The Seven Natural Wonders of America. Death Valley (California) Death Valley is a 250 km valley between two Californian mountain ranges. It is the hottest. - презентация

1 The Seven Natural Wonders of America

2 Death Valley (California) Death Valley is a 250 km valley between two Californian mountain ranges. It is the hottest and the lowest place in the USA. Summer temperatures in Death Valley can reach 54 o C and for several months of the year the average night-time temperature is over 27 o C.

3 Giant Redwood and Bristlecone Pine Trees (California) General Sherman, a giant redwood tree in the Sequoia National Park measuring 84 meters tall, is the largest plant in the world. It is also 3000 years old, but it isn t the oldest tree in the world. That s also in California. The bristlecone pine grows in the White Mountains, and it is the oldest living thing on earth. The most famous, named Methuselah, is over 4000 years old.

4 The Grand Canyon (Arizona) The Grand Canyon, eroded over thousand of years by the Colorado River and its tributaries, is 400 km long. It is 2000 meters deep. It is one of the most important geological sites in the world (some of the rocks are over 1800 million years old) and it is home to a great diversity of wildlife.

5 Niagara Falls (New York State and Ontario, Canada). The Niagara Falls are formed where the Niagara River flows between Lake Erie and Lake Ontario. There are two main waterfalls: the Horseshoe Falls in Canada and the American Falls in the USA. The falls are 55 meters high, and cubic meters of water flows every minute.

6 Glacier Bay (Alaska) Glacier Bay is a wilderness of mountains, glaciers, estuaries, beaches and lakes which was covered by ice only 200 years ago. The glaciers of Glacier Bay are still retreating new landscapes every few years. Glacier Bay is now a nature reserve and it used extensively for scientific research.

7 The Great Lakes The Great Lakes (Lakes Superior, Michigan, Huron, Erie and Ontario) form the largest system of fresh water on earth, containing 18% of the world s supply. Lake Superior is the largest and the deepest. It has the largest surface area of any freshwater lake in the world (81000 sq. km).

8 Old Faithful (Idaho) Much of the Yellowstone National Park (which extends into Idaho, Montana and Wyoming) is volcanic rock, and there are over geysers and hot springs in the park – the biggest concentration in the world. The most famous geyser, called Old Faithful, erupts about every 75 minutes. The eruptions last for 1-5 minutes, and shoot hot water up to 50 meters in the air.

9 by Malcoci Mihaela Thank you for your attention!