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Montana State University: Spring and Fall Equinox
This Montana State University site provides a simple chart on the spring and fall equinox and a description of the process.
American Association of Physics Teachers
Com Padre Digital Library: Open Source Physics: Equinox Precession Model
Experience a science simulation illustrating the Copernican theory of Earth's orbit around the sun.
Other
Autumnal Equinox From the Electronic Sky
This site, written by an amateur astronomer with 30 years of study and interest, explains the equinox with photos and charts.
Other
Electric Sky: Vernal Equinox
This site, created by an amateur who has studied astronomy for thirty years, provides a scholarly explanation of the vernal equinox. Links to definitions of significant terms.
Other
Lunar and Planetary Institute: Sky Tellers: Myths, Magic, Mysteries of Universe
Very nice website with excellent graphics depicting the change of the seasons and how the seasons are different between the northern and southern hemisphere. Also has a nice informational table of the spring and fall equinox and summer...
Curated OER
Montana State University: Spring and Fall Equinox
This Montana State University site provides a simple chart on the spring and fall equinox and a description of the process.
Environmental Education for Kids
Eek!: Seasonal Observations: Fall
Fall begins with the autumnal equinox, usually around September 22 or 23. The equinox is the time of the year when we have equal length of night and day.
Oklahoma Mesonet
Oklahoma Climatological Survey: The Seasons
Find out what the seasons are and how they change. Through the use of excellent graphics, content explores the Earth's orbit around the sun and how sunlight reaches the earth at equinox and the winter solstice.
Environmental Education for Kids
Eek!: Seasonal Observations: Summer
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.
Fundación Cientec
Cientec: Equinoccios Y Solsticios
Read about equinoxes and solstices. You will also find a table with date and time of the future equinoxes and solstices in the coming years.
Instituto Latinoamericano de la Comunicacion Educativa
Red Escolar: Ensalada De Solsticios Y Equinocios
In Spanish. This is a quick visual introduction about the autumn equinox and summer solstice.
ClassFlow
Class Flow: Earth and Space the Seasons
[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.
Curated OER
Relative Galactic Position of Orion
This site, created by an amateur who has studied astronomy for thirty years, provides a scholarly explanation of the vernal equinox. Links to definitions of significant terms.
Curated OER
Location of the First Point of Aries
This site, created by an amateur who has studied astronomy for thirty years, provides a scholarly explanation of the vernal equinox. Links to definitions of significant terms.
Curated OER
Image of Epsilon Arietis
This site, created by an amateur who has studied astronomy for thirty years, provides a scholarly explanation of the vernal equinox. Links to definitions of significant terms.
Other
Earth Sky: Everything You Need to Know: December Solstice 2014
Winter solstice, earliest sunset, latest sunrise. It seems that, in the Northern Hemisphere anyway, these three events should happen on the same day. Read this explanation of the changing of the seasons and learn why the winter solstice...
Exploratorium
Exploratorium:seasons/shadows: Investigate How Shadows Shift Throughout the Year
Ancient Chacoans used shadows to tell daily time and seasons. Build a model that demonstrates the changes in Earth's tilt that affect the length of shadows relative to the sun that determines the seasons. The lesson plan uses everyday...
University of California
Cse: What's Your Sign? The Science Behind the Zodiac
This paper presents the explanation behind the Zodiac signs. It discusses motions of celestial objects, the Plane of the Ecliptic, and the constellations of the Zodiac.
Georgia Department of Education
Ga Virtual Learning: Astronomy: The Earth
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.
Texas A&M University
Ocean World: Bringing the Ocean to the Classroom
Online resource for students and teachers to see information on icebergs, fisheries, coral reefs, waves, currents and more. Provides teachers with learning activities. Has its own ask-an-expert site (Ask Dr. Bob), and provides real-time...
Teachnology
Teachnology: Fall (Autumn) Season Teaching Theme
Be equipped with these resources to enhance classroom teaching about the fall season. Teachnology offers worksheets, lesson plans, and more.
Wikimedia
Wikipedia: Autumn
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...
NASA
Nasa Star Child: A Song for All Seasons
After listening to excerpts from four of the violin concertos from "The Four Seasons" by Italian composer and violinist, Antonio Vivaldi, decide which excerpt was meant to go with which season, and also decide where the earth would be in...
University of St. Andrews (UK)
University of St. Andrews: Claudius Ptolemy
This site, which is provided for by the University of St. Andrews, contains biological information as well as the works of Ptolemy.
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