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What is true of the layers of a star?

A. The inner layers are very cool, and the outer layers are somewhat cool.
B. The outer layers are very hot, and the inner layers are somewhat cooler.
C. The inner layers are very hot, and the outer layers are somewhat cooler.
D. The outer layers are very hot, and the inner layers are somewhat hot.

Answer :

Final answer:

The inner layers of a star are very hot due to nuclear fusion, while the outer layers are somewhat cooler. The temperature generally decreases from the core outward. Thus, option c is the correct choice regarding the temperature of the layers.


Explanation:

Understanding Star Layers


Stars are composed of various layers, each with distinct characteristics regarding temperature. The correct statement regarding the temperature of a star's layers is:



  2. Option c: The inner layers are very hot, the outer layers are somewhat cooler.


The core of a star is extremely hot, primarily due to nuclear fusion occurring within it, where hydrogen is converted into helium. This process generates immense energy, resulting in high temperatures that can reach millions of degrees Celsius. As we move outward through the layers, such as the radiative and convective zones, the temperature gradually decreases. Finally, the outermost layer, known as the atmosphere or corona, can become hot again due to various processes, but overall, the temperature typically decreases from the core to the surface.


For example, in our Sun:



  • The core can reach temperatures around 15 million degrees Celsius.

  • The surface temperature (photosphere) is approximately 5,500 degrees Celsius.

  • The outer atmosphere (corona) can soar to about 1 to 3 million degrees Celsius in some areas, although it is less hot than the core.


This temperature gradient is essential to understanding stellar structure and behavior. Thus, the answer to the question is that the inner layers are very hot, while the outer layers are somewhat cooler, making option c the correct one.


Learn more about star layers here:

https://brainly.com/question/12398180


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