We have seasons due to the Earth revolving around the sun over the course of a year while tilted at an angle of 23.5 degrees. This gives us variations in sunlight and warmth over the year. Summer occurs from June to August in the Northern Hemisphere and December to February in the Southern Hemisphere. Winter is the coldest season, occurring between December to February in the Northern Hemisphere and June to August in the Southern Hemisphere. Autumn begins in September in the Northern Hemisphere, marked by falling leaves.

2. We have seasons because the
earth takes a year to move
round the sun, which gives us
light and warmth, and because
the earth tilts at an angle of
23.5 degrees.

3. SUMMER
the warmest season of the year, in the
northern hemisphere from June to
August and in the southern hemisphere
from December to February

4. WINTER
the coldest season of the year, in
the northern hemisphere from
December to February and in the
southern hemisphere from June to
August

5. Autumn in the Northern
Hemisphere begins in September.
It is at this season that leaves of
plants “fall”. People in the United
States generally call autumn by its
alternative name, fall, from “fall of
the leaf”
AUTUMN

6. SUN

7. EQUINOX – night and day
are nearly exactly the same
length. 12 hours all over the
world.

8. September 23 is autumnal equinox,
in Northern Hemisphere while
March 20 in the Southern
Hemisphere.