1. The Four Seasons

2. The Four Seasons
Is the changing seasons caused by the change in the distance between the Sun and the Earth?
No. If it is, then
The northern and southern hemisphere should have the same season, not opposite season like we have.
We should experience real seasonal changes in Hawaii also. …

3. The Four Seasons: The Effect of the Tilt of the Earth’s Rotation Axis

4. The Four Seasons: The Effect of the Tilt of the Earth’s Rotation Axis

6. Solstices and Equinoxes
Equinox: An equinox is one of two points on the celestial sphere where the celestial equator and ecliptic intersect.
Solstice: A solstice is either of the two times of the year when the sun is at its greatest distance from the equator.
Ecliptic Plane
Spring Equinox
Winter Solstice
Celestial Equator
Fall Equinox
Fall Solstice

7. An equinox is also the time or date at which the sun crosses the celestial equator, when day and night are of equal length. 
Spring Equinox ~ March 21*
Summer Solstice ~ June 21*
Fall Equinox ~ September 22*
Winter Solstice ~ December 21*
*These dates are approximate