Page 223 - DK Children's Encyclopedia
P. 223

Seasons                                                                           SEE ALSO

                                                                                               ▸ ▸ Climate change
                                                                                                p.60

           In many parts of the world, the year has four seasons.                             ▸ ▸ Day and night  p.77
           These seasons are winter, spring, summer, and autumn.                              ▸ ▸ Hibernation  p.129
           The lives of plants and animals, the weather, and the hours                         ▸ ▸ Solar system

           of daylight all change from one season to the next. In some                          p.233
           hot parts of the world, there are just two seasons.                                 ▸ ▸ Trees  p.261
                                                                                               ▸ ▸ Weather  p.271



        Changing seasons
        In the cold winter, plants
        stop growing. In spring,
        they begin to grow again
        and baby animals are born.
        Summer sees the hottest
        weather, and then
        in autumn leaves
        change color and
        fall off the trees.
























                  Winter                      Spring                     Summer                      Autumn
       What causes                           March            December
       the seasons?                               This part of the Earth
       The Earth travels around                   tilts  away from the
       the sun. It is tilted so some              sun and has its winter.
       parts of it get stronger
       sunlight than other parts.                     Sun
       As it moves, the amount
       of sunlight reaching
       different parts of the                                                    Monsoons
       Earth changes. This                      This part of the Earth
                                                tilts toward the sun
       gives us our seasons.                    and has its summer.              Tropical parts of the Earth are warm
                                                                  September      all year round. There are often just
                                                                                 two seasons—a dry season and a
                        Axis                 June                                rainy season, called a monsoon.

                                                             221





   US_221_Seasons.indd   221                                                                                     16/05/2017   09:50
   218   219   220   221   222   223   224   225   226   227   228