A brief explanation of the Earth's rotation around the Sun and how it relates to the amount of sunlight the Earth receives, and to the seasons. Includes two questions for students to respond to.

The shortest day of the year, or the winter solstice, marks the beginning of this season usually occurs around December 21. Bundle up because winter is a fantastic time to track animals and explore the outdoors!

While many of us consider it summer once school is released, this season technically begins with the summer solstice - the longest day of the year - on June 21 and continues until the fall equinox in September.

[Free Registration/Login Required] This flipchart explores the relationship between the sun and earth and how the seasons happen. Vocabulary of the equinox, solstice, etc. is included.

This site, which is provided for by the University of St. Andrews, contains biological information as well as the works of Ptolemy.

In this interactive tutorial students will learn what causes the seasons, diurnal cycles and how the constellations move through the sky. Learn we are able to see other planets and how astronomical events affected life on the Earth.

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...

This site from the encyclopedia Wikipedia describes both the Autumn, or Fall, season as well as the reason for the season. Links are provided to information about the equinox and solstice associated with the season as well as a link to...