Final Answer:
The Earth’s tilt and its revolution around the Sun cause the seasons. As Earth orbits the Sun, different parts of the planet receive varying amounts of sunlight due to the fixed 23.5° tilt of its axis. When the Northern Hemisphere tilts toward the Sun, it experiences summer (hot), and the Southern Hemisphere tilts away, experiencing winter (cold). Six months later, the situation reverses. Spring and fall occur when neither hemisphere is tilted strongly toward or away—sunlight is more evenly distributed, leading to warmer or cooler (but not extreme) temperatures. Rotation causes day and night, but *revolution* (orbiting the Sun) combined with axial tilt causes the seasons.
Parent Tip: Review the logic above to help your child master the concept of rotation revolution worksheet.