GeneralAnswersv1

Why does Earth have seasons?

Axial tilt changes sunlight angle and day length through the orbit.

Output

Opposite seasonal cycles in the northern and southern hemispheres

Input

Earth orbiting the Sun with its axis tilted about 23.5 degrees

Input

Earth orbiting the Sun with its axis tilted about 23.5 degrees

Opposite seasonal cycles in the northern and southern hemispheres

Relationship

Each hemisphere alternately tilts toward and away from the Sun, changing both solar intensity and hours of daylight.

spaceplace.nasa.gov: Why does Earth have seasons?spaceplace.nasa.govUS-PUBLIC-DOMAIN