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Geography: The Basics.

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Mercator & Robinson Projections. The Mercator Projection is excellent for navigation ... The Mercator Projection, however, has a great deal of distortion. ... – PowerPoint PPT presentation

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Title: Geography: The Basics.


1
Geography The Basics.
  • What you should remember from the 6th and 7th
    grade !!

2
The 5 Themes of Geography
  • THEME - 1 LOCATION
  • "Where are we?"   is the question that the theme
    Location answers. Location may be absolute or it
    may be relative. 
  • An absolute location is an exact location, for
    example, latitude and longitude (a global
    location) or a street address (local location).  
  • Relative locations are described by landmarks,
    time, direction or distance from one place to
    another and may associate a particular place with
    another. ( 2 blocks past McDonalds or 100 miles
    North of Lexington.)

3
  • Theme 2 PLACE
  • What kind of place is it?  Places have both human
    and physical characteristics, as well as images.
  • Physical characteristics include mountains,
    rivers, soil, beaches, wildlife, etc...  
  • Places have human characteristics also.  These
    characteristics are created by the ideas and
    actions of people and result in changes to the
    environment such as buildings, roads, clothing,
    and food habits.

4
  • Theme 3 HUMAN/ENVIRONMENTAL INTERACTION
  • How do humans and the environment affect each
    other?  We change the environment and then
    sometime Mother Nature changes it back.  For
    example, floods , Hurricanes, tornados and
    earthquakes.There are three key concepts to
    human/environmental interaction
  •  Humans adapt to the environment.  Humans modify
    the environment.  Humans depend on the
    environment. People depend on rivers for water
    and transportation.   People modify our
    environment by heating and cooling buildings for
    comfort.   People adapt to the environment by
    wearing clothing that is suitable for summer and
    winter rain and shine.
  • How have we adapted to or changed our landscape? 
    For example, in the desert even though everything
    is seemingly barren people and animals have
    adapted to a hot, dry climate and have learned to
    farm and raise animals.

5
  • Theme 4 MOVEMENT
  • The movement of people, the import and export of
    goods, and mass communication (phones, internet,
    etc) have all played major roles as people
    interact.  They travel from place to place and
    they communicate. People interact with each other
    through movement.  Humans occupy places unevenly
    on Earth because of the environment but also
    because we interact with each other through
    travel, trade, information flows (E-Mail) and
    political events.
  • Not only do humans move but also ideas and
    culture move. Things and ideas such as fashions,
    fads, music, technology move.

6
  • THEME 5 REGION
  • A region is the basic unit of study in
    geography.  A region is an area that displays a
    clear unity in terms of the government, language,
    or possibly the landform or situation.  Regions
    are human designated that can be mapped and
    studied.
  • There are three basic types of regions.
  • Formal regions are those defined by governmental
    or administrative boundaries (i. e., United
    States, Lexington, KY).  These regional
    boundaries are not open to dispute, therefore
    physical regions fall under this category (i. e.,
    The Rockies, the great lakes).

7
  • Functional regions are those defined by a
    function (for example, Leestown school district,
    or a newspaper service area).  If the function
    ceases to exists, the region no longer exists.
  • Vernacular regions are those loosely defined by
    people's perception (i. e., The South, The Middle
    East, The bluegrass).  

8
Maps and Projections
  • Map projections are attempts to portray the
    surface of the earth or a portion of the earth on
    a flat surface.
  • Some sizes or shapes may be distorted, or
    stretched unrealistically.

9
Mercator Robinson Projections
  • The Mercator Projection is excellent for
    navigation because it shows direction clearly.
    The Mercator Projection, however, has a great
    deal of distortion. In order to get the parallels
    and meridians to cross at right angles, Mercator
    stretched the areas further away from the poles
    and squeezed the areas closer to the equator.
  • The Robinson projection is unique. Its primary
    purpose is to create visually appealing maps of
    the entire world. It is a compromise projection
    it does not eliminate any type of distortion, but
    it keeps the levels of all types of distortion
    relatively low over most of the map.

10
Latitude and Longitude
  •       Any location on Earth is described by two
    numbers--its latitude and its longitude. If a
    pilot or a ship's captain wants to specify
    position on a map, these are the "coordinates"
    they would use.
  • On the globe, lines of constant longitude
    ("meridians") extend from pole to pole.
  • On a globe of the Earth, lines of latitude are
    circles of different size. The longest is the
    equator, whose latitude is zero.

Longitude
Latitude
11
Modern Mapmaking
  • Early mapmakers used stories and information from
    sailors to make their maps.
  • Modern maps are made with the help of satellites
    like Landsat.

12
Lands and ClimatesLandforms of North America
form 7 major regions.
  • Pacific Coast
  • Intermountain
  • Rocky Mtns.
  • Interior Plains
  • Appalachian Mtns.
  • Coastal Plains
  • Canadian Shield

13
Weather and Climate
  • Weather What the condition of the atmosphere is
    like at a specific time.
  • Climate The average weather over a period of 20
    30 years.
  • There are many varying climates in North America
    that may run from hot to cold and dry to wet.
  • Physical landforms, distance from the equator,
    and distance from coasts are important factors.
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