Mon Prof Augmenté
Inside the Sun
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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Age 14: open this week
Browse Age 14
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.
Carry on in the app
Three questions on this lesson. It has left the free week, so its quiz is for subscribers.
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