Which stars are produced during a supernova event?
For Final
| Question | Answer |
|---|---|
| Most stars are in the stage of evolution | main-sequence star |
| The final stage for a star which is as massive as the Sun is a _ | black dwarf |
| These stars are produced during a supernova event | |
| Which color stars have the coolest surface temperature? | red |
What are the most conspicuous features dark areas on the surface of the Sun?
The most conspicuous features on the Sun are aptly called sunspots. These dark splotches belong to the photosphere and occasionally grow large enough to be visible to the naked eye from Earth.
What happens as the temperature of a radiating surface is increased?
the chromospheres. As the temperature of a radiating surface is increased ________. both the total amount of energy emitted increases and a larger portion of the energy is radiated at shorter wavelengths. Astronomers currently estimate the internal temperature of the Sun at 1500°C.
What is the main factor that determines what will happen to a star after it consumes all of its nuclear fuel?
About 75% of the mass of the star is ejected into space in the supernova. The fate of the left-over core depends on its mass. If the left-over core is about 1.4 to 5 times the mass of our Sun, it will collapse into a neutron star. If the core is larger, it will collapse into a black hole.
What is an exploding star called?
A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star. A supernova is the biggest explosion that humans have ever seen. Each blast is the extremely bright, super-powerful explosion of a star.
Do supernovae explode?
These stars end their evolutions in massive cosmic explosions known as supernovae. When supernovae explode, they jettison matter into space at some 9,000 to 25,000 miles (15,000 to 40,000 kilometers) per second.
Where do sunspots occur on the Sun?
Their positions follow a pattern during the solar cycle. 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 hotter or cooler?
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!
What phenomenon occurs on Earth as a result of solar flares on the sun quizlet?
What phenomenon occurs on Earth as a result of solar flares on the Sun? Northern lights.
What physical law describes that hotter objects emit more energy than colder objects?
1. Stefan-Boltzmann's Law: Hotter objects emit more total energy per unit area than colder objects.
Which main sequence stars are the most massive?
The most massive stars stars are the Type O stars which are 50 times more massive than the Sun. These stars are very luminous and use up their available H very quickly.
Which star has the greatest possibility of producing a supernova explosion?
The Truth About Betelgeuse, The Red Supergiant Star That Will Explode As A Spectacular Supernova.
What is supernova explosion?
A supernova is the colossal explosion of a star. Scientists have identified several types of supernova. One type, called a “core-collapse” supernova, occurs in the last stage in the life of massive stars that are at least eight times larger than our Sun. As these stars burn the fuel in their cores, they produce heat.
Will the Sun explode?
No supernova, no black hole Our sun isn't massive enough to trigger a stellar explosion, called a supernova, when it dies, and it will never become a black hole either. In order to create a supernova, a star needs about 10 times the mass of our sun.
What are sunspots and solar flares?
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. Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots.
What is a sunspot cycle quizlet?
solar cycle. Also called the sunspot cycle. An 11-year cycle during which the number of sunspots rises to a maximum or falls to a minimum. The periodic change in the number of sunspots; the cycle is taken as the interval between successive minima and is about 11.1 years.
Does the sun have Corona?
The Short Answer: The Sun's 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 viewed during a total solar eclipse.
Will our sun ever become a red giant?
A red giant is a dying star in the final stages of stellar evolution. In about five billion years, our own sun will turn into a red giant, expand and engulf the inner planets — possibly even Earth.
Where on the sun do solar flares most often occur quizlet?
Solar flares usually occur near sunspots. Prominences form arches from one sunspot area to another. Prominences are the most violent of all solar disturbances.
What causes solar flares quizlet?
A solar flare is a rapid variation in brightness seen on the sun. It occurs when magnetic energy built up in the solar atmosphere is released in huge magnetic loops called solar prominences.
Which physical law states that the hotter the substance the more radiant energy is emitted?
Stefan-Boltzmann law, statement that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature.
What happens solar radiation?
The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth's surface while around 30% is reflected back to space and does not heat the surface.
What is a supernova explosion?
A supernova is the colossal explosion of a star. Scientists have identified several types of supernova. One type, called a “core-collapse” supernova, occurs in the last stage in the life of massive stars that are at least eight times larger than our Sun. As these stars burn the fuel in their cores, they produce heat.
Which star is the most massive quizlet?
Spica, the hottest MS star (B1 means hottest), is the most massive.
What star is about to explode?
Called Betelgeuse, it's found in the famous constellation Orion and over millions of years has swelled in size, earning it the title of a "red supergiant." Betelgeuse, over 500 light-years from Earth, will eventually collapse on itself — or perhaps the distant star already has — resulting in a dramatic explosion called …
Will the sun explode?
No supernova, no black hole Our sun isn't massive enough to trigger a stellar explosion, called a supernova, when it dies, and it will never become a black hole either. In order to create a supernova, a star needs about 10 times the mass of our sun.
What is the Sun exploded?
0:3240:15What If The Sun Exploded? – YouTubeYouTube
What happens when sun explodes?
When that happens, the Sun will become a red giant. It will stop creating heat via nuclear fusion. NASA says the core will become unstable and contract around this time. Once the core starts to become unstable, the outer layers of the Sun will expand.
What are the eruptions of the Sun called?
Sunspot activity generally follows an 11-year cycle, called the “sunspot cycle.” A solar flare is a violent eruption of plasma from the chromosphere of the Sun that is whipped up by intense magnetic activity.
What are solar flares on the Sun?
A solar flare is an intense localized eruption of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other solar phenomena. The occurrence of solar flares varies with the 11-year solar cycle.