unnderstanding longitude & latitude
DESCRIPTION
Unnderstanding Longitude & Latitude. Typical Graph. This is an example of a typical graph we are all familiar with. The graph is made up of different “points” with lines that connect the points. Typical Graph. Y axis. Each point has two values: - PowerPoint PPT PresentationTRANSCRIPT
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Typical Graph This is an example of a typical graph we are all familiar with.
The graph is made up of different “points” with lines that connect the points.
![Page 3: Unnderstanding Longitude & Latitude](https://reader035.vdocument.in/reader035/viewer/2022062304/56813e7a550346895da8a0da/html5/thumbnails/3.jpg)
Typical GraphEach point has
two values:
The “X” value that runs along the horizontal “X” axis
The “Y” value that runs along the vertical “Y” axis
Y axis
X axis
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Typical GraphX value is
always stated first
Followed by the Y value
The “origin” is the point where the 2 axes intersect with a value of (0,0)
(0,0)
(3,8)Y
X
(9,5)
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Typical GraphA point can also
have negative (-) values
Negative X values are to the left of the origin (0,0)
Negative Y values are below the origin
X
Y
(-X,+Y)
(+X,-Y)
(+X,+Y)
(-X,-Y)
(0,0)
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East West, North South on The Earth
Let the X axis be the Equator.
Let the Y axis be the Prime Meridian that runs through Greenwich outside of London.
Lat/Long are the 2 grid points by which you can locate any point on earth.
Y
X
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East West, North South on the Earth
Let each of the four quarters then be designated by North or South and East or West.
N
S
EW
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East West, North South on the Earth
The N tells us we’re north of the Equator. The S tells us we’re south of the Equator.The E tells us that
we’re east of the Prime Meridian. The W tells us that we’re west of the Prime Meridian.
(N, W) (N, E)
(S, W) (S, E)
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East West, North South on the Earth
That means all points in North America will have a North latitude and a West longitude because it is North of the Equator and West of the Prime Meridian.
(N, W)
Prime Meridian
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East West, North South on the Earth
What would be the latitude and longitude directions in Australia?
Prime Meridian ?
If you said South and East , you’re right!
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What is Latitude?Latitude is the
distance from the equator along the Y axis.
All points along the equator have a value of 0 degrees latitude.
North pole = 90°N
South pole = 90°S
Values are expressed in terms of degrees.
Y
X
90°S
90°N
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What is Longitude?Longitude is the
distance from the prime meridian along the X axis.
All points along the prime meridian have a value of 0 degrees longitude.
The earth is divided into two parts, or hemispheres, of east and west longitude.
Y
X
180°W 180°E
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What is Longitude?
The earth is divided into 360 equal slices (meridians)
180 west and 180 east of the prime meridian
Y
X
180°W 180°E
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What is Latitude?
Our latitude and longitude might be:
37°, 03’,13’’N
76°, 29’, 45’’W
Y
X
90°S
90°N
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So Where is (0,0)?The origin
point (0,0) is where the equator intersects the prime meridian.
(0,0) is off the western coast of Africa in the Atlantic Ocean.
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See If You Can Tell In Which Quarter These Lon/Lats Are
Located
1. 41°N, 21°E
2. 37°N, 76°W
3. 72°S, 141°W
4. 7°S, 23°W
5. 15°N, 29°E
6. 34°S, 151°E
A B
C D
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1. B
2. A
3. C
4. C
5. B
6. D
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See if you can find those same
latitude/longitude locations on a
map!
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Now you’re ready to find some locations on
a map!