Unusual Units of Measurement
World Landmarks
Obsolete Technology
100

This unit equals 1/8 of a mile and is often used in horse racing.

What is a furlong?

100

This tower in Paris was completed in 1889.

What is the Eiffel Tower?

100

This device was used to receive short messages before cell phones.

What is a pager?

200

This unit of time is sometimes defined as 1/100th of a second.

What is a jiffy?

200

This ancient structure in Peru was built by the Incas.

What is Machu Picchu?

200

This video format lost the war to VHS.

What is Betamax?

300

This astronomical unit equals about 3.26 light-years.

What is a parsec?

300

This massive wall stretches over 13,000 miles in China.

What is the Great Wall of China?

300

This magnetic storage medium was common in the 1990s.

What is a floppy disk?

400

This British unit of weight equals 14 pounds.

What is a stone?

400

This sandstone monument in Jordan is carved into rock.

What is Petra?

400

This analog tool was used for calculations before calculators.

What is a slide rule?

500

This old nautical unit equals 3 miles.

What is a league?

500

This cathedral in Russia is known for its colorful onion domes.

What is St. Basil’s Cathedral?

500

This device played music from grooved discs.

What is a phonograph?

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