Aim: How do we use latitude and
longitude to find locations?
Topic: Unit
1
Main Idea: Latitude and Longitude
1) Define latitude:
Latitude is defined
as the number of degrees
above or below the equator.
2) Define longitude:
Longitude is
defined
as the number of
degrees east or west
of the Prime Meridian.
 _________________
 __________________
 Parallel
 Lines
lines
 Run east to west
 Measures distances north
or south
 Reference line is the
equator
 A.k.a. parallels
 0-90o
that meet at the
poles
 Run north to south
 Measures distances east
or west
 Reference line is the
prime meridian
 A.k.a. meridians
 0-180o
3) What is the North Star? How is it used
in navigation?
The altitude of Polaris is
equal to the latitude.
What is the international date
line?
It is the 180 degree line of longitude that separates
the eastern and western hemispheres.
Summary:
What is
the latitude for these locations?