Why does the thermosphere have the highest temperature of all the atmosphere layears?

Answer 1

The thermosphere has the highest temperature of all atmospheric layers due to its absorption of high-energy solar radiation, particularly ultraviolet and X-ray radiation. This energy excites molecules and atoms, causing them to increase in kinetic energy, which translates to higher temperatures. Additionally, the thermosphere is less dense, meaning there are fewer particles to absorb and distribute heat, allowing temperatures to rise dramatically without a corresponding increase in thermal energy transfer.