Seasons.

Seasons = A season is a period of time during the year.There are three seasons in one year :
                spring,summer and fall.

Seasons around the world = When it is summer in one part of the world,it could be winter in another!

How long is a seasons? = Each seasons is about three months long.The seasons change slowly,going from
                                        spring to summer to fall to winter,and back to spring again.

Spring = In some parts of the world,the weather gets warmer when spring arrives,helping to melt away       
             winter's snow and ice.

Summer = In some parts of the world,summer arrives in late June,and it's hot and sunny outdoors.The days grow even longer than the days in spring.In some places,it stays light outside all through the night!