Latitude and Longitude Creating Coordinates

Latitude What is Latitude? Lines of Latitude run horizontally Latitude is measured in degrees. The Equator is 0 degrees Latitude. Lines of Latitude locate places North or South of the Equator. The North Pole is 90 degrees N Latitude, and the South Pole is 90 degrees S Latitude.

Latitude North Pole South Pole 90 80 [ Lines of latitude are numbered from 0° at the equator to 90° N.L. at the North Pole. 70 60 50 40 30 20 ] Lines of latitude are numbered from 0° at the equator to 90° S.L. at the South Pole. 10 10 20 30 TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A) 40 50 60 70 80 90

Latitude The North Pole is at 90° N The South Pole is at 90° S 40° N is the 40° line of latitude north of the equator. 40° S is the 40° line of latitude south of the equator. The equator is at 0° latitude. It is neither north nor south. It is at the center between north and south. TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)

Longitude Lines of Longitude run vertically. They are also called Meridians. The Prime Meridian is found in Greenwich, England. The Prime Meridian is 0 degrees Longitude. Lines of Longitude locate places East or West of the Prime Meridian. There are 180 degrees of east Longitude, and 180 degrees of west Longitude.

Longitude Lines of longitude begin at the Prime Meridian. 60° E is the 60° line of longitude east of the Prime Meridian. 60° W is the 60° line of longitude west of the Prime Meridian. The Prime Meridian is located at 0°. It is neither east or west W E TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)

Longitude 180° N North Pole W E West Longitude East Longitude 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. TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)

Prime Meridian The Prime Meridian (0°) and the 180° line split the earth into the Western Hemisphere and Eastern Hemisphere. Prime Meridian Western Hemisphere Eastern 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. TEKS: Social Studies – 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)

INTERNATIONAL DATE LINE 180° SEPARATES 2 CALENDAR DAYS. America to Asia – gain a day Asia to America – lose a day If you took a cruise on a ship, circumventing, or traveling around the entire planet, you would experience firsthand a phenomena that would help you understand the importance of an international dateline. An explorer by the name of Ferdinand Magellan did just that in the year 1519. Magellan along with 241 men set out to travel around the entire Earth. These men kept very careful records as they traveled. Yet, when they returned, they found that their calendars were off by one day with the calendars of everyone in their home countries. What happened? How did these men loose an entire day? The day was not lost all at once. It was lost little by little, as the traveled around the Earth. If you stay in one place, a day lasts 24 hours. However, if you travel the opposite direction of the rotation of the Earth, your day will be slightly longer than 24 hours, because you are traveling ahead of the setting sun. If you travel with the rotation of the Earth, your day will be slightly shorter than 24 hours, because you are traveling into the sunset. At any one moment there are actually two days on the Earth at the same time. A new day begins at mid-night on the International Dateline. It travels around the Earth, until 48 hours later it ends back at the International dateline. If you were to travel across the International Dateline, the date would change either forward, or backward. This line actually lies in the middle of a time zone. This means that the hour on the clock would not change, as you crossed over, just the date.

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 the those time zones to the west

Combining latitude and longitude forms coordinates

A location’s coordinates (____° N or S, ____ ° E or W)

How to Find a Coordinate: East West, North South on The Earth Let the X axis be the Equator. Let the Y axis be the Prime Meridian that runs through Greenwich outside of London. Lat/Long are the 2 grid points by which you can locate any point on earth. Y X

East West, North South on the Earth Let each of the four quarters then be designated by North or South and East or West. W E S

East West, North South on the Earth The N tells us we’re north of the Equator. The S tells us we’re south of the Equator. The E tells us that we’re east of the Prime Meridian. The W tells us that we’re west of the Prime Meridian. (N, W) (N, E) (S, W) (S, E)

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. TEKS: Social Studies – 6.3 (B), Posing and answering questions about geographic distributions and patterns 6.22 (A), Using social studies terminology correctly 7.22 (A), 8.31 (A)

East West, North South on the Earth What would be the latitude and longitude directions in Australia? Remember: Latitude always comes first, then longitude ? Prime Meridian If you said South and East , you’re right!

What is our coordinate (latitude and longitude)? What would be the latitude and longitude directions for Kansas? Manhattan’s Coordinates are: 39°N, 96°W 90°N Y X 90°S

Battleship To practice using Latitude and Longitude we are going to play battleship! The battleship game uses a grid just like the one on a map You are going to place you five ships on your top grid Letters = Latitude Numbers= Longitude Your partner is going to guess coordinate to try and sink your ship The bottom grid can be used to keep track of the coordinates you have guessed You must say your coordinates correctly!!!! A North (lat), 2 West (long) G South (lat), 7 East (long) N D D L ATITUDE E W B B B B S LONGITUDE L ATITUDE LONGITUDE

Map Practice What cities are found at these coordinates? 1. 49⁰N, 2⁰ E 2. 19⁰ N, 99⁰ W 3. 39⁰ N, 77⁰ W

Answers…. 1. Paris, France 2. Mexico City, Mexico 3. Washington, D.C.