Topographic Features by 127AEoW

VIEWS: 156 PAGES: 37

									                           Chapter 10




Topographic Features
Spatial representation of the surface features of a place or
 region on a map, indicating their relative positions and
                        elevations.
Drainage pattern
Drainage Basin
Drainage Basins of North America
Dentritic
Drainage
Pattern
Rectangular
 Drainage
  Pattern
 Trellis
Drainage
Pattern
 Radial
Drainage
Pattern
Annular
Drainage
Pattern
Parallel
Drainage
Pattern
Deranged
Drainage
 Pattern
   A
Fourth
Order
Stream
Landforms
                   Concepts
 Landforms are features that make up the Earth’s surface.
 Some landforms are created by the action of wind, water and
  ice.
 Mountains, faults, and volcanoes are created by the
  movement of the Earth’s crust and other tectonic activity.
 Topographic maps and models are used to represent landforms.
US Landforms
        Mountains
A high landform with steep sides;
higher than a hill. Mountains are
found on land and on the ocean floor.
Plains




  The Great Plains are a
  large flat area of land.
          Plains




A plain has 3 main characteristics
1. Land
2. Broad, flat, or gently rolling areas
3. Low in elevation
Example: Saskatchewan prairie
Canyon




         It is a deep river
         valley with steep
         sides.
Canyon
Valley




         It is a low area between hills
         and mountains where a
         stream often flows.
Menders
          Caused by action of water
                   Mesa




This is a landform that looks like a high, flat table.
Mesas are common in the southwest United States.
                Plateau




A plateau is a high , nearly flat uplifted area composed
of horizontal layers of rock..
            Peninsula




A peninsula is land that has
water on all sides but one.
         Peninsula
             peninsula




an area of land that is nearly surrounded
by water on three sides
                   Island
It is land that is surrounded by water on all sides.
                      Types of glaciers

...definition
 A Glacier is

  part of hydrological cycle
  thick ice mass
  formed on land
  made by snow:
      accumulation
      compaction
      recrystallization
  able to flow
                      Types of glaciers

...definition
 A Glacier is

  part of hydrological cycle
  thick ice mass
  formed on land
  made by snow:
      accumulation
      compaction
      recrystallization
  able to flow
                       Types of glaciers

 Valley (or “Alpine”) glaciers
  mountainous regions
  occupy old stream valleys
  length greater than width

 Ice sheets
 Ice caps
 Outlet glaciers
 Piedmont glaciers




                               St. Mary’s Lake, Glaciar National Park, Montana
                        Types of glaciers
 Valley (or “Alpine”) glaciers
  mountainous regions
  occupy old stream valleys
  length greater than width

 Ice sheets
  large scale feature
  Greenland, Antarctica
  “continental ice sheets”
  “ice shelves” @ coasts
 Ice caps
 Outlet glaciers
 Piedmont glaciers
                        Types of glaciers
 Valley (or “Alpine”) glaciers             Iceland
  mountainous regions
  occupy old stream valleys
  length greater than width

 Ice sheets
  large scale feature
  Greenland, Antarctica
  “continental ice sheets”
  “ice shelves” @ coasts
 Ice caps
  ice cover of plateaus
  smaller than ice sheets
  e.g., Iceland

 Outlet glaciers
 Piedmont glaciers
                              Types of glaciers
 Valley (or “Alpine”) glaciers
  mountainous regions
  occupy old stream valleys
  length greater than width
 Ice sheets
  large scale feature
  Greenland, Antarctica
  “continental ice sheets”
  “ice shelves” @ coasts
 Ice caps
  ice cover of plateaus
  smaller than ice sheets
  e.g., Iceland
 Outlet glaciers
  fed by ice sheets & caps
  essentially valley glaciers
  flow to sea
 Piedmont glaciers
                              Types of glaciers
 Valley (or “Alpine”) glaciers
  mountainous regions
  occupy old stream valleys
  length greater than width
 Ice sheets
  large scale feature
  Greenland, Antarctica
  “continental ice sheets”
  “ice shelves” @ coasts
 Ice caps
  ice cover of plateaus
  smaller than ice sheets
  e.g., Iceland
 Outlet glaciers
  fed by ice sheets & caps
  essentially valley glaciers
  flow to sea
                                   at base of steep mountains
                                   fed by valley glaciers
 Piedmont glaciers
                                   variable size

								
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