Informative Speech On Sunspots

We are going to start a study of sunspot today. And I think you will find it interesting. Now I am going to assume that you know that sunspots, in the most basic terms, are the dark spots on the Sun's surface. That ' Ll do for now. The ancient Chinese were the first to record observations of sunspots as the early as the year 165. When later European astronomers wrote about sunspots, they did not believe that the spots were put on the Sun. That's for their Belief at the time that the heavenly bodies, the Sun, Moon, Stars and Planets were perfect, without any flaws or blemishes. So the thought was the spots were actually something else, like shadows of planets crossing the Sun's face. And that was thought of European astronomers until the introduction …show more content…
If they were shadows of the planets, they would be circular, right? So that was a problem for the prevailing view. And he also noticed that the shape of the sunspots changed as they presented to move Across the Sun's surface. Maybe a real sunspot was sort of square, then later it would become more lopsided, then later something else. So there's another problem with the shadow hypothesis. Because the shape of a planet does not change. Sunspots Galileo Proposed WAS that the What were the Feature of all jobs. Indeed A at The Sun, But the What kind of He DID not know of the Feature. Of He Proposed that They Might BE Clouds in at The Atmosphere, at The Solar Atmosphere. ESPECIALLY Because They seemed to Change the Shape, and there Was no no predicting the changes. At least nothing Galileo could figure out, that random shape changing would be consistent with the spots being clouds. Over the next couple hundreds years, a lot of hypotheses were tossed around, the spots were mountains or holes in the Solar atmosphere through which the dark surface of the Sun could be seen. Then in 1843, an astronomer named Heinrich Schwabe made an interesting …show more content…
And of He Started to keeping Tracks of Sunspots, Mapping Them, SO of He Would Not Confuse Them with the any potential new new Planet. The In The End there was no planet. But there was an evidence that the number of sunspots increased and decreased in a pattern. A pattern that repeated repeating after 10 years, and that was a huge breakthrough. Another astronomer named Wolf kept track of the Sun for An even longer period, 40 years actually. So Wolf did 40 years of research, and Schwabe did 17 years of research, I think there is a lesson here. Anyway, Wolf went through all records from various observatories in Europe, and put together a history of sunspot observations going back about 100 years. From this information, he was able to confirm the existence of a pattern, a repeating cycle. But Wolf detected an 11 years cycle not a 10 years cycle. 11 years cycles? Does that sound familiar to anyone? No? Well, geomact activity, the nature variations in Earth's magnetic field, it fluctuates in a 11 year cycles. Well, we'll cover this Later in this semester. But for heard of the sunspots' cycle was also 11 years, well, they just had to find out what was going