Latitudes and Longitudes

• A grid is a series of intersecting or crossing lines used for locating places on a map or a globe.
• on a spherical globe it would not be possible to indicate the exact point from which we could begin marking the lines of the grid, as it would lack a precise starting point.
• One series of lines is drawn from the north pole to the south pole called meridians of longitude.
• One series of lines drawn parallel to the equator are called parallels of latitude.
• The network of meridians and parallels is called Earth grid and their intersection enables us to locate any point on the Earth with precision.
• Meridians and parallels are measured in angles and not in linear units.
• The network of parallels of latitudes and longitudes drawn on a globe or a map is called the geographical grid.
• Latitudes are east to west.
• Longitudes are north to south.
• Parallels and meridians intersect each other at right angles.
• The International Date Line roughly follows the 180-degree meridian.
• A line of latitude is an imaginary line which joins all places having the same angular distance north or south of the equator.
• the torrid zone lies between the tropic of cancer 23.5N and Tropic of capricorn 23.5S.