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Sunspots are caused by disturbances in the Sun's magnetic field welling up to the photosphere, the Sun's visible "surface". The powerful magnetic fields in the vicinity of sunspots produce active regions on the Sun, which in turn frequently spawn disturbances such as solar flares and coronal mass ejections (CMEs).
- How are sunspots formed kids?
- Where do sunspots occur on the Sun?
- Are sunspots hot or cold?
- Why do sunspots appear?
- How many sunspots are on the Sun?
- What are sunspots on the Sun?
- Can sunspots be red?
- Does the Sun rotate?
- Can you see sunspots from Earth?
- Does the sun have Corona?
- Whats the definition of sunspots?
- What is the sunspot number?
- Who was the first to observe sunspots?
- Who discovered sunspots?
How are sunspots formed kids?
Sunspots are dark areas that appear on the surface of the Sun. They are caused by strong magnetic activity within the Sun. Sunspots are not permanent and they can move slowly across the surface of Sun changing size as they move. The appearance of sunspots follows the solar cycle of eleven years.
Where do sunspots occur on the Sun?
Surprisingly, almost all sunspots are found in two bands on the Sun, just north and south of the equator. At the start of the cycle, the sunspots appear at latitudes of about 30 degrees, both north and south of the equator.
Are sunspots hot or cold?
Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun's surface. The temperature of a sunspot is still very hot though—around 6,500 degrees Fahrenheit!
Why do sunspots appear?
They are caused by interactions with the Sun's magnetic field which are not fully understood. ... Sunspots occur over regions of intense magnetic activity, and when that energy is released, solar flares and big storms called coronal mass ejections erupt from sunspots.
How many sunspots are on the Sun?
At Solar Maximum, there will be up to 200 sunspots on the Sun at one time.
What are sunspots on the Sun?
Sunspots are areas where the magnetic field is about 2,500 times stronger than Earth's, much higher than anywhere else on the Sun. Because of the strong magnetic field, the magnetic pressure increases while the surrounding atmospheric pressure decreases.
Can sunspots be red?
People often mistake sunspots for age spots. Age spots are the brown marks people over the age of 45 often see on their skin; sunspots are red and feel scaly to the touch.
Does the Sun rotate?
The Sun rotates on its axis once in about 27 days. ... Since the Sun is a ball of gas/plasma, it does not have to rotate rigidly like the solid planets and moons do. In fact, the Sun's equatorial regions rotate faster (taking only about 24 days) than the polar regions (which rotate once in more than 30 days).
Can you see sunspots from Earth?
Sunspots expand and contract as they move across the surface of the Sun, with diameters ranging from 16 km (10 mi) to 160,000 km (100,000 mi). Larger sunspots can be visible from Earth without the aid of a telescope.
Does the sun have Corona?
The corona is the outer atmosphere of the Sun. It extends many thousands of kilometers (miles) above the visible "surface" of the Sun, gradually transforming into the solar wind that flows outward through our solar system.
Whats the definition of sunspots?
Definition of sunspot
: any of the dark spots that appear at times on the sun's surface and are usually visible only through a telescope.
What is the sunspot number?
The sunspot number = k(10 g + s) where g is the number of sunspot regions, s is the number of spots, and k is a variable quantifying observing conditions and observer biases. Note that the sunspot cycle varies in both intensity and length.
Who was the first to observe sunspots?
The first person to show the sunspots were features on the Sun itself was a German astronomer named Johannes Fabricius. Using a pinhole camera, he observed clusters of sunspots for months, showing that they vanished over the Sun's western edge, then appeared again two weeks later on the other side.
Who discovered sunspots?
In late 1610, both Galileo and the English mathematician Thomas Harriot observed sunspots, although their observations were unknown to one another.
