Terravel · Quizzes · North America

North America geography quiz

8 questions about real places across North America — deserts, lakes, caves and valleys most people have never heard of. Answer each one and the explanation appears straight away. No sign-up.

Question 1

Which mountain range rising abruptly from flat plains gets its dark name from evergreen forests, not rock color?

The Black Hills in South Dakota and Wyoming are named for their distinctive dark appearance caused by dense evergreen tree coverage, not the underlying geology—a feature that distinguishes them from the other mountain ranges listed.

Question 2

Which North American desert's white playa floor was once the bed of a Pleistocene Ice Age lake?

The Black Rock Desert in Nevada preserves the ghostly imprint of Pleistocene Lake Lahontan, whose evaporated waters left behind the distinctive white silt playas that characterize the landscape today.

Question 3

Which ancient mountain range once rivaled the Rockies in height but has been worn down to rolling ridges over millions of years?

The Blue Ridge Mountains are an ancient physiographic province of the Appalachian Highlands that have been significantly eroded over time, whereas Lake Manitoba is a glacial lake, Viñales Valley is a Cuban karst landscape, and Lake Saint Clair is a Great Lakes water body—none of which are mountain ranges shaped by extreme geological erosion.

Question 4

Which mountain range forms the easternmost edge of a 4,000-mile system stretching from Alaska to Mexico?

The Canadian Rockies are the easternmost boundary of the North American Cordillera, a continuous mountain system spanning over 4,000 miles from central Alaska through British Columbia and Alberta, ultimately reaching the Isthmus of Tehuantepec in Mexico.

Question 5

Which mountain range is protected by a 700,000-acre park—larger than Delaware—that shields it from commercial development?

The Catskill Mountains are defined by the Catskill Park, a vast 700,000-acre protected forest preserve in southeastern New York that uses state law to prevent extensive commercial encroachment, making it one of America's quietest mountain regions.

Question 6

Which North American location harbors selenite crystals so massive that early explorers mistook them for frozen waterfalls?

The Cave of the Crystals beneath the Naica Mine in Chihuahua, Mexico contains giant selenite crystals that early explorers confused with frozen waterfalls due to their enormous scale and geometric formations.

Question 7

Which North American valley stretches 450 miles between two mountain ranges, forming a vast flat corridor through a U.S. state's interior?

The Central Valley is the correct answer because it is the only location among the options that is a 450-mile-long flat valley bounded by the Coast Ranges and Sierra Nevada in California; the other three options are lakes or a different valley entirely.

Question 8

Which North American desert is younger than most ancient civilizations yet ranks as the continent's largest hot desert?

The Chihuahuan Desert is only 8,000 years old—making it remarkably young for a desert—yet it is North America's largest hot desert, a distinction that makes it unique among the options provided.

Come back tomorrow for a new one.