How many countries are located in North America?
The largest North American city is...?
New York population is 8,41 million people (agglomerations - 20,63 million people), Los Angeles population is 3,98 million people (agglomerations - 17,78 million people), Mexico population is 9,1 million people (agglomerations - 21,2 million people), Ottawa population is 0,93 million people (agglomerations - 1,32 million people).
What is included in the list of the new seven wonders of the world?
Political and cultural center of the Maya at the north of the Yucatan peninsula in Mexico, people’s sacred city Itza. The Statue of Liberty entered the list of finalists, but didn’t win.
Statue of Liberty
In California and Nevada there’s a desert hollow between mountains, which is called Death Valley. There’s an interesting phenomenon here. What is it?
They leave distinct traces on the ground. It’s considered that stones with a mass from several to several hundreds of kilograms move along moistened clay under the power of strong constant wind.
Water stops to flow
There's no shadow from the Sun
In the western part of the continent there are many dried-up lakes with perfect plain surfaces.Speed equipment is tested at these lakes. One jet car riding along the bottom of a lake in Nevada state reached the highest speed. What was the record speed in km/h?
The record was craked by Trust car with a jet engine in 1997.
In Central Park in New York there’s an obelisk brought to America in 1890. This is a monument of an ancient civilization covered with inscriptions and pictured from the western and eastern parts. It is called…
For the century of staying in the USA, the obelisk was damaged more than it was after three thousand years of staying in Egypt – inscriptions on the western part almost disappeared. This is due to sulphur oxides contained in the air, which are released by industrial enterprises in the area of the Great Lakes. By combining with water in the atmosphere, these evaporations result in acid rains, which destroy architectural monuments. Since winds in this region mainly blow from west to east inscriptions preserved better on the eastern part, and on the western one they are damaged by acid rains.
The world's largest island – Greenland – is located in the north-east of North America. What country does it belong to?
Island's area — 2 130 800 km². Belongs to Denmark and is included to autonomous Danish territory - Greenland.
This evergreen coniferous tree recognized as one of the biggest in the world is considered the national asset of North America:
The individual samples of sequoia reach a height of over 110 m. The maximum age is about two thousand years.
What is it?
This large herbivorous animal is a representative of the animal world of the Pre-Ice Age. The weight of some species reaches 300 kg, but due to a long and thick coat the Musk buffalo looks more massive than it is. These are slow animals, which can pick-up the speed to 40 km/h in case of danger and run at this pace for a long time.
How did the Grand Canyon appear?
Grand Canyon is one of the non-official symbols of North America located in the territory of the American state of Arizona. Colorado river water together with wind and precipitations have been “cutting” the giant canyon in mountains during 6 million years. It spreads over 445 km, its width is 29 km and depth – 1,8 km, but its sizes continue to grow to this day.
Digged by human
Impact of meteorites
River cut it
The total length of tunnels, mines and passages of this cave is 590 km, which makes it the world’s longest cave. Here over 220 underground passes, about 20 large halls and mines are discovered, but speleologists continuously explore new sections of the cave and discover new passes. What’s its name?
The cave has nothing common with mammoths and is named so because the word “mammoth” in English means “giant”, which is well deserved.
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