Mon Prof Augmenté
Earth’s Tilt and Seasons
Age 12 · Astronomy
Earth spins on an axis tilted 23.4 degrees. As Earth orbits the Sun, the hemisphere tilted toward the Sun gets summer and longer days, while the other hemisphere gets winter.
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In the picture
- The Sun: the glowing star whose light falls on the facing hemisphere.
- Earth’s axis: the slanted line through the poles.
- Northern hemisphere leaning toward the Sun: the brightly lit half.
- Orbital path: the oval route Earth takes around the Sun.
- Southern hemisphere leaning toward the Sun: the brightly lit half.
Examples
- A July day in New York has more daylight than a December day.
- In Sydney, Christmas falls during summer and the days are long.
Key takeaways
- Earth’s 23.4-degree axial tilt is the main cause of the seasons.
- The hemisphere tilted toward the Sun has summer and longer days.
Quiz: Earth’s Tilt and Seasons (Age 12)
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What is the main cause of the seasons on Earth?
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When a hemisphere is tilted toward the Sun, what does it get?
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When the Northern Hemisphere leans toward the Sun, what does the Southern Hemisphere get?
The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.
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