Latitude and Longitude LEARNING GOAL: I will be able to use latitude and longitude to identify places on a world map.

Talk with the person sitting next to you Talk with the person sitting next to you. Can you identify the correct location for the given points on this Coordinate Plane? POINT A: (2, 7) POINT B: (-4, 6) POINT D: (-3, -3) POINT E: (0, 2) POINT F: (7, -5) Each point has a specific location on this grid, identified by using the X Axis and the Y Axis. WHY ARE WE EVEN DOING THIS??? THIS IS HISTORY CLASS!!!!

The same idea as locating a point on a Coordinate Plane is used with locating specific location on a world map. Most maps contain specific lines that form a grid. This grid can be used to accurately identify any place on Earth.

Understanding Latitude and Longitude Lines of latitude and lines longitude cross one another. They form an imaginary grid system around the earth. Just like your grid maps that you created of your room at home, lines on globes and maps provide information that can help you easily locate places on the earth too. http://www.navfltsm.addr.com/globe.jpg

Latitude Lines of latitude are also called parallels. They circle the earth parallel to the Equator. They measure north and south of equator in degrees. The Equator is at 0° latitude. The North Pole is at 90°N (north). Maps101.com ESTIMATE: What line of latitude do you think runs through this point on the map?

Longitude Lines of longitude are also called meridians. They circle the earth from Pole to Pole. They measure east and west of the starting line, at 0° longitude or the Prime Meridian. Talk to the person sitting next to you. Why are the very western and very eastern longitude lines say 90 degrees? Maps101.com

Absolute Location Only one place can be found at the point where lines cross one another. Use degrees (°) to give an exact spot where one line of latitude crosses one line of longitude – an absolute location. You use ordered pairs of numbers (Latitude, Longitude) to identify the absolute location. The grid system formed by lines of latitude and longitude makes it easy to find the absolute location of any place in the world. http://www.navfltsm.addr.com/globe.jpg

What continent would be located at the following point? (20os, 600w) Step 1: Put a finger on the line of Latitude that is (20os) Step 2: Put a finger on the line of Longitude that is (600w) Step 3: Follow both lines until they meet. Step 4: Identify the continent. SOUTH AMERICA When writing the coordinates, write using the same order. (Latitude, Longitude) What would be the latitude and longitude coordinates for the following location? (20on, 100ow)

Hemispheres The equator circles the middle of the Earth. It divides the earth into hemispheres or “half-spheres.” North of the equator is the Northern Hemisphere. South of the equator is the Southern Hemisphere.

Maps101.com

Hemispheres The Prime Meridian runs from north to south. It divides the earth into half spheres in the other direction. East of the Prime Meridian for 180 degrees is the Eastern Hemisphere. West of the Prime Meridian for 180 degrees is the Western Hemisphere.

Maps101.com

LET’S PRACTICE!! Place a dot on the following coordinate: (600n, 1400w) What continent? NORTH AMERICA What hemisphere? (Give two answers) NORTH AND WEST Notice anything with those last answers? The latitude and longitude coordinates tell you which hemisphere’s a place is located.

What hemisphere is this located in? South and West What would the latitude and longitude coordinate be for the center of the point below? NOT EVERY (LATITUDE, LONGITUDE) COORDINATE WILL BE WHERE TWO LINES INTERSECT. (100s, 100w) What hemisphere is this located in? South and West

MORE PRACTICE: Discuss the following with your partner. True or False The latitude and longitude coordinate (300s, 160oe) runs through Australia. FALSE….BUT IT’S REALLY, REALLY CLOSE The coordinates for the black dot is at (00, 40oe). TRUE…Why is there not a N or S next to the zero degrees? This point is on the equator. It is neither north or south.

PRACTICE WITH YOUR PARTNER PRACTICE WITH YOUR PARTNER. You will each be using the large placemat maps for this. PART 1: For each U.S city listed below, write the approximate (Latitude, Longitude) coordinates. Try to be within 4-5 degrees for each) PHILADELPHIA, PA RENO, NV HOUSTON, TX MIAMI, FL PHOENIX, AZ PART 1 ANSWERS (400N,750W) (390N, 1190W) (290N, 950W) (250N, 800W) (330N, 1120W) PART 2: Find the closest world city for each coordinate. (190N, 990W) (420N, 880W) (230S, 430W) (340S, 180E) (390N, 1160E) PART 2 ANSWERS Mexico City, Mexico Chicago, USA Rio De Janeiro, Brazil Cape Town, South Africa BEIJING, China