SCIENCE

• 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
• The earth's axis is tilted at an angle of 23.5 degrees
• The tilt of the earth's axis


  The reason behind the occurrence of seasons
• The hemisphere that receives more solar rays

  Experiences warmer temperature
• The hemisphere that receives lesser solar rays

  Experiences cooler temperature
• 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 duration of days and nights
• 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 major 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
• The seasonal changes in the Philippines are due to 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