Written by the Fiveable Content Team • Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 exam•Written by the Fiveable Content Team • Last updated August 2025
Definition
The 23.5-degree angle of Earth's rotational axis relative to its orbital plane around the Sun, which causes differential solar energy receipt between hemispheres and creates seasons.
AP course connection
Topic 4.7: 4.7 Solar Radiation and Earth's Seasons