Transcript How the seasons change

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Slide 1: Spring
Slide 2: Summer
Slide 3: Fall
Slide 4: Winter
Slide 5: How the seasons form
Slide 6: A Video
Slide 7: Where we got the websites
Slide 8: A hint Mann
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It is the first season.
The first day of spring is called vernal equinox
Despite the term, the day when there are 12 equal
hours of daylight and darkness usually happens before
the first day of spring.
The reason that there’s more daylight during spring is
that the earth’s axis tilts towards the sun at this time of
year.
Spring is when birds return home after migrating in
winter. About 1800 bird species migrate.
Pollen is the biggest spring allergen. Plants release this
powdery substance into the air to fertilize other plants.
France's Eiffel Tower grows by more than six inches in
summer due to the expansion of the iron on hot days.
 The first day of summer is known as the summer solstice
and in the US it falls on June 20 or June 21 each year,
depending on when the sun is furthest north of the
equator.
 Tornadoes and thunderstorms typically take place in
the summer as supposed to the spring. When it is
summer time in America it is winter time in the southern
hemisphere of the world.
 School summer vacations were invented by educator
Horace Mann in 1840.
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Evergreen trees remain green through the winter
because they have waxy leaves which do not freeze.
In Winter, days are shortest and the nights are longest.
Ice is a considered a mineral.
Wind chill can cause problems during the winter. Wind
chill is the combination of wind and temperature and is
based on the rate of heat loss from exposed skin.
During the winter months the current year ends and a
new year starts. The days are shorter and often very
cold. Sometimes the precipitation will fall as sleet and
snow, and quite often we wake up in the morning to
frost and ice on the floor. Winter is usually cold and wet,
however it does differ in other parts of the world.
http://www.youtube.com/watch?v=lmIF
XIXQQ_E
This is a link to the seasons changing in
action.
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http://weather-facts.com/seasonsfacts.php
 http://wdtn.com/2014/03/20/10-fun-factsabout-spring/
 http://www.9news.com/story/news/weird/2
014/06/20/9-fun-facts-aboutsummer/11101201/
 http://www.whyzz.com/fun-facts-for-fall
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