1. Solving Seasons Notes
TEKS 8.7A model and illustrate how the tilted Earth rotates on its axis, causing day and night, and revolves around the Sun causing changes in seasons

2. Reasons for the Seasons…
The 23.4°tilt of the Earth on its axis.

3. Reasons for the Seasons…
The hemisphere tilted toward the Sun receives more direct radiation. This season is summer.

4. Reasons for the Seasons…
c. The hemisphere tilted away from the Sun receives less radiant energy. This season is winter.

5. Solstice Summer Solstice: June 21, 22
The Sun reaches its highest point in the sky.
The length of daylight hours are the longest.

6. Solstice Winter Solstice: December 21, 22
The Sun reaches its lowest point in the sky.
The length of daylight hours are the shortest.

7. Equinox
Earth is not tilted toward or away from the Sun. Each hemisphere receives similar amounts of radiant energy.
The length of daylight and nighttime hours are equal.

8. Spring Equinox: March 21-23 Fall Equinox: September 21-23