Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7th
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Write in detail about the drainage of North America. - Social Science

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Long Answer

Write in detail about the drainage of North America.

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Solution

Drainage:

  1. Many rivers flow across this land and some of them following the valleys are formed by the glaciers.
  2. The Mississippi and Missouri rivers are the longest rivers in North America.
  3. The Mackenzie River is the second-largest drainage basin in North America. It has its source from Great Slave Lake and drains into the Arctic Ocean.
  4. St. Lawrence has its origin in Lake Ontario which flows northeast and drains into the Atlantic Ocean.
  5. The plateau of the west has been cut deeply by the River Columbia and its tributary which forms many gorges called Canyons. ,
  6. The most famous is the Grand Canyon cut by the River Colorado which all flows over the plateau of Columbia.
  7. The River Yukon rising in the northwest of the Western mountain system is frozen for eight months in the year.
  8. The River Rio Grande flows into the Gulf of Mexico and forms the boundary between USA and Mexico.
  9. The most important chain consists of five lakes. The biggest is Lake Superior and it is the largest freshwater lake in the world.
  10. Lake Winnipeg, Great Bear Lake, and Lake Athabasca are some of the other lakes in Canada.
Concept: Drainage in North America
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