Latitude and Logitude

8/7/2019 Latitude and Logitude

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This is an example of atypical graph we areall familiar with.

The graph is made upof different pointswith lines that connect

the points. Each point has two

values: The X value that

runs along thehorizontal X axis

The Y value thatruns along the

vertical Y axis


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A point can alsohave negative

(-) values Negative X

values are to the

leftof the origin(0,0)

Negative Yvalues are belowthe

origin

X

Y

(-X,+Y)

(+X,-Y)

(+X,+Y)

(-X,-Y)

(0,0)


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Let the X axis be theEquator.

Let the Y axis be thePrime Meridian

that runs throughGreenwich outside

of London.

Lat/Long are the 2grid points bywhich you can

locate any point on

earth.

Y

X


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Let each ofthe fourquarters then

bedesignatedby North or

South andEast or West.

N

S

EW


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The N tells us werenorth of theEquator. The S tellsus were south of

the Equator.

The E tells us thatwere east of the

Prime Meridian.The W tells us thatwere west of the

Prime Meridian.

(N, W) (N, E)

(S, W) (S, E)


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Latitude is thedistance from the

equator along theY axis.

All points along theequator have a valueof 0 degrees latitude.

North pole = 90N

South pole = 90S

Values areexpressed in termsof degrees.

Y

X

90S

90N


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Longitude is the

distance from theprime meridianalong the X axis.

All points along the

prime meridian havea

value of 0 degreeslongitude.

The earth is dividedinto two parts, orhemispheres, of

east and westlongitude.

Y

X

180W 180E


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SEPARATES 2 CALENDAR DAYS.

America to Asia gain a day

Asia to America lose a day


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The world rotates (spins) 360 in 24 hours.

360 / 24 hours = 15 per hour

The world has 24 time zones, each l5 apart.

THERE IS A 1 HOUR TIMEDIFFERENCE FOR EVERY 15 OF

LONGITUDE


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The world rotates west to east(counterclockwise), time zones to the east areahead of the those time zones to the west


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EAST INCREASE

Time is forward to all places to the east

WEST LESS

Time is backward to all places to the west


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If it 9 p.m. at Position D, what time is it at position C? PositionB?

If it is 1 p.m. at Position X, at which location is the time 5 p.m.


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W E

SNorth America is in the Northern Hemisphere because itis north of the Equator. North America is in the WesternHemisphere because it is west of the Prime Meridian.


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Example: Two students record a

difference in local time of two

hours. How many degrees of

longitude apart are they?


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Documents

Latitude and Logitude