Mon Prof Augmenté
Warm Sand Nest
Age 12 · Biology
A buried clutch of eggs rests in a flask-shaped chamber under the sand. The sand near the middle is warmer than the sand near the outer edge.
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Every lesson is open to everyone for 7 days after it is published. This one came out on September 13, 2026: its text stays readable here, and its picture opens with a subscription.
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In the picture
- Central lower egg
- Outer upper egg
- Middle thermometer
- Rim thermometer
Examples
- A sea turtle nest on a beach
- A sun-warmed sand pit
Key takeaways
- Sand temperature can decide whether an egg becomes male or female.
- Eggs near the middle of a nest are warmer than eggs at the edge.
Quiz: Warm Sand Nest (Age 12)
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In a buried clutch, what decides whether an egg develops as male or female?
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Why can two eggs in the same buried clutch develop as different sexes?
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In a buried clutch, which eggs receive more warmth?
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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