Mon Prof Augmenté
Inside the Sun
Age 14 · Astronomy
The Sun is a huge glowing sphere made mostly of hydrogen and helium. It has no solid surface, and its energy comes from nuclear reactions in an extremely hot core.
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In the picture
- Outer glowing layer: hot gas with no solid surface
- Brilliant core: extremely hot center where energy is produced
- Swirling currents: hydrogen and helium gas moving in the outer layers
- Tiny Earth: size comparison for the Sun
Examples
- A campfire: the center is very hot and the outer flames are cooler.
- A hot-air balloon: gas is held together without a solid shell.
Key takeaways
- The Sun is made mostly of hydrogen and helium.
- Its energy is produced in the core, and it has no solid surface.
Quiz: Inside the Sun (Age 14)
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What are the two main gases that make up most of the Sun?
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Where is the Sun’s energy produced?
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Which statement about the Sun’s surface is correct?
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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