Transcript What is a Map?

• 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.
• Distance North or
South of the equator.
• On a globe of the
Earth, lines of latitude
are circles of different
size. The longest is
the equator, whose
latitude is zero, while
the North Pole is 90
degrees North.
Northern Hemisphere
Southern Hemisphere
• Equator: An imaginary line that
divides the earth into two equal
parts:
1) Northern Hemisphere
2) Southern Hemisphere
• Measure the distance North
and South of the equator.
• The equator is the starting
point for latitude lines.
• This line lies at 0 degrees
latitude on the earth.
• Distance East and
West of the Prime
Meridian (Greenwich
Meridian).
• On the globe, lines of
constant longitude
("meridians") extend
from pole to pole,
like the segment
boundaries on a
peeled orange.
Every meridian must cross the
equator. Since the equator is a
circle, we can divide it--like any
circle--into 360 degrees.
Eastern Hemisphere
Western Hemisphere
• Is an imaginary line.
• Runs from pole to pole (From
North Pole to South Pole)
• Cuts the earth into two
complete halves:
1) Western Hemisphere
2) Eastern Hemisphere
• This line is at 0 degrees
longitude .
• The International Date Line is
at the 180 degree meridian.
• Areas closer to the
equator receive more
direct sunlight,
therefore, creating a
hot climate.
• Areas further away
from the equator have
less direct sunlight,
therefore, are colder.
• The world is divided
into 24 different time
zones.
• An hour is added
every 15 degrees
East of the Prime
Meridian and an hour
is lost every 15
degrees West of the
Prime Meridian.
Let’s Practice…
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