Bill Nye: The Science Guy

Season 1 Episode 15

Earth's Seasons

Aired Unknown Dec 17, 1993 on Disney Channel
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Episode Summary

Earth's Seasons

It doesn't matter if it's spring, summer, winter, or fall - Bill Nye is always in season.
Every year, we experience the seasons. Some months have snow and rain, while other months have
warmth and sunshine. Temperatures go from cold, to woarm, to cold again � winter, spring, summer, and
fall. The cycle of the seasons takes one year, and the Earth takes one year to go around the sun.
Coincidence? No way.
The Earth's orbit around the Sun is flat, as though our planet were spinning over a tabletop. Compared
with flat plane of its orbit, the Earth is tilted. Its axis, the imaginary line between the North and South
Poles, is tipped over a bit. In June, the north half of the Earth (the Northern Hemisphere) is tilted toward
the Sun, and it's summertime in places like Nye Labs in the United States. Meanwhile, the south half (the
Southern Hemisphere) is tilted away from the Sun, and it's winter there, in places like Australia and South
The Earth's orbit isn't quite a perfect circle. It's like a circle that's been squeezed a little. It changes the
Earth's distance from the Sun. We're closest to the Sun in December, when it's summer in the Southern
Hemisphere. The tilt affects the seasons more than the slightly oblong orbit.
Neither rain, nor sleet, nor wind, nor snow can stop Bill Nye or the Earth's Seasons.


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