❓ why
Why does Earth have seasons?
Quick Answer
Earth has seasons because its axis is tilted by about 23.5 degrees as it orbits the Sun. That tilt changes the angle and duration of sunlight through the year.
The Full Story
Seasons are not caused by Earth being much closer to or farther from the Sun; they come mainly from axial tilt. When the Northern Hemisphere tilts toward the Sun, it gets longer days and more direct sunlight, producing summer there and winter in the Southern Hemisphere. Six months later, the situation reverses. The 23.5-degree tilt also explains why the equinoxes and solstices occur at predictable times each year.
Key Facts
1.Earth’s axis is tilted about 23.5°
2.Seasons are caused mainly by axial tilt, not distance from the Sun
3.Solstices and equinoxes mark key points in the yearly cycle
YouTube Angle
Suggested video title for this topic:
"Why does a tilted planet have seasons?"
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