THE FOUR SEASONS

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THE FOUR SEASONS
SPRING
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• A SEASON is one of the four periods of the year.
  Each season--spring, summer, autumn, and
  winter--lasts about three months and brings
  changes in temperature, weather, and the length
  of daylight.
• During the spring, the days are warm in middle
  parts of the Northern Hemisphere, the northern
  half of the Earth. Summer follows with hot days
  and warm nights. In autumn, the days become
  cooler, leading to the cold of winter. The four
  periods are called climatic seasons when based on
  these temperature and weather changes.
• In the Southern Hemisphere, the climatic seasons
  differ by about six months. This hemisphere has
  summer when the Northern Hemisphere has winter.

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• SUMMER is the warmest season of the year.The
  Northern Hemisphere, the northern half of the
  Earth, has summer weather during late June, July,
  August, and early September. Summer like days
  sometimes occur in mid-autumn.In the Southern
  Hemisphere, summer lasts from late December until
  early March.The highest summer temperatures
  usually occur in the middle of a
  continent.During summer in North America, warm
  southern winds carry moisture north from the Gulf
  of Mexico to central and eastern North America.
  They can bring warm, humid weather to much of the
  region east of the Rocky Mountains and as far
  north as Canada. Thunderstorms often develop in
  and along the northern boundary of this warm,
  moist air. 

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• AUTUMN is the season between summer and winter.
• The Northern Hemisphere, the northern half of the
  Earth, has autumn weather during late September,
  October, and November. Autumn weather does not
  last so long in the polar region, where extremely
  cold winter weather begins earlier. In tropical
  regions, seasonal changes are not great.
• The Southern Hemisphere has autumn from March
  until early June.
• Many people call this season fall because it is
  the period of falling leaves. Autumn is also
  harvest time for many crops. In North America,
  early autumn days are generally warm and nights
  are cool. As winter approaches, the air becomes
  chillier and frost often occurs at night. In much
  of North America, the end of autumn is marked by
  the freezing of lakes and streams, southern
  migration of birds, and prewinter snowstorms.
• Autumn -- especially September -- is the season
  when most hurricanes occur. Hurricanes cause
  great damage along the coasts of the Gulf of
  Mexico and the western North Atlantic Ocean.

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• SPRING is the season between winter and summer.
• The Northern Hemisphere, which consists of the
  northern half of the Earth, has spring weather
  during late March, April, May, and early June.
• In the Southern Hemisphere, spring weather begins
  about September and ends by early December.
• Spring weather begins throughout much of North
  America with the melting of winter snow. In the
  polar regions, spring weather begins later and
  does not last as long as it does in the middle
  parts of the Northern and Southern Hemispheres.
• Tropical regions do not have great seasonal
  changes.
• The number of daylight hours increases during
  spring, and most spring days have higher
  temperatures than winter days. Nature awakens in
  spring, when flowers bloom and hibernating
  animals leave their winter sleeping places. In
  many countries, the people have festivals
  celebrating spring. 

SPRING
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• WINTER is the coldest season of the year.
• The Northern Hemisphere, the northern half of the
  Earth, has winter weather during December,
  January, February, and early March.
• In the Southern Hemisphere, winter weather begins
  in late June and lasts until early September.
• During winter, the polar regions are especially
  cold because the sun does not rise there for
  weeks or months at a time. The lowest winter
  temperatures usually occur in the middle of all
  continents.
• In the Northern Hemisphere, cold, dry air moves
  south from the North Pole, bringing cold weather.
  Storms move from west to east along the southern
  edge of the cold air. In the United States,
  winter storms produce large snowfalls in some
  areas. The most snow falls in the western
  mountains and in much of the northern region east
  of the Rocky Mountains. Many winter storms bring
  rain to warmer southern areas. 

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