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World Geography
What is geography?

Well, it depends on who you ask.  Geography is such an exciting subject because it
encompasses so many different areas.  Here are five major types of geography:
physical geography, political geography, human geography, economic geography,
historical geography.  In fact, we could add several more types if we included
more specific areas of study.  
Just as there are different types of geography, there are many different definitions
of geography.  For our purposes we are going to use a simple definition that
anyone can learn.

Geography is defined as the study of Earth’s physical, political, and cultural features.

The word geography can actually be broken down into several word parts that
convey meaning.

geo” is a word part that means “Earth
graph” is a word part that means “write
y” is a word part that means “characterizes by
  Where is it?
This sounds like a easy question to answer.  It is,but there are many different ways of
answering it.  In geography, we usually think of location in two different ways-
and absolute location.

Relative location can be defined as a general location description or the approximate
geographic location of one location to another location.
The key word in this definition is approximate.  For example, someone might ask you
to meet them at the train station in Oxford.  This sounds like a good place to meet, but
where in the station will you actually meet?
Other examples of relative location are: most highway signs, "two blocks over to the
west," "five houses down," and "near the coast."  
Using a relative location is generally best used to describe locations that are familiar
to all of the people involved.
A better way to communicate is to use an absolute location. Absolute location can be defined as the exact geographic location (usually
described in terms of a specific address or geographic coordinates)

For example, let’s say you wanted to send a birthday card to your grandmother.  You need to use an absolute location so that it will
arrive at your grandmother’s house, not simply the town she lives in. Writing that she lives “down near the mall” won’t work either
because there likely hundreds of houses around the mall.  So, whether you are meeting someone for an appointment or sending
someone a letter, an absolute location is essential.  Just remember, use a
specific address.
Geographic coordinates are a second type of absolute location that
will give a precise location.  Geographic coordinates use invisible
lines of longitude and latitude to describe a precise location.  These
locations are expressed using a series of numbers.  Geographic
coordinates, longitude and latitude, are usually described using
degrees, minutes, and seconds.       

The concept of hemispheres is directly tied to the use of geographic
coordinates.  A hemisphere can be defined as “half of a sphere.”  
Two hemispheres come together to form a complete sphere.  

Geographers divide the world into two sets of hemispheres.  

The first set of hemispheres divides our planet between a northern
hemisphere and a southern hemisphere.  The
equator forms the
boundary between the two hemispheres.  

The second set of hemispheres is occurs at the
prime meridian.
It divides the plant into an eastern hemisphere and a western
Lines of Latitude
Latitude is defined as imaginary grid lines that run east-west and
measure distance north and south of the equator
Latitude lines are also called
parallels because they never touch!  
The lines of latitude divide the world into degrees.  The equator
sits at zero degrees latitude.  Since it sits in the middle of the
globe, the
equator is the longest line of latitude.  
Lines that are located north of the Equator are referred to as
numerical degree and the words “North of the Equator.”   These
locations are located in the
northern hemisphere.   
Lines that are located south of the Equator are referred to as the
numerical degree and “South of the Equator.”  These locations are
located in the
southern hemisphere.

Lines of Longitude
Longitude is defined as imaginary grid lines that run between the  
north and south poles
.  Lines of longitude are also referred to
meridians.  Here is an easy mnemonic tool to remember that
longitude, and not latitude, begins and ends at the poles- Santa has
longitude way to travel from the North Pole!  All of the lines of
longitude are the same length since they all span the distance
between the poles.  
Zero degrees longitude passes through the city of
Greenwich in
United Kingdom.   This is a very important line of longitude
because it used to separate the Earth into the western and eastern
hemispheres.  All locations west of the Prime Meridian ( 0° )
are known as a numerical degree and the words "west longitude."  
These locations are in the
western hemisphere.  Locations that
are located east of the Prime Meridian are known by a numerical
degree and "east longitude."  These locations are all in the
eastern hemisphere.  The eastern and western hemisphere
boundary on the opposite of the planet is located at 180° longitude.
Time Zone Question to Ponder - How do the men and women aboard the International Space Station determine the
correct time in space?
Geographers use a system of imaginary lines that form a mesh across the globe.  These lines are called longitude and latitude.
Time Zones
The lines of longitude, or meridians, are divided to reflect the 24 hours in a day.  Every hour the Earth rotates 15° and will make
a full circle of 360° in one day.  The time zones of the world basically are divided along these 15° segments.  
Continents - The Big Seven
There are seven generally recognized and accepted continents in the world.  

Africa, Antarctica, Asia, Australia, Europe, North America, and South America

The word "generally" is used because some people consider Asia and Europe to be one continent- the Eurasian continent.  Those
who think that Europe is a distinct continent usually use the
Ural Mountains in Russia, the Caucasus Mountains, and the Black
as the border between Europe and Asia.  This map convention recognizes most of Turkey (the Anatolian Peninsula) as being
in Asia, but the portion of the opposite side of the Bosporus Strait and Sea of Marmara, known as
Thrace, as being located in
The continent of Australia is sometimes referred to as
Oceania and it is usually accepted instead of "Australia."
Although some locations are distant islands away from continental landmasses, they are usually grouped with or thought as being
part of the closest continent.  For example, most of the islands in the Caribbean Sea are described as being in North America.  geography - nature - education