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Land Forms

Land Forms. Gulf. Definition: Part of a large body of water that extends into a shoreline, generally larger and more deep than a bay. Gulf of Mexico. World’s largest gulf 7 of the 10 busiest ports in the country 13% of US coastline 3,000 miles of coast 590,000 square miles

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Land Forms

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  1. Land Forms

  2. Gulf • Definition: Part of a large body of water that extends into a shoreline, generally larger and more deep than a bay

  3. Gulf of Mexico • World’s largest gulf • 7 of the 10 busiest ports in the country • 13% of US coastline • 3,000 miles of coast • 590,000 square miles • Avg depth = 1 mile

  4. Island • Land area • Smaller then a continent • Completely surrounded by water

  5. Australia • Not an island • Is a continent

  6. Sri Lanka • Is an island • Is a country • Belongs to Asia

  7. Greenland • Is an island • Is a territory • Belongs to Denmark

  8. Island Chain • Group of Islands belonging to the same country.

  9. Examples • Hawaii • Galapagos

  10. Plain • Area of level land • Usually at low elevation • Often covered with grasses

  11. Great Plains

  12. Tributary • Small river or stream that flows into a river

  13. Bay • Part of a large body of water that extends into a shoreline • Generally smaller than a gulf

  14. Bay • Comes from the name of spa • Baiae on the Bay of Naples in Italy

  15. Cape Cod Bay • Capes protect the water • Protects shoreline from big waves • Good place to anchor ships and establish settlements

  16. Gulf Larger Part of ocean Deeper Bay Smaller (usually) Flooded parts of a Continent Not as deep Gulf Vs Bay

  17. The “usually” • http://www.coast-nopp.org/visualization_modules/physical_chemical/basin_coastal_morphology/principal_features/continental_margins/continental_rise/bengal.html

  18. Peninsula • Body of land jutting into a bay or ocean • Surrounded by 3 sides of water

  19. Peninsula • From 2 Latin words • Mean – almost & island • Most are long and shaped like a finger

  20. Arabian Peninsula • Largest in world • 1.2 million sq. miles • ½ as big as continental US • Desert land • Temps up to 130 degrees • 35 million people

  21. Plateau • Area of flat or rolling land at a high elevation • 300 – 3,000 ft high

  22. Edwards Plateau • Elevation range from 100 – 3,000 ft • Primarily a grazing region

  23. Formed by the pushing together of plates or deposits of silt. • Can erode –

  24. Canyon • Deep & narrow valley with steep walls • Created by a river that has cut through a plateau

  25. Grand Canyon • Largest canyon in the world • 277 miles long • 1 mile deep at some points • Temp range can be 25 dg cooler at floor • Rains 20 more inches at top than bottom

  26. Up to 18 miles wide • Formed by river • Dissected plateau • Colorado River • Deep & steep

  27. Valley • Area of low land between hills or mountains

  28. Great Rift Valley - Africa • Divides Kenya down the middle • In some places this natural divide is up to 60 miles wide • narrowest point just north of Nairobi at 45 km wide. • The valley floor is at its lowest near Lake Turkana where there is virtually no distinction between the Great Rift and the surrounding desert. • As it heads south, however, the valley walls form sheer cliffs rising to 1,900 km (6,232 ft) at Lake Naivasha. • After Naivasha, the valley descends again to 580 meters (1,902 feet) at the Tanzanian border

  29. Mountain • Land with steep sides that rises sharply (1,000 ft or more) from surrounding land. • Generally more rugged than a hill • Formed by collision of Earth’s tectonic plates.

  30. Mount Everest • Part of Himalayan Mountain chain • 29,028 ft (6 miles)

  31. Isthmus • Narrow stretch of land connecting two larger land areas

  32. Isthmus of Panama

  33. Mountain Range • A series of connected mountains

  34. Himalayan Mountain Range • Of 109 mtns over 24,000 ft 96 • Stretches 1,500 miles • At northeast point joins Karakoram range (K2)

  35. Mesa • Broad flat topped landform with steep sides. • Smaller than a plateau

  36. Mesa • Spanish = table • Lifted by tectonic plates

  37. Volcano • Mountain created as liquid rock & ash erupted from the Earth

  38. Strait • Narrow stretch of water joining 2 bodies of water • Ex: Strait of Magellan, Strait of Gibraltar, Bering Strait

  39. Sea Large body of water completely or partially surrounded by land Part of World Ocean Rivers can flow into Smaller division of the ocean Lake Body of water completely surrounded by land Cut off from ocean Usually fresh Rivers can flow into Inland body of water Bodies of Water

  40. Caspian “Sea” • Actually a lake • Largest lake – 150,000 sq miles • 2 lakes in one – southern half deep (up to 3,000 feet) northern half shallow (17 feet) • Lake Volga feeds it • No outlet

  41. Coming Attractions • Plate tectonics • Volcanoes • Bodies of Water • Weather

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