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 & LatitudesWhat 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.

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, Engla

nd.

EastWest180o E and 180o W are the largest longitude.

Australasia

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 LongitudeHong KongShanghaiSingaporeBeijingParis

1o20’N 103o50’E

31o15’N 122o30’E

23o00’N 114o00’ E

39o55’N 116o20’E

48o52’N 2o20’E

1o = 60’ 1’=60”

Seven Continents (七大洲 ) :Four Oceans (四大洋 ) :

Australasia

0o (Equator 赤道 )

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.

23 1/2o N (Tropic of Cancer)

23 1/2o S (Tropic of Capricon)

66 1/2o N (Arctic Circle北極圈 )

66 1/2oS (Antarctic circle)90oS (South Pole 南極 )

90o N (North Pole北極 )

Australasia

Indian

Ocea

n

Atlantic

Ocean

Pacific

Ocean

Arctic Ocean

North America

South America

Africa

Europe

Asia

Australasia

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.

China

Japan

Malaysia

Thailand

TokyoSeoul

Manila

Jakarta

Guangzhou

Bangkok

Shanghai

Beijing