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5.1 landforms and resources


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5.1 landforms and resources

  1. 1. Landforms and Resources:North America<br />
  2. 2. North America. It’s here:<br />
  3. 3. Right now, we’re just concerned with the United States and Canada<br /><ul><li>These are the Anglo American parts and have a similar culture as later we’ll discuss Mexico.</li></li></ul><li>Varied landforms<br /><ul><li>North America has a wide variety of landforms. It has mountains, plains, deserts, tundra, etc. Let’s look at a few.</li></li></ul><li>The Eastern Lowlands<br /><ul><li>Flat level land by the eastern and Gulf coastal areas.</li></ul>The brown area along the coast is lowlands.<br />
  4. 4. Appalachian Highlands<br /><ul><li>Mountain chain that runs along the eastern U.S.</li></li></ul><li><ul><li>The Appalachians are relatively old.
  5. 5. Because they’ve been around for a long while, they’ve worn down and aren’t all that tall: they average 3,000 feet and the tallest peak, Mt. Mitchell in North Carolina is just 6,684 feet tall.</li></li></ul><li>
  6. 6. The interior lowlands<br /><ul><li>Covers most of North America
  7. 7. Relatively level
  8. 8. May have been hilly at one point, but glaciers leveled it out during the last ice age
  9. 9. Also carved out rolling hills and lakes
  10. 10. Includes the Great Plains</li></li></ul><li><ul><li>Also includes the Canadian Shield in Canada
  11. 11. Huge area around Hudson Bay</li></li></ul><li>Rocky Mountains<br /><ul><li>Large western mountain chain.
  12. 12. 78 peaks of 12,000 feet or more above sea level</li></li></ul><li>
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  18. 18. <ul><li>The Rockies are young and haven’t faced the extra 320 million years of erosion that the Appalachians have suffered, so they are much taller.</li></li></ul><li><ul><li>The rain runoff and annual snowmelt from the Rockies also supply nearly ¼ of the U.S. with fresh water.</li></ul>Summer<br />Winter<br />
  19. 19. <ul><li>Cold reflective mountain reservoirs. Makes you want to go there, doesn’t it?</li></li></ul><li>Continental Divide<br /><ul><li>All rivers flow either east or west. The continental divide is the line at which they go one way or the other.</li></li></ul><li>Islands<br /><ul><li>Canada has a nice assortment to the north in the Arctic Ocean.</li></li></ul><li><ul><li>There’s also the Aleutian Islands tailing off of Alaska
  20. 20. Did you know that during WWII, two small Aleutian islands at the tail end were captured and held by the Japanese?
  21. 21. It was the last time a U.S. enemy invaded and held American soil.</li></li></ul><li><ul><li>There are also the Hawaiian islands, but while they are part of the United States, they are not part of North America.
  22. 22. All the same, they’re beautiful and I will use this excuse to put up some beautiful pictures of the islands.</li></li></ul><li>Jurassic Park falls<br />
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  26. 26. Back to facts…<br />Resources<br /><ul><li>North America is blessed with lots of natural resources. Among them:
  27. 27. Water
  28. 28. It’s got oceans or seas on four sides (Arctic, Atlantic, the Gulf, and Pacific) which is good for fishing and trade
  29. 29. It’s got plenty of lakes including the…</li></li></ul><li><ul><li>Great Lakes
  30. 30. On a trivia item, note that Lake Michigan is the only great Lake that’s entirely within U.S. boundaries. The rest are shared with Canada.</li></li></ul><li><ul><li>Nearly 20% of the earth’s fresh surface water is in the Great Lakes.
  31. 31. It’s about 6 quadrillion gallons. That’s 6,000,000,000,000,000.
  32. 32. It’s enough to cover the lower 48 states with 9.5 feet of water.
  33. 33. That’s a lot of water.</li></li></ul><li>And they look pretty from space.<br />
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  38. 38. <ul><li>Rivers
  39. 39. North America has a very large river system in the Mississippi-Missouri-Ohio
  40. 40. The Missouri and Ohio rivers flow into the Mississippi, thus making them tributaries of the Mississippi</li></li></ul><li>
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  43. 43. <ul><li>North America also has lots of forests for timbers, lots of minerals, oil, natural gas, and a ridiculous amount of coal.
  44. 44. The oil sands of Alberta are estimated to hold up to 180 billion barrels of oil, second only to Saudi Arabia’s 259 billion barrels.
  45. 45. The trick is profitably getting the oil out of the sands.
  46. 46. As for coal, the U.S. has so much that it’s estimated that even with increased demand, there’s enough to last us another 300-400 years.</li></li></ul><li>