The Leaning Tower of Pisa is located in which country? Question 1 options:

France

Norway

Italy

The United States

Question 2 (1 point)
When did construction on the Tower of Pisa begin?

Question 2 options:

1370 AD

1173 AD

1641 AD

891 AD

Question 3 (1 point)
When was construction on the original Tower of Pisa completed?

Question 3 options:

1173

1641

891

1370

Question 4 (1 point)
Why does the Tower of Pisa lean?

Question 4 options:

The engineers did not use a level when they built it.

People pushed on it.

The wind blew it over.

The foundation was not solid.

Question 5 (1 point)
Engineers began to stabilize the Leaning Tower of Pisa between 1990 and 2008 AD. How?

Question 5 options:

Hundreds of people are holding it up day and night.

It has lots of suspension cords holding it up.

Ground was slowly removed from underneath one side of the tower.

A crane pushed the top of it upright.

Question 6 (1 point)
Where did the voyage of the Titanic begin?

Question 6 options:

The United States

Canada

England

Iceland

Question 7 (1 point)
What caused the Titanic to sink?

Question 7 options:

There was a huge storm.

It hit an iceberg.

There were too many people onboard.

Everyone stood on one side of it.

Question 8 (1 point)
How many people died when the Titanic sank?

Question 8 options:

Around 100

Only Jack and Rose

1500 or more

At least 3000

Question 9 (1 point)
When did the Titanic sink?

Question 9 options:

January 1, 1938

April 15, 1912

June 25, 1963

September 3, 1905

Question 10 (1 point)
What was one change that was made after the Titanic tragedy?

Question 10 options:

Ships must have a lifeboat for every person on board.

No more than 100 people can be on a boat at a time.

No boats are allowed to be named the Titanic.

England does not build ships anymore.

Question 11 (1 point)
In which state was the Tacoma Narrows Bridge located?

Question 11 options:

Ohio

Washington

California

Pennsylvania

Question 12 (1 point)
What body of water did the Tacoma Narrows Bridge cross?

Question 12 options:

The Pacific Ocean

The Mississippi River

Lake Erie

Puget Sound

Question 13 (1 point)
What happened to the first Tacoma Narrows Bridge?

Question 13 options:

They never built it.

It collapsed.

It was started, but they never finished building it.

Money ran out, so they abandoned the project.

Question 14 (1 point)
What caused the Tacoma Narrows Bridge disaster?

Question 14 options:

The bridge was not designed to withstand high winds.

There were too many cars on the bridge.

The foundation crumbled.

The bridge was old and rusty.

Question 15 (1 point)
What lesson did engineers learn from the Tacoma Narrows Bridge disaster?

Question 15 options:

Test for environmental factors like strong winds.

Do not use steel cables.

Do not try to build long bridges.

Bridges should not be built over water.

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1. Italy

The Leaning Tower of Pisa is in the city of Pisa, in Tuscany, a region in west-central Italy. More specifically, the tower is on the grounds of the city's cathedral complex, which is known as the Campo dei Miracoli or Piazza dei Miracoli, the “Square of Miracles.”

2. August 9, 1173

While there has been much controversy over the real identity of the architect who constructed the tower, it is Giovanni di Simone whose name is majorly attributed for designing this human marvel! The construction began with full force on 9th August 1173 and continued until 1178.

3. 1360

By the time it was completed in 1360, modern-day engineers say it was a miracle it didn't fall down completely. Though the cathedral itself and the adjoining baptistery also leaned slightly, it was the Torre Pendente di Pisa, or Leaning Tower of Pisa, that became the city's most famous tourist attraction

4. It became apparent that the Leaning Tower of Pisa was leaning in the late 1170s, after completion of the first three of the tower's planned eight stories. The leaning was caused by the uneven settling of the building's foundations in the soft ground.

5. Cables were installed to help prevent leaning. 50 cubic yards of soil were removed from the high side of the tower (1990). (Engineers said it would be stable for 300 years) More dirt (77 tons of soil) were removed (2008) to stabilize the movement.

6. April 10, 1912, 12 p.m. - The RMS Titanic sets sail from Southampton, England, on its maiden voyage, with approximately 2,220 passengers and crew. April 10, 1912, 6:30 p.m. - Arrival in Cherbourg, France. April 10, 1912, 8:10 p.m. - Leaves Cherbourg. April 11, 1912, 11:30 a.m. - Arrival in Queenstown, Ireland.

7. Why did the Titanic sink? The immediate cause of RMS Titanic's demise was a collision with an iceberg that caused the ocean liner to sink on April 14–15, 1912. While the ship could reportedly stay afloat if as many as 4 of its 16 compartments were breached, the impact had affected at least 5 compartments.

8. 1,500 people

9. April 14, 1912

10. After the Titanic, ships started being redesigned for better safety. The ship's bulkheads were made higher so water could not get in and bottoms were stretched to create double hulls. These changes all contributed to better, safer, and more reliable sea travel.

11. Washington

The Tacoma Narrows Bridge was built in Washington during the 1930s and opened to traffic on July 1, 1940. It spanned the Puget Sound from Gig Harbor to Tacoma, which is 40 miles south of Seattle

12. Slender, elegant and graceful, the Tacoma Narrows Bridge stretched like a steel ribbon across Puget Sound in 1940. The third longest suspension span in the world opened on July 1st.

13. The first Tacoma Narrows Bridge opened to traffic on July 1, 1940. Its main span collapsed into the Tacoma Narrows four months later on November 7, 1940, at 11:00 a.m. (Pacific time) as a result of aeroelastic flutter caused by a 42 mph (68 km/h) wind. The bridge collapse had lasting effects on science and engineering.

14. The Tacoma Narrows Bridge collapsed primarily due to the aeroelastic flutter. In ordinary bridge design, the wind is allowed to pass through the structure by incorporating trusses. In contrast, in the case of the Tacoma Narrows Bridge, it was forced to move above and below the structure, leading to flow separation.

15. "Blind Spot"-- Design Lessons of Gertie's Failure. At the time the 1940 Narrows Bridge failed, the small community of suspension bridge engineers believed that lighter and narrower bridges were theoretically and functionally sound.

Explanation:

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