AIM: Latitude and Longitude Latitude lines run east/west but they measure north or south of the equator (0°) splitting the earth into the Northern Hemisphere and Southern Hemisphere.
Latitude
North Pole 90 80 Lines of 70 60 latitude are 50 numbered 40 30 from 0° at 20 Lines of [ 10 the equator latitude are 10 to 90° N.L. 20 numbered 30 at the North from 0° at 40
Pole. 50 the equator ] 60 to 90° S.L. 70 80 at the 90 South Pole. South Pole
Latitude
The North Pole is at 90° N
40° N is the 40° The equator is at 0° line of latitude north of the latitude. It is neither equator.
north nor south. It is
at the center 40° S is the 40° between line of latitude north and The South Pole is at 90° S south of the south. equator. Longitude
Lines of longitude begin at the Prime Meridian.
60° W is the 60° E is the 60° line of 60° line of longitude west longitude of the Prime east of the W E Prime Meridian. Meridian.
The Prime Meridian is located at 0°. It is neither east or west
180° N
Longitude
West Longitude East Longitude East
North Pole
W E
PRIME MERIDIAN S Lines of longitude are numbered east from the Prime Meridian to the 180° line and west from the Prime Meridian to the 180° line.
Prime Meridian
The Prime Meridian (0°) and the 180° line split the earth into the Western Hemisphere and Eastern Hemisphere.
Prime Meridian
Western Eastern Hemisphere Hemisphere
Places located east of the Prime Meridian have an east longitude (E) address. Places located west of the Prime Meridian have a west longitude (W) address.
Countries that have the Prime Meridian INTERNATIONAL DATE LINE 180° • SEPARATES 2 CALENDAR DAYS.
America to Asia – gain a day Asia to America – lose a day By combining latitude and longitude, any location can be pinpointed A location’s coordinates (____° N or S, ____ ° E or W) Application
N
W E
S North America is in the Northern Hemisphere because it is north of the Equator. North America is in the Western Hemisphere because it is west of the Prime Meridian. Fractions of a Degree • 1 degree = 60 minutes or 1 minute is 1/60th of a degree • Use minutes if location is not directly on the latitude/longitude line • Written ----- Degree/minute = XX° xx’ compass direction
30’ is half-way between degrees LONGITUDE AND TIME
• The world rotates (spins) 360° in 24 hours. 360° / 24 hours = 15° per hour • The world has 24 time zones, each 15° apart. THERE IS A 1 HOUR TIME DIFFERENCE FOR EVERY 15° OF LONGITUDE Greenwich, England is the logical starting point for time zones • The world rotates west to east (counterclockwise), time zones to the east are ahead of those time zones to the west ANOTHER CHEESY SAYING • EAST INCREASE Time is forward to all places to the east • WEST LESS Time is backward to all places to the west East Increase – West Less (1 hr per l5°)
If it 9 p.m. at Position D, what time is it at position C? Position B? If it is 1 p.m. at Position X, at which location is the time 5 p.m. Earth rotates west to east Solar time is based on the position of the sun NIGHT IS FALLING ON EARTH
Look at the East Coast of the United States. The lights are already lit. California the sun is still visible. This pictures shows AMERICAN CITIES at night. Saguenay Sept-Iles Thunder Bay Toronto St.John Ottawa
It’s still daylight in California Québec Montréal
Those light are Boston, New Detroit York, Philadelphia and Washington. Dallas
Puerto Rico Houston Miami
Mexico City Havana Port-au-Prince NIGHT IS FALLING ON EARTH.
Look at Paris and Barcelona, the lights are already lit, meanwhile in London, Lisbon and Madrid the sun is still visible.
Looking south, we can see the islands in the middle of the ocean.
We have a perfect view of the British Islands, Iceland and Canada. Iceland England
Italy
AFRICA Click on Link to see more about Latitude and Longitude and test yourself
http://olc.spsd.sk.ca/DE/k9mod/M apskill/mod3fl5.swf