Post on 03-Jun-2018
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MATHEMATICS FORM 5
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NORTH POLE
SOUTH POLE
EASTWEST
LONGITUDELATITUDE
MALAYSIA
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Great circle is any circle
that passes through the
north and the south
poles or with the center
as the centre of the
earth.
GREAT CIRCLE
O
N
S
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One-half of a greatcirclejoining the North
and the South Poles is
called a meridian.
S
N
OO
Longitude of a meridian is
determined by the angle
between its plane and the
plane for Greenwich Meridian
(east or west).
Greenwich Meridi
an 0 o
LONGITUDE
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Example :
G is stated on the Greenwich
Meridian .
L is 80o to the right of G.
So the longitude of L is 80oE.
K is 60oto the left of G.
So the longitude of K is 60o
W.
K and M is a diameter of a
circle centred C.
KCM = 180o.
So Longitude M is 120oE
N
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EXERCISE 1: State the longitude of (a) dan (b)
(a) 100oE/ 100oW
(b) 80oE/ 180oW
(a)
(b)
N
E
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Where is our country, Malaysia stated ?
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The Great Circle
which the plane
are perpendicular
to the poles is
known as the
equator
Marked as 0o
North direction
N
S
0
o
South direction
The circle
with plane
which are
parallel to the
equator plane
is known as
parallel of
latitude
LATITUDE
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Latitude
Get further information aboutlatitude and longitude at the
following address:
http://www-
spof.gsfc.nasa.gov/stargaze/Slatlong.htm
http://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htmhttp://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htmhttp://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htmhttp://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htmhttp://www-spof.gsfc.nasa.gov/stargaze/Slatlong.htm8/11/2019 Earth as Sphere
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Latitude Of a Point
Latitude is an angle at the centre of the earththat
subtended by a meridian beginning from the equator
to the parallel of latitude which is either to the North
or to the South of the equator.
Latitude A is 50
o
N
Latitude B is 10
o
S
NORTH
SOUTH
EQUATOR
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N NN
N
S
S
S S
Look at the angle made by equator
plane and parallel latitude 60
o
N
The angle between the
equator plane and the north
plane is 90
o
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Example :
Based on the diagram, O is
the centre of the earth
State the latitude of point
a) W b) X c) Y
Solution:
a) W is 72
o
to the north equator.
So the latitude for W is 72
o
N.
b) X is 65
o
to the south equator
So the latitude for X is 65
o
S.
c) Y is located at the same parallel latitude with W.
Thus, latitude for Y is 72
o
U.
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Exercise 2 : State the latitude of the following
point :
1. Latitude Q is
3. Latitude L is
Q
N
2. Latitude P is
68
o
N 55
o
N 68oN 68 oS5o S 55o N
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Location Of A Place
Location of a place at the surface of the earth can
be determine by its latitude and longitude
For example, based on the above figure Paris is located
at point P
Location of Paris is written as 48
o
50 N,20
o
20 E
What is the location of Q ?
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LONGITUDE = 100O E
LATITUDE = 5ON
MALAYSIA ( 5O
N, 100O
E )
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E1 E 2
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E1 E2