Source www slideshare net understandinglongitudeandlatitudepresentation Typical Graph h
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Typical Graph h. This is an example of a typical graph we are all familiar with. h. The graph is made up of different “points” with lines that connect the points.
Typical Graph h. Each point has two values: h. The “X” value that runs along the horizontal “X” axis Y axis X axis h. The “Y” value that runs along the vertical “Y” axis
Typical Graph Y (3, 8) (9, 5) h. X value is always stated first h. Followed by the Y value h. The “origin” is the point where the 2 axes intersect with a X value of (0, 0)
h. A point can also have negative (-) values Typical Graph Y (-X, +Y) (+X, +Y) (0, 0) X (-X, -Y) (+X, -Y) h. Negative X values are to the left of the origin (0, 0) h. Negative Y values are below the origin
East West, North South on The Earth Y h. Let the X axis be the Equator. h. Let the Y axis be the Prime Meridian that runs through X Greenwich outside of London. h. Lat/Long are the 2 grid points by which you can locate any point on earth.
East West, North South on the Earth N W E S h. Let each of the four quarters then be designated by North or South and East or West.
East West, North South on the Earth (N, W) (S, W) (N, E) (S, E) h. The N tells us we’re north of the Equator. The S tells us we’re south of the Equator. h. The E tells us that we’re east of the Prime Meridian. The W tells us that we’re west of the Prime Meridian.
East West, North South on the Earth (N, W) Prime Meridian h. That means all points in North America will have a North latitude and a West longitude because it is North of the Equator and West of the Prime Meridian.
East West, North South on the Earth Prime Meridian ? h. What would be the latitude and longitude directions in Australia? If you said South and East , you’re right!
h. Latitude is the What is Latitude? distance from the equator along the Y axis. 90°N Y X h. All points along the equator have a value of 0 degrees latitude. h. North pole = 90°N h. South pole = 90°S h. Values are expressed in terms of degrees.
What is Latitude? 90°N Y X 90°S h. Each degree of latitude is divided into 60 minutes. h. Each minute is divided into 60 seconds. This is also true of longitude.
What is Latitude? 90°N h. For Example: Y h 37°, 02’, 51’’N X 90°S h. This is close to the latitude where you live.
What is Longitude? h. Longitude is the distance from the prime meridian along the X axis. Y h. All points along the prime meridian have a X value of 0 degrees longitude. 180°W 180°E h. The earth is divided into two parts, or hemispheres, of east and west longitude.
What is Longitude? h. The earth is divided into 360 equal slices (meridians) Y X 180°W 180°E h 180 west and 180 east of the prime meridian
What is Latitude? 90°N h. Our latitude and longitude might be: Y X h 37°, 03’, 13’’N h 76°, 29’, 45’’W 90°S
So Where is (0, 0)? h. The origin point (0, 0) is where the equator intersects the prime meridian. h(0, 0) is off the western coast of Africa in the Atlantic Ocean.
See If You Can Tell In Which Quarter These Lon/Lats Are Located h 1. 41°N, 21°E A B C D h 2. 37°N, 76°W h 3. 72°S, 141°W h 4. 7°S, 23°W h 5. 15°N, 29°E h 6. 34°S, 151°E
h 1. B h 2. A h 3. C h 4. C h 5. B h 6. D
h. See if you can find those same latitude/longitude locations on a map!
Positioning on the Earth’s Surface East is the direction of rotation of the Earth North Pole Prime Meridian Latitude: (90 o. N to 90 o. S) Longitude: (180 o. E to 180 o. W) 0 o Longitude Tropic of Cancer 21 st June 22 nd Sept 20 th March Equator 22 nd December Tropic of Capricorn Longitude 90 o West Longitude 60 o West Longitude 30 o West Latitude 23½o North o. E 90 60 o 90 30 30 60 90 Wo o 66½ 23½ o 900 23½o Latitude 0 o Latitude 23½o South Longitude 90 o. East Longitude 60 o East Longitude 30 o East South Pole Latitude and Longitude together enable the fixing of position on the Earth’s surface.
Now you’re ready to find some locations on a map!
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