Tilting the Earth…

Why We Have
Seasons

Interactive · One Tilt · Four Seasons

Time of year · —

Sun overhead at · Equator

— The reason for seasons —

A tilted world

Northern half—

Southern half—

✦ The big idea Seasons are not because Earth gets closer to the Sun. They happen because Earth is tilted, so each half leans toward the Sun for part of the year and away for the rest.

Time of year

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