Longitudes & Latitudes
What can we use to show the position of
place on the atlas or map?
 We can use latitudes and longitudes to give
the position of places on the map
What are longitudes and latitudes?
 They are imaginary vertical and horizontal
lines around the Earth.
 We measure them in degrees and use this to
give the exact position of place in the world.
Longitudes & Latitudes
What are longitudes and latitudes?
Lines of longitude are the vertical lines
in the world imaginary grid.
They go from the North Pole to the
South Pole and they are the same
length.
Lines of latitude are the horizontal lines
in the world’s imaginary grid.
 Lines of latitude are not all the same
length.
West
East
180o E and 180o W are
the largest longitude.
Australasia
The vertical lines (直線) are called longitude (經度).
The 0o is called the Prime Meridian (本初子午線) which passes
through Greenwich Observatory (格林威治天文台) near London,
England.
Greenwich Observatory
longitudes and latitudes
• To describe position more accurately, we
divide each degree of latitude and
longitude into smaller parts call minutes.
• There are 60 minutes in a degree.
• The symbol for minutes is ’
Find the location of the following
in your atlas.
City
Latitude Longitude
o
o
23
00’N
114
00’E
Hong Kong
31o15’N 122o30’E
Shanghai
o
o
1
20’N
103
50’E
Singapore
o
o
39
55’N
116
20’E
Beijing
Paris
48o52’N
2o20’E
1o = 60’ 1’=60”
Australasia
Seven Continents (七大洲) :
Four Oceans (四大洋) :
90o N (North Pole北極)
66 1/2o N (Arctic Circle北極圈)
23 1/2o N (Tropic of Cancer)
0o (Equator 赤道)
Australasia
23 1/2o S (Tropic of Capricon)
66 1/2oS (Antarctic circle)
90oS (South Pole 南極)
The horizontal lines (橫線) are called latitude (緯度). The 0o
Equator is the longest latitude. It divides the Earth into Northern
Hemisphere (北半球) and Southern Hemisphere (南半球). The
closer to the Poles, the shorter lines of latitude are.
Arctic Ocean
Pacific
Ocean
Atlantic
Ocean
India
n
Ocea
n
Europe
North
America
Asia
Australasia
Africa
South
America
Antarctica
Continents and Oceans
How many Continents in the world?
 There are seven Continents in the world.
How many Oceans in the world?
 There are four Oceans in the world.
Which continents lie between the Atlantic
Ocean and Pacific Ocean?
 North America and South America
Which continent lie between the Indian
Ocean and the Atlantic Ocean?
 Africa
Where is Hong Kong?
Can You find and describe the location
of Hong Kong.?
Hong Kong is located at latitude
22o30’N and longitude 114o10’E.
What is the weather of Hong Kong?
Hong Kong is hot .
Where is Hong Kong?
Can you say that Hong Kong has a
good position in Asia?
Yes, it is because it lies between South
East Asia and Japan.
What is the advantages of the good
position of Hong Kong?
This central location helps us to develop
trade and business.
Japan
Thailand
China
Malaysia
Beijing
Guangzhou
Seoul
Tokyo
Shanghai
Manila
Bangkok
Jakarta