Ancient Engineering Great Engineering Feats Engineering Design
100
What are the Pyramids
The Egyptians constructed more than 100 of these with the Great one taking a relatively quick 23 years to build
100
What is the Hoover Dam
The USA's largest producer of hydropower this Washington structure has 12 million cubic yards of concrete
100
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
200
What is the Leaning Tower of Pisa
This building in Italy tilts 3.97 degrees off the vertical
200
What is the Skywalk
This horseshoe-shaped glass-bottomed structure extends 4000 feet over the Colorado River in the Grand Canyon
200
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
300
What is the Seven Wonders of the World
2nd c. historian Antipater of Sidon recorded this septet of engineering achievements
300
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
300
What is iron
The Eiffel Tower was built using 2.5 million rivets & 14 million pounds of this material
400
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
400
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
400
What is a Windmill
It was the Persians not the Dutch who invented this energy-producing machine to grind grain
500
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
500
What is the Chunnel
The volume of material excavated for this project added 90 acres to the size of Great Britain
500
What is a Caisson
From the French for large box it's a watertight structure allowing men to work underwater






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