Spectral Classification of Stars
... investigate solar interior is through Helioseismology = analysis of vibration patterns visible on the solar surface: Approx. 10 million wave patterns! ...
... investigate solar interior is through Helioseismology = analysis of vibration patterns visible on the solar surface: Approx. 10 million wave patterns! ...
The Sun
... • The sun and its atmosphere are divided into several zones and layers: The solar interior, from the inside out, is made up of the core, radiative zone and the convective zone. The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona. ...
... • The sun and its atmosphere are divided into several zones and layers: The solar interior, from the inside out, is made up of the core, radiative zone and the convective zone. The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona. ...
The Universe: Secrets of the Sun (History Channel production)
... 4. The material in the Sun is not considered a gas; it is called a ________________________. 5. The fusion of two hydrogen atoms produces helium particles with extra mass; this mass is given off as __________________________. 6. Particles of light and heat are called _________________________; once ...
... 4. The material in the Sun is not considered a gas; it is called a ________________________. 5. The fusion of two hydrogen atoms produces helium particles with extra mass; this mass is given off as __________________________. 6. Particles of light and heat are called _________________________; once ...
VOC 3J-2
... 15. Energy is produced in the center, or ______________________, of the sun. 16. Energy passes from the sun’s core through a dense region called the______________________. 17. Hot gases are carried to the sun’s visible surface from a region called the______________________. 18. Energy leaves the sun ...
... 15. Energy is produced in the center, or ______________________, of the sun. 16. Energy passes from the sun’s core through a dense region called the______________________. 17. Hot gases are carried to the sun’s visible surface from a region called the______________________. 18. Energy leaves the sun ...
Magnetic Fields of Sun PowerPoint
... active regions are places where the magnetic field is especially strong and often produces sunspots. Disruptions in magnetic fields near active regions can cause explosions on the sun such as solar flares and Coronal Mass ...
... active regions are places where the magnetic field is especially strong and often produces sunspots. Disruptions in magnetic fields near active regions can cause explosions on the sun such as solar flares and Coronal Mass ...
Our Star the Sun
... zone – A very dense region of the sun about 300,000 km thick where it takes light millions of years to pass through. ...
... zone – A very dense region of the sun about 300,000 km thick where it takes light millions of years to pass through. ...
Helioseismology and the Helium Abundance
... It takes only a brief scrutiny of the equations describing the structure and dynamical evolution of the Sun (it is not quite so brief to derive them) and the equations governing the low-amplitude seismic modes of oscillation to appreciate what broadly can, at least in principle, be reliably inferred ...
... It takes only a brief scrutiny of the equations describing the structure and dynamical evolution of the Sun (it is not quite so brief to derive them) and the equations governing the low-amplitude seismic modes of oscillation to appreciate what broadly can, at least in principle, be reliably inferred ...
Chapter 26 – The Sun and the Solar System
... a. Some are barely visible while others are 4 times larger than Earth b. Small one may last a few hour – large ones months c. Are very hot and bright – look dark because the photosphere is so much hotter and brighter than the sunspots d. Move from left to right across surface i This gave evidence th ...
... a. Some are barely visible while others are 4 times larger than Earth b. Small one may last a few hour – large ones months c. Are very hot and bright – look dark because the photosphere is so much hotter and brighter than the sunspots d. Move from left to right across surface i This gave evidence th ...
The Sun - TeacherWeb
... The sun’s structure • Core – 27 million degrees Fahrenheit, where thermonuclear fusion occurs • Photosphere – innermost part of sun’s atmosphere but still visible to us, made of hydrogen gas that burns at 9000 degrees Fahrenheit – causes it to glow yellow ...
... The sun’s structure • Core – 27 million degrees Fahrenheit, where thermonuclear fusion occurs • Photosphere – innermost part of sun’s atmosphere but still visible to us, made of hydrogen gas that burns at 9000 degrees Fahrenheit – causes it to glow yellow ...
Ask an Astronomer
... the same thing for another 5 billion years, until it runs out of hydrogen. But what happens then? Does the Sun just turn off? The answer is far more exotic. Once the hydrogen runs out, the core of helium at the center of the Sun will start to collapse in on itself. As it does so, it gets hotter and ...
... the same thing for another 5 billion years, until it runs out of hydrogen. But what happens then? Does the Sun just turn off? The answer is far more exotic. Once the hydrogen runs out, the core of helium at the center of the Sun will start to collapse in on itself. As it does so, it gets hotter and ...
27Oct_2014
... boiling water (hot gas rises, dumps its energy into the photosphere, and then sinks) ...
... boiling water (hot gas rises, dumps its energy into the photosphere, and then sinks) ...
Sun note sheet - Lauer Science
... ___________________ – middle layer – transparent. ___________________ – upper layer – transparent. The bright visible surface of the Sun is called the __________________. When looking at the Sun, the edges appear orange and darker than the central yellow region. This is known as ______________ ...
... ___________________ – middle layer – transparent. ___________________ – upper layer – transparent. The bright visible surface of the Sun is called the __________________. When looking at the Sun, the edges appear orange and darker than the central yellow region. This is known as ______________ ...
Grade 9 Science – Unit 4
... convection current of moving gases (see diagram) CHROMOSPHERE – The inner atmosphere of the Sun. Temperatures in this layer are about 10,000OK PHOTOSPHERE – The “surface’ of the Sun. It is NOT solid; rather, it is an area of churning gases. Average temperature is 5,500OK CORONA – The hot outer ...
... convection current of moving gases (see diagram) CHROMOSPHERE – The inner atmosphere of the Sun. Temperatures in this layer are about 10,000OK PHOTOSPHERE – The “surface’ of the Sun. It is NOT solid; rather, it is an area of churning gases. Average temperature is 5,500OK CORONA – The hot outer ...
Quiz #5 – The Sun
... 1. Sunspots moving across the surface of the sun proves that it rotates. 2. Which layers of the sun can be viewed during an eclipse? Chromosphere & corona 3. The fusion reaction that produces the sun’s energy occurs in which layer? Core 4. The apparent yellow surface of the sun is the photosphere. 5 ...
... 1. Sunspots moving across the surface of the sun proves that it rotates. 2. Which layers of the sun can be viewed during an eclipse? Chromosphere & corona 3. The fusion reaction that produces the sun’s energy occurs in which layer? Core 4. The apparent yellow surface of the sun is the photosphere. 5 ...
The Sun as the prime example of stellar structure and evolution
... • Photosphere • Chromosphere • Corona ...
... • Photosphere • Chromosphere • Corona ...
Topics on the Sun and the Life
... Thermonuclear reactions 4 H He + energy + neutrinos Mass of 4 H > Mass of 1 He •In every second, 600 million tons of hydrogen converts into helium to power the Sun •At this rate, the Sun can last for about 10 billion years •It is now 4.6 billion year old •It will continue the hydrogen burning for ...
... Thermonuclear reactions 4 H He + energy + neutrinos Mass of 4 H > Mass of 1 He •In every second, 600 million tons of hydrogen converts into helium to power the Sun •At this rate, the Sun can last for about 10 billion years •It is now 4.6 billion year old •It will continue the hydrogen burning for ...
What is the sun look like
... Why do the stars look small in the sky although they are very big ? Because they are far away from us. ...
... Why do the stars look small in the sky although they are very big ? Because they are far away from us. ...
THE PHOTOSPHERE IS THE VISIBLE SURFACE OF THE SUN
... The diameter of the sun is 1.4 million km or about 109 earth diameters. The sun is almost 6,000 times the mass of Earth. ...
... The diameter of the sun is 1.4 million km or about 109 earth diameters. The sun is almost 6,000 times the mass of Earth. ...
sunspots
... Solar wind • streaming electrically charged atomic particles that constantly escape from the Sun through coronal holes, which are weak spots in the Sun’s magnetic field. • It is faster and much hotter than Earth’s wind. • Solar wind is traveling at about 1 million miles an hour by the time it gets ...
... Solar wind • streaming electrically charged atomic particles that constantly escape from the Sun through coronal holes, which are weak spots in the Sun’s magnetic field. • It is faster and much hotter than Earth’s wind. • Solar wind is traveling at about 1 million miles an hour by the time it gets ...
The Planets and the Sun
... ______. This layer is blanketed by the sun’s corona atmosphere, or _____. It is the only part we can see during a solar eclipse. Dark areas on the sunspots These dark surface of the sun are ______. Solar flares Brief bursts of areas can produce ______. energy from the sun’s surface. As this energy i ...
... ______. This layer is blanketed by the sun’s corona atmosphere, or _____. It is the only part we can see during a solar eclipse. Dark areas on the sunspots These dark surface of the sun are ______. Solar flares Brief bursts of areas can produce ______. energy from the sun’s surface. As this energy i ...
THE SUN - Mother Teresa Regional School
... radiation zone, and the convection zone. Unlike Earth, the sun does not have a solid surface. Rather it is a big ball of gas made mostly of hydrogen and helium and smaller amounts of other elements. ...
... radiation zone, and the convection zone. Unlike Earth, the sun does not have a solid surface. Rather it is a big ball of gas made mostly of hydrogen and helium and smaller amounts of other elements. ...
Sunspots - Sage Middle School
... http://astro.unl.edu/classaction/animations/ sunsolarenergy/fusion01.html ...
... http://astro.unl.edu/classaction/animations/ sunsolarenergy/fusion01.html ...
Sun
The Sun (in Greek: Helios, in Latin: Sol) is the star at the center of the Solar System and is by far the most important source of energy for life on Earth. It is a nearly perfect spherical ball of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. Its diameter is about 109 times that of Earth, and it has a mass about 330,000 times that of Earth, accounting for about 99.86% of the total mass of the Solar System.About three quarters of the Sun's mass consists of hydrogen; the rest is mostly helium, with much smaller quantities of heavier elements, including oxygen, carbon, neon and iron.The Sun is a G-type main-sequence star (G2V) based on spectral class and it is informally referred to as a yellow dwarf. It formed approximately 4.567 billion years ago from the gravitational collapse of matter within a region of a large molecular cloud. Most of this matter gathered in the center, whereas the rest flattened into an orbiting disk that became the Solar System. The central mass became increasingly hot and dense, eventually initiating nuclear fusion in its core. It is thought that almost all stars form by this process. The Sun is roughly middle aged and has not changed dramatically for four billion years, and will remain fairly stable for another four billion years. However, after hydrogen fusion in its core has stopped, the Sun will undergo severe changes and become a red giant. It is calculated that the Sun will become sufficiently large to engulf the current orbits of Mercury, Venus, and possibly Earth.The enormous effect of the Sun on the Earth has been recognized since prehistoric times, and the Sun has been regarded by some cultures as a deity. Earth's movement around the Sun is the basis of the solar calendar, which is the predominant calendar in use today.