Earth Science Lesson 1 Grade 7

• Earth


  Visually represented on a globe or a map
• Geographic coordinate system


  • Used to locate places on Earth
  • Locating and indicating points on Earth's surface
  • One number represents the vertical positions and the other represents the horizontal positions
  • Based on distance from a reference point
  • Measured in degrees
• Latitude


  • Angular distance north or south of the equator
  • Begins from the equator
  • Divides the Earth into two (north and south)
• Meridians


  • Imaginary vertical lines that run from north to south
  • Measure angle east and west of the prime meridian
• Longitude


  Angle east and west of the prime meridian
• Prime meridian


  Line running through Greenwich, England
• International Date Line


  Line exactly opposite the prime meridian and measures 180°
• Directions


  • North latitude
  • East longitudes
  • South latitude
  • West to east
  • North to south
• The Philippine Archipelago