**Today’s Current Affairs:** Discoveries and mysteries surrounding the solar corona are captivating the scientific world. From its incredible heat surpassing the photosphere to its expansive reach in the Earth’s atmosphere, the corona holds many secrets. Unravel the complexities of coronal heating, magnetic reconnection, and wave heating as scientists delve into understanding this enigmatic region. Explore the impact of the corona on space weather, satellite communications, and even terrestrial phenomena like the recent Aurora in Western countries. Stay tuned for more fascinating insights into the dynamic nature of our Sun and its influence on our universe.
### Question 1
– A. The corona is cooler than the photosphere.
– B. The corona is closer to the core than the photosphere.
– C. The corona is hotter than the photosphere.
– D. The corona is smaller than the photosphere.
Answer: C. The corona is hotter than the photosphere.
### Question 2
– A. Magnetic reconnection
– B. Wave heating
– C. Nuclear fusion
– D. Solar flares
Answer: A. Magnetic reconnection
### Question 3
– A. The corona is less dense than the photosphere.
– B. The corona is made up of solid particles.
– C. The corona is not affected by the sun’s gravitational pull.
– D. The corona is colder than the photosphere.
Answer: A. The corona is less dense than the photosphere.
### Question 4
– A. The corona affects space weather.
– B. The corona has no impact on Earth.
– C. The corona does not expand in the Earth’s atmosphere.
– D. The corona is always at a constant temperature.
Answer: A. The corona affects space weather.
Q: Why is the Corona hotter than the photosphere?
A: The high temperature of the solar corona compared to the photosphere, despite its greater distance from the core, is due to a phenomenon known as coronal heating. This heating process is still not fully understood, but theories suggest that magnetic reconnection and wave heating are key factors in raising the temperature of the corona.
Q: Why does the Corona expand to higher altitudes in the Earth’s atmosphere?
A: The corona’s expansion to higher altitudes in Earth’s atmosphere is a result of its high temperature and intense energy. These factors cause the corona to extend far beyond the photosphere, reaching heights of millions of kilometres. This expansion plays a crucial role in shaping the solar system’s space environment and influencing Earth’s magnetosphere and space weather.
Q: Why is the solar corona less dense despite being hot?
A: Despite its high temperature, the solar corona is less dense than the photosphere because it comprises extremely hot and ionized gas. The high temperature causes the gas particles in the corona to gain energy and move at high speeds, making them more prone to escaping the sun’s gravitational pull. This low density allows for the expansion of the corona’s outer layers into the solar wind, which carries charged particles and energy throughout the solar system.
Today's Current Affairs brings a fascinating discovery in the field of fluid dynamics - the solar corona is hotter than the photosphere, despite being farther from the core. Scientists attribute this discrepancy to a phenomenon called coronal heating, which remains poorly understood. The corona's hotness is believed to be influenced by processes like magnetic reconnection and wave heating. Furthermore, the corona's expansion to higher altitudes in Earth's atmosphere highlights its dynamic nature and impact on space weather. Despite its high temperature, the corona is less dense than the photosphere, allowing for the expansion of the solar wind and influencing our space environment. Stay tuned for more intriguing insights in the next blog! Take care! ❤️
