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A sunspot is an area on the Sun's surface (the photosphere) that is affected by intense magnetic activity, which inhibits convection, thus reducing the surface temperature in that region. Even though sunspots are still very bright and hot they appear darker because they are cooler than the surrounding area. The normal temperature of the photosphere is about 5,800 kelvin, whereas the temperature of a sunspot is roughly 4,000 - 4,500 kelvin, which leaves them clearly visible (through filters) as dark spots. The average sunspot is about the size of the Earth! However, sunspots come in a variety of sizes ranging from hundreds to tens of thousands of miles across (many times larger than Earth). Scientists measure the total size (area) of all of the sunspots seen on the sun every day to get a measure of how active the sun is. Sunspots are not permanent. They appear and disappear on the surface of the sun in regular cycles that average about 11 years.
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What is the center portion of a sunspot called?
The center portion of a sunspot is called the umbra. It is the darkest part of the sunspot where the magnetic field is strongest and the temperature is cooler than the surrounding areas.
What is the famous part of Jupiter?
the sunspot
Is the shape of a sunspot cycle wavy?
Yes, the shape of a sunspot cycle can be described as somewhat wavy. Sunspot activity follows an approximately 11-year cycle with peaks and valleys in sunspot numbers over time, reflecting the Sun's magnetic activity. This cycle is not perfectly regular due to various factors influencing the Sun's behavior.
What is outer portion of a sunspot called?
umbra
What did Walter maunder discover about sunspot activity in 1893?
came across the surprising fact that between 1645 and 1715 there was virtually no sunspot activity at all.
What is the largest sunspot?
Prominence Sunspot in 1945
What are sunspot maximums and sunspot minimums?
Sunspot maximum and sunspot minimum are the points in time (roughly 6 years apart) when the sun is producing the most, or the least sunspots. In the past this has been measured both by sunspot area and sunspot count and is directly tied to the solar magnetic cycle.
How many years is the sunspot cycle?
The sunspot cycle is about 11 years in length.
How big is a large sunspot?
A Large Sunspot can be up to about 10,000 miles across.
What is the average sunspot cycle in years?
The average sunspot cycle is approximately 11 years, with periods of high sunspot activity followed by lower activity levels. This cycle is known as the solar cycle or the sunspot cycle.
What is a cooler area on the sun's surface?
An area on the sun that is cooler is called a sunspot.
Can you direct me to a picture of a sunspot?
No
Are you in the high middle or low part of the sunspot cycle?
The Sun is rising close to its high, or peak sunspot cycle.
What was the sunspot classification on July 14 2007?
On July 14, 2007, the Sunspot number was 38. This was late in Solar Cycle 23. You can see the daily sunspot number and interesting astronomical phenomena at spaceweather.com.
What is the center portion of a sunspot called?
The center portion of a sunspot is called the umbra. It is the darkest part of the sunspot where the magnetic field is strongest and the temperature is cooler than the surrounding areas.
What is the darkened area of a sunspot called?
The darkened area of a sunspot is called the umbra. It is the central region of a sunspot where the magnetic field is strongest, causing the area to appear darker compared to the surrounding photosphere of the Sun.
How do you use the word sunspot in a sentence?
You should never look directly at the Sun to try to see a sunspot, as they are not as dark as they look in photographs. The magnetic disturbance that causes a sunspot will seldom occur in the same location twice.
