent display at Trinity College Library in Dublin, Ireland, since the 1950s.

Which river forms the majority of the border between Texas and Mexico? The answer is Rio Grande. The Rio Grande (known as Río Bravo del Norte in Mexico) runs approximately 3,051 km and forms the entire southern border of Texas with Mexico.

This ancient ceremonial complex, built by Darius the Great around 515 BC, is located in which country? The answer is Iran. Persepolis was the ceremonial capital of the Achaemenid Empire and is located near Shiraz in modern-day Iran. It is a UNESCO World Heritage Site.

The flag of which cricket-loving Caribbean nation uses the color black to represent its African heritage and soil? The answer is Antigua and Barbuda. Antigua and Barbuda is passionate about cricket and has produced world-class players like Viv Richards. Its flag's black triangle symbolizes the African heritage of its people and the rich soil of the islands.

Which country shares the world's longest international land border with the United States? The answer is Canada. Canada and the United States share a border stretching approximately 8,891 km (5,525 miles), making it the longest international land border in the world.