Boys against Girls question contest: We didn’t know how many stories high Hoover Dam is. I have found this:
Where is the powerplant located?
In a U-shape structure at the base of the dam. Each powerplant wing is 650 feet long, 150 feet above normal tailrace water surface, and 299 feet (nearly 20 stories) above the powerplant foundation. In all of the galleries of the plant there are 10 acres of floor space.
If every 299 feet is about 20 stories high, and Hoover Dam is 726′ approx, we may say it’s above 40 stories high. The boys said around 60? I think we may call the contest a tie. We’ll play it again in two Tuesdays, if you want, with questions from next class.
Last class, we talked about the Niagara Falls, how they have two sides to them, the Canadian (Horseshoe) and the USA (Bridal Veil). Here you can see pictures of both sides, and each side as well.
As the years passed, the process of erosion took place, (and still does) five distinct ‘gorges’ were formed-Lewiston Brange Gorge, Old Narrow Gorge, Upper & Lower Great Gorges and the Whirlpool Narrow Gorge.
Approximately 500 years ago the river encountered an obstacle that caused it to ‘split into two channels’, thus Goat Island was formed named after John Stedman whose goat herds froze to death in the winter of 1780). This was the original sediment left from a vanished Lake Tonawanda (an Indian name).
More interesting information on the falls:
The first person to go over the Falls in a barrel and survive was a 63 year old female schoolteacher.
High wire tightrope acts used to be performed across the river. Most notably was “Blondin” who once actually carried his manager across on his back, stopping midway to rest !
The Falls make a tremendous sound as the water goes over and lands at the bottom.
Twenty percent of the worlds freshwater lies in the Great Lakes, and most flows over Niagara Falls.
In the evenings, intense spotlights bathe the falls with different shades of color.
The word “Niagara” is derived from the Iroquois Indian word “Onguiaahra” meaning “the strait”
There is an international boundary between the United States and Canada.
Before the invention of film, tourists would sketch pictures of the Falls.
The flow was also halted over both falls on March 30th 1848 due to an ice jam in the upper river.
The movies Niagara and Superman were filmed in part at the Falls.
In the past ten years, two daredevils lost their lives trying to conquer Niagara.
Maria Spelterina, a 23-year-old Italian woman, becomes the only woman to cross the gorge by tightrope. Seeking to add some drama to the events, she crosses Niagara wearing woven baskets instead of shoes and with her head covered by a paper bag.
This was the view of the first white man who saw the Niagara Falls
Last but not least, there’s a 4 minute wonderful video at the History Channel about the Niagara Falls.