Relier Pairs Imaginary linesVersion en ligne Imaginary lines par Luz Álvarez Herrero 1 When we are measuring in degrees West or East we are measuring... 2 They go from the North Pole to the South Pole 3 The Earth takes 365 days and 6 hours to make this movement. It causes the seasons 4 It is the most important meridian. It is meridian 0º 5 It begins on 21 June in the Northern Hemisphere 6 It begins on 21 March in the Northern Hemisphere 7 It divides the Earth into two hemispheres 8 The Earth takes 24 hours to make this movement. It causes day and night 9 When we are measuring in degrees North or South we are measuring... 10 It begins on 21 June in the Southern Hemisphere LATITUDE Greenwich Meridian REVOLUTION Meridians LONGITUDE ROTATION SPRING WINTER EQUATOR SUMMER