SCIENCE 1st

• MOVEMENTS OF THE HEAVENLY BODIES OF ROTATION :

  • spinning on its axis ; REVOLUTION
  • movement around a star or other bodies
• SEASONS ;

  • a period of year that is distinguished by special climate conditions
• FACTORS AFFECTING SEASONS;

  • tilt of the earth
  • revolution of the earth
  • direct rays of sunlight
  • length of daytime
• TILT OF THE EARTH;

  • earth is tilted 23.5 degrees
  • makes 1 hemisphere more directed to the sun

  
• REVOLUTION OF THE EARTH :

  • uneven exposure of the earth's surface to solar energy
  • hemisphere tilted away from the sun - less solar energy, colder season
• DIFFERENT RAYS OF THE SUN ;

  • earth's surface that is exposed to direct rays absorbs more solar energy
• LENGTH OF DAYTIME :

  • longer daytime exposes the earth's surface longer, thus absorbing greater solar energy

  (vice versa)