# Geographic Coordinates Longitude meridians Prime Meridian Latitude parallels

• Slides: 17

Geographic Coordinates Longitude (meridians) Prime Meridian Latitude (parallels) Equator

LONGITUDE

There are 180 degrees of longitude to the East, and 180 degrees of longitude to the west of the Prime Meridian

LATITUDE The Equator has 0 degrees of latitude Therefore latitude is measured in degrees North or South of the Equator How many degrees of latitude are the poles?

The Equator divides the Earth into two hemispheres Degrees of latitude are always relative to the Equator

Significant lines of Latitude What do you know about these lines of latitude? How does the sun’s energy affect these areas? What is the Earth’s angle of tilt away from the sun?

Arctic Sunlight http: //www. youtube. com/watch? v=ndl. QNic. Oeso http: //www. youtube. com/watch? v=2 IAK 57 y. UP 9 g

Coordinate Practice Find the coordinates of the following points: A: 0 degrees longitude, 23. 5 degrees S latitude B: 0 degrees longitude, 66. 5 degrees N latitude C: 85 degrees E longitude, 0 degrees latitude D: 85 degrees E longitude, 66. 5 degrees S latitude

Measurements Because lines of Latitude are parallel they can be used to determine distance 1 degree = 111 km on earth So if a ship is located at 30 S, how far is it from the Equator? Why is this measurement not accurate for degrees of longitude? We know that there are; How many degrees East or West of the Prime Meridian? How many degrees North or South of the Equator? Degrees are made up of minutes and seconds How many minutes in a degree? How many seconds in a minute?

Answers 1. Rio De Janeiro 2. Galapagos Islands, 3. Bogota (74 ° W, 4. 5 ° N). 1. Ireland/Dublin (7°W, 53°N) 2. Black Sea 3. Flinders Island (148°E, 40°S) 1. Amazon River 2. Madagascar (47. 5 ° E, 18. 5 ° S) 3. Tropic of Capricorn East to West over Aus. (Beginning: 23° 30’ S, 151°E) (End: 23° 30’ S, 113°E) 1. Borneo (110°E, 0°) 2. Cape York (142. 5°E, 11°S) 3. Perth (115. 5°E, 32°S)

Geographical Coordinates vs. Grid References

Geographical coordinates (Longitude and latitude) pinpoint exactly where you are in the world Grid References pinpoint exactly where you are on a specific map What might be the benefits of each? How do they differ in use?

Grid References Using the maps, pinpoint an exact spot using grid references.

Longitude and Latitude Measured in degrees, minutes and seconds Or may often be seen as a decimal 55. 5 ° = how many degrees and minutes? Go to page…

Latitudinal Geographic Zones Latitudinal geographic zones

Typical Climatic Zones