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Explore Earth's elliptical orbit and its revolution around the sun. Discover how the planet moves through Aphelion and Perihelion, creating the changing seasons of Spring, Summer, Fall, and Winter. Learn about the Vernal and Autumnal Equinoxes and witness the evidence of Earth's movement in the parallax effect.
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Revolution Earth’s movement or orbit around the sun Takes 365 days or 1 year to make one complete revolution 4.3 – Earth’s Revolution
Elliptical Earth’s orbit is elliptical (oval shaped) Earth is closer to the sun at certain points of it’s orbit
Aphelion Perihelion Earth is farthest from sun in its orbit Earth is closest to the sun in its orbit
Parallax Evidence the Earth is revolving around the sun Stars seem to change position throughout the course of the year – look closer or father away ACTUALLY!! Earth is moving – not the star
Seasons Spring Summer Fall Winter
Summer Solstice June 21 First day of summer
Winter Solstice Dec 21 First day of Winter
Vernal Equinox Autumnal Equinox Mar 21 – 1st day of Spring Sept 21 – first day of fall