Ancient Engineering | Great Engineering Feats | Engineering Design |
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What are the Pyramids
The Egyptians constructed more than 100 of these with the Great one taking a relatively quick 23 years to build
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What is the Hoover Dam
The USA's largest producer of hydropower this Washington structure has 12 million cubic yards of concrete
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What is Reverse Engineering
You'll find the category title in this 2-word term that means taking apart a device to figure out how it was made
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What is the Leaning Tower of Pisa
This building in Italy tilts 3.97 degrees off the vertical
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What is the Skywalk
This horseshoe-shaped glass-bottomed structure extends 4000 feet over the Colorado River in the Grand Canyon
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What is the Sun gear
Planetary gear systems have many uses including car transmissions; the gear set consists of a ring gear & multiple planet gears that rotate around this aptly-named gear
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What is the Seven Wonders of the World
2nd c. historian Antipater of Sidon recorded this septet of engineering achievements
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Who is (Gustav) Eiffel
In 1858 this French engineer built a railway bridge over the Garonne River; his more famous structure came 31 yrs. later
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What is iron
The Eiffel Tower was built using 2.5 million rivets & 14 million pounds of this material
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What is the Grand Canal
The first section of this waterway was dug around 400 B.C.; Kublai Khan added a link to Beijing in the 1200s
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What is the Transcontinental Railroad
On April 28 1869 laborers laid a record 10 miles of track in one day in the final stretch of building this
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What is a Windmill
It was the Persians not the Dutch who invented this energy-producing machine to grind grain
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What is an aqueduct
Containing 167 arches one of these built in 50 A.D. is still delivering water from the Frio River to Segovia Spain
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What is the Chunnel
The volume of material excavated for this project added 90 acres to the size of Great Britain
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What is a Caisson
From the French for large box it's a watertight structure allowing men to work underwater
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