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Become a nitrogen atom in the nitrogen cycle in our Traveling Nitrogen Classroom Activity Kit/Game. See all our games, activity kits and classroom activities.
The landscape and weather change greatly during the year in regions that have four distinct seasons.
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The Four Seasons

It takes the Earth one year to travel around the sun one time. During this year, there are four seasons: summer, autumn, winter, and spring. Each season depends on the amount of sunlight reaching the surface and the Earth's tilt as it revolves around the sun.

When it is summer in the northern hemisphere, it is winter in the southern hemisphere. At the equator, there are no seasons because the sun is always striking there.


Last modified June 26, 2008 by Vanessa Pearce.

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The Fall 2009 issue of The Earth Scientist, which includes articles on student research into building design for earthquakes and a classroom lab on the composition of the Earth’s ancient atmosphere, is available in our online store.

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