seasons and tilting f the earth

• Seasons


  Different periods of the year that are distinguished by special weather and climate conditions
• Seasons


  • Spring
  • Summer
  • Autumn
  • Winter
• Seasons


  • Different amount of light received from the sun
  • Different temperatures
  • Different weather conditions that repeat
• Axis


  An imaginary line passing through the center of the earth that goes through both the north pole and the south pole
• Rotation


  The spinning motion of earth around its axis
• Revolution


  The movement of the earth around the sun
• It takes 24 hours or one day for the earth to completely rotate around on its axis
• It takes 365 and 1/4 days or one year for the earth to move around the sun
• Tilt of the earth's axis


  • Tilted at an angle of 23.5 degrees
  • Reason behind the occurrence of seasons
• Solstice


  When the axis of the earth points forward or away from the sun
• The first day of summer is marked by the summer solstice which occurred during June 21 or June 22
• The first day of winter is marked by the winter solstice which occurred during December 21 or 22
• When the north pole is tilted toward the sun in June


  The northern hemisphere receives more direct rays from the sun and experiences longer daytime than nighttime
• When the south pole is tilted toward the sun in December


  The southern hemisphere receives more direct rays from the sun and experiences summer
• Equinox


  When the axis of the earth does not point either toward or away from the sun, resulting in equal day and night
• The first day of spring is marked by the vernal equinox which happens on March 21 or 22
• The first day of the autumn season is marked by the autumnal equinox which happens on September 21 or 22
• Wet and dry seasons

  The two main seasons experienced in the Philippines due to its location near the equator
• The rainy season in the Philippines is from June to November, and the dry season is from December to May
• The dry season in the Philippines can be subdivided into cold dry season and hot dry season
• Seasonal change is caused by the tilt of the earth's axis, the revolution of the earth around the sun, the direct rays of the sun, and the length of daytime