THE UNITED STATES OF AMERICA

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THE UNITED STATES OF AMERICA
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CLIMATE

• Temperatures reach both extremes of the scale
  from freezing cold 30ºC in Alaska to a boiling
  hot 60ºC in Californias Death Valley.
• On the southwest there is a desert climate, which
  is opposite of the east which has ocean climate.
• On the south is tropical climate, and on the
  north is humid continental climate.

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GRAND CANYON

• Took 3-6 million years to form erosion continues
  to alter its contours.
• The Grand Canyon become a national park in 1919.
• It was formed by the Colorado River, which flows
  west through the canyon and averages about 300
  feet.
• Many people consider it to be one of the seven
  wonders of the natural world.
• The Grand Canyon is 277 miles (446 kilometers) in
  length.
• As well as sightseeing, hiking and rafting are
  also popular in the area.

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NIAGARA FALLS

• The Niagara Falls are located on the border of
  Ontario, Canada and New York, USA.
• The Niagara Falls are made up of 3 waterfalls,
  the American Falls, the Bridal Veil Falls and the
  Horseshoe Falls.
• The 3 waterfalls combine to produce the highest
  flow rate of any waterfall on EARTH!!!
• The Niagara Falls are a source of hydropower,
  producing large amounts of electricity.
• The Niagara River drains water from Lake Erie
  into Lake Ontario.
• The Niagara Falls were created by glacier
  activity around 10,000 years ago.
• It is illegal (and not very smart) to go over the
  Niagara Falls.
• A number of people have tried it anyway, some
  survived, some were injured and some were killed.
• The first tightrope walker to cross the Niagara
  Falls did so in 1859.
• Goat Island sits in the middle of the Niagara
  Falls, between Horseshoe Falls and Bridal Veil
  Falls.
• A monument dedicated to Serbian-American inventor
  NikolaTesla sits on Goat Island.
• The Niagara Falls are visited by around 30
  million people every year.

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MISSISSIPPI RIVER

• The length of the Mississippi River is
  approximately 3,730 km, slightly shorter than the
  Missouri River.
• The Mississippi River and Missouri River combine
  to form the longest river system in the USA and
  North America. It is also the fourth longest in
  the world.
• The first bridge built across the Mississippi
  River was in 1855 with the first railroad bridge
  finished a year later in 1856.
• At its widest point, the Mississippi River
  stretches out over 11 km in width.

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RIO GRANDE

• The Rio Grande is 3,000 km long, the fifth
  longest river in the United States Of America.
• A 2,000 km segment of the river forms the
  international boundary between Mexico and the
  United States Of America.
• The Rio Grande begins in the Colorado Mountains,
  courses through New Mexico, forms the border
  between Texas and Mexico, and flows into the Gulf
  of Mexico.

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GREAT LAKES

• The Great Lakes Superior, Huron, Michigan,
  Ontario and Erie make up the largest body of
  fresh water on Earth, accounting for one-fifth of
  the freshwater surface on the planet at 6
  quadrillion gallons. The area of all the Great
  Lakes 246,463 square kilometers.
• 21 of the world's surface freshwater is
  contained in these lakes.
• The waters of the Great Lakes are so cold and
  most ship wrecks have been almost perfectly
  preserved including some of the people.
• Storms on the Great Lakes can rival almost any
  Ocean Storm and there have been record wave
  heights recorded between 9 and 11 metres.

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RED RIVER

• The Red River drains an area of some 241,000
  square km.
• It is a tributary of the Mississippi River.
• The Red River is 2,080 km long for about half
  this distance, it serves as the Texas-Oklahoma
  boundary.
• The river and its valley were the site of the Red
  River Campaign in the American Civil War.

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PRESENTATION DONE BYALEKSA TRIVIC,ANJA ANDRIC,
IVAN VEN,LAZAR PAVLOVIC ANDPETAR LOVIC