How can we best observe the Sun’s chromosphere and corona?
How can we best observe the Sun's chromosphere and corona? The chromosphere is best observed with ultraviolet telescopes and the corona is best observed with X-ray telescopes.
What mechanisms do astronomers believe is responsible for making the Suns outer?
What mechanisms do astronomers believe is responsible for making the Sun's outer atmosphere so much hotter than its photosphere? The Sun's magnetic field interacting with the charged particles that make up the atmosphere. Why do sunspots appear dark?
What lies between the corona and the chromosphere?
Transition Region – The transition region is a very narrow (60 miles / 100 km) layer between the chromosphere and the corona where the temperature rises abruptly from about 8000 to about 500,000 K (14,000 to 900,000 degrees F, 7700 to 500,000 degrees C).
What is the Sun’s chromosphere?
The lower region of the Sun's atmosphere is called the chromosphere. Its name comes from the Greek root chroma (meaning color), for it appears bright red when viewed during a solar eclipse. The chromosphere extends for about 2,000 kilometers (1,200 miles) above the visible surface of the Sun.
When can we see the Sun’s corona?
total solar eclipse The corona is usually hidden by the bright light of the Sun's surface. That makes it difficult to see without using special instruments. However, the corona can be seen during a total solar eclipse. During a total solar eclipse, the moon passes between Earth and the Sun.
Why can we only see the corona and chromosphere during an eclipse?
Because of the light emitted from the sun's photosphere, without help from a coronagraph, the corona is only visible by sight from Earth during a total solar eclipse.
When did scientist begin to understand how the Sun produces all the energy that it does quizlet?
When did scientists begin to understand how the Sun produces all the energy that it does? The process was not well understood until the 1930's.
Which of these solar events is limited to the chromosphere?
The sun's chromosphere The chromosphere emits a reddish glow as super-heated hydrogen burns off. But the red rim can only be seen during a total solar eclipse.
Why can the chromosphere and corona only be seen from Earth during an eclipse?
Because of the light emitted from the sun's photosphere, without help from a coronagraph, the corona is only visible by sight from Earth during a total solar eclipse.
Where is the Sun’s corona?
The corona is the outermost part of the Sun's atmosphere. The corona is usually hidden by the bright light of the Sun's surface. That makes it difficult to see without using special instruments. However, the corona can be seen during a total solar eclipse.
What is corona of Sun?
The corona is the outermost layer of the Sun's atmosphere where strong magnetic fields bind plasma and prevent turbulent solar winds from escaping. The Alfven point is when solar winds exceed a critical speed and can break free of the corona and the Sun's magnetic fields.
Why are the corona and chromosphere invisible from the Earth under normal conditions?
The lower parts of the chromosphere are cooler than the photosphere, while the higher parts are considerably hotter, but the chromospheric material is so thin that it emits relatively little light, and is therefore unseen under normal conditions.
When was the Sun’s chromosphere discovered?
They were discovered in 1877 by Father Angelo Secchi of the Observatory of Roman Collegium in Rome. They last for about 15 minutes and carry about 100 times the mass density per second as the solar wind.
When did scientists begin to understand the Sun?
Many believed the sun revolved around the Earth, with the ancient Greek scholar Ptolemy formalizing this "geocentric" model in 150 B.C. Then, in 1543, Nicolaus Copernicus (opens in new tab) described a heliocentric (sun-centered) model of the solar system, and in 1610, Galileo Galilei (opens in new tab)'s discovery of …
When energy is first produced by nuclear reactions deep in the core of the sun that energy moves outward mostly by what process?
Convection Zone: Just beneath the photosphere, and extending inward to about 0.7 Rsun, is the convection zone. Energy generated in the core of the Sun moves outward through this layer by a boiling motion in which hot plasma rises, releases some of its energy, cools, and then sinks again.
What is the function of the corona in the Sun?
The corona extends far out into space. From it comes the solar wind that travels through our solar system. The corona's temperature causes its particles to move at very high speeds. These speeds are so high that the particles can escape the Sun's gravity.
What is corona in solar system?
corona, outermost region of the Sun's atmosphere, consisting of plasma (hot ionized gas). It has a temperature of approximately two million kelvins and an extremely low density. The corona continually varies in size and shape as it is affected by the Sun's magnetic field.
What is Sun’s corona made of?
corona, outermost region of the Sun's atmosphere, consisting of plasma (hot ionized gas). It has a temperature of approximately two million kelvins and an extremely low density. The corona continually varies in size and shape as it is affected by the Sun's magnetic field.
What is corona in eclipse?
Corona is a luminous envelope of plasma that surrounds the Sun and other celestial bodies. It is extended to millions of kilometres into space and is commonly seen during a total solar eclipse. The intense temperature of the Sun's corona is due to the presence of highly ionized ions which give it a spectral feature.
Who discovered the chromosphere?
They were discovered in 1877 by Father Angelo Secchi of the Observatory of Roman Collegium in Rome. They last for about 15 minutes and carry about 100 times the mass density per second as the solar wind.
Who was the first person to discover the Sun?
Galileo Galilei (1564-1642) The stars are simply too far away, thus yielding few clues as to their nature. In fact, it would take almost another three centuries before the invention of the spectroscope would prove the precise scientific composition of these stellar bodies, and that the Sun is undoubtedly a star.
Who first discovered that the Earth revolves around sun?
Nicolaus Copernicus In 1543, Nicolaus Copernicus detailed his radical theory of the Universe in which the Earth, along with the other planets, rotated around the Sun. His theory took more than a century to become widely accepted.
When did scientists begin to understand how the Sun produces all the energy that it does quizlet?
When did scientists begin to understand how the Sun produces all the energy that it does? The process was not well understood until the 1930's.
What occurs as energy is transferred through the convective zone of the Sun Check all that apply?
What occurs as energy is transferred through the convective zone of the Sun? Check all that apply. Photons are absorbed by hot gas atoms. Energy is transferred through the large-scale movement of material.
How was the corona of the Sun formed?
During a total solar eclipse, the moon passes between Earth and the Sun. When this happens, the moon blocks out the bright light of the Sun. The glowing white corona can then be seen surrounding the eclipsed Sun. Caution!
What is corona in Sun?
The corona is the outermost layer of the Sun's atmosphere where strong magnetic fields bind plasma and prevent turbulent solar winds from escaping. The Alfven point is when solar winds exceed a critical speed and can break free of the corona and the Sun's magnetic fields.
When was the Sun first discovered?
In 1609, using this early version of the telescope, Galileo became the first person to record observations of the sky made with the help of a telescope. He soon made his first astronomical discovery.
When was the first sun discovered?
Who discovered that the Sun was a star? Many people's work was needed to prove that the Sun is a star. The first person we know of to suggest that the Sun is a star up close (or, conversely, that stars are Suns far away) was Anaxagoras, around 450 BC.
What did Galileo Galilei discover?
GanymedeRings of SaturnEuropaIoCallisto Galileo Galilei/Discovered
Who discovered the sun was the center of the solar system?
Copernicus In 1514, Copernicus distributed a handwritten book to his friends that set out his view of the universe. In it, he proposed that the center of the universe was not Earth, but that the sun lay near it.