Testing - School District of Lomira
... • The sunspot cycle, or the variation in the number of sunspots on the Sun’s surface,has an average period of 11 years.The magnetic field flip-flops every 11 years or so, resulting in a 22-year magnetic cycle. ...
... • The sunspot cycle, or the variation in the number of sunspots on the Sun’s surface,has an average period of 11 years.The magnetic field flip-flops every 11 years or so, resulting in a 22-year magnetic cycle. ...
The Sun and the Solar System
... • Thus the angular momentum of the Sun makes up a negligible part of the total angular momentum! • The angular momentum budget for the Solar System is dominated by the orbital angular momentum of ...
... • Thus the angular momentum of the Sun makes up a negligible part of the total angular momentum! • The angular momentum budget for the Solar System is dominated by the orbital angular momentum of ...
Intro Lecture: Stars - University of Redlands
... the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too close to be directly imaged - until 2 May 1996, when the NPOI prod ...
... the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too close to be directly imaged - until 2 May 1996, when the NPOI prod ...
Astronomy 201 Review 2 Answers What is hydrostatic equilibrium
... other hand, is working to contract the Sun towards its center. The outward pressure of hot gas is balanced by the inward force of gravity, and not just in the core, but at every point within the Sun. What is the Sun composed of? Explain how the Sun formed from a cloud of gas. Why wasn't the ...
... other hand, is working to contract the Sun towards its center. The outward pressure of hot gas is balanced by the inward force of gravity, and not just in the core, but at every point within the Sun. What is the Sun composed of? Explain how the Sun formed from a cloud of gas. Why wasn't the ...
"The Probability and Effects of an Asteroid Impact with Earth"
... Photosphere = light sphere. The region (disk) of the Sun from which light appears to originate. It also constitutes the solar atmosphere. Chromosphere = coloured sphere. The region lying above the solar photosphere containing spicules where the temperature increases with height. Corona = crown. The ...
... Photosphere = light sphere. The region (disk) of the Sun from which light appears to originate. It also constitutes the solar atmosphere. Chromosphere = coloured sphere. The region lying above the solar photosphere containing spicules where the temperature increases with height. Corona = crown. The ...
Chapter 23 Our Solar System 8/13/2013 1
... Greeks watched the stars move across the sky and noticed five “stars” that wandered around and did not follow the paths of the normal stars. “Wandering Stars” were: Mercury, Venus, Mars, Jupiter and Saturn Ptolemy believed: Geocentric - Earth centered Solar system Copernicus: Polish Astronomer belie ...
... Greeks watched the stars move across the sky and noticed five “stars” that wandered around and did not follow the paths of the normal stars. “Wandering Stars” were: Mercury, Venus, Mars, Jupiter and Saturn Ptolemy believed: Geocentric - Earth centered Solar system Copernicus: Polish Astronomer belie ...
ASTR 101 Deming EXAM II November 18 OFFICE HRS in CSS
... Dangers of Impacts—mass extinction example-65 mil. ya. Exoplanets: methods of detection, what are they like? Revision of solar nebula theory Electromagnetic radiation—basic properties of light, wavelength & photon energy gamma rays, x rays, ultraviolet, visible, infrared, radio short wavelength----- ...
... Dangers of Impacts—mass extinction example-65 mil. ya. Exoplanets: methods of detection, what are they like? Revision of solar nebula theory Electromagnetic radiation—basic properties of light, wavelength & photon energy gamma rays, x rays, ultraviolet, visible, infrared, radio short wavelength----- ...
Lecture 9 - Angular Momentum Transport
... Particles lost from the star also carry away angular momentum. Given an initial mass, rotation rate, and radius, we can thus calculate the rate of AM loss. ...
... Particles lost from the star also carry away angular momentum. Given an initial mass, rotation rate, and radius, we can thus calculate the rate of AM loss. ...
instructor notes: week 5
... Photosphere = light sphere. The region (disk) of the Sun from which light appears to originate. It also constitutes the solar atmosphere. Chromosphere = coloured sphere. The region lying above the solar photosphere containing spicules where the temperature increases with height. Corona = crown. The ...
... Photosphere = light sphere. The region (disk) of the Sun from which light appears to originate. It also constitutes the solar atmosphere. Chromosphere = coloured sphere. The region lying above the solar photosphere containing spicules where the temperature increases with height. Corona = crown. The ...
Figure 1 - Research
... • There is a cyclic variation: n is highest soon after sunspot maxima and smallest during sunspot minima. This is partly due to the solar cycle variation of the heliospheric magnetic field, partly due to the varying proximity to the heliospheric currecnt sheet. During sunspot minimum the HCS is flat ...
... • There is a cyclic variation: n is highest soon after sunspot maxima and smallest during sunspot minima. This is partly due to the solar cycle variation of the heliospheric magnetic field, partly due to the varying proximity to the heliospheric currecnt sheet. During sunspot minimum the HCS is flat ...
Lecture 9
... • We measure surface temperatures by looking at the star’s color • Remember that the peak color that something emits depends on its ...
... • We measure surface temperatures by looking at the star’s color • Remember that the peak color that something emits depends on its ...
Today`s Powerpoint
... C: They have much greater density than adjacent regions D: They have much higher temperature than adjacent regions ...
... C: They have much greater density than adjacent regions D: They have much higher temperature than adjacent regions ...
Presentation: The Sun and Solar Nebula Theory
... Stream of charged particles (protons, electrons, alpha particle, etc.) released by the Sun as the corona continually expands into space. Particles from the solar wind interact with the Earth and cause magnetic disturbances and the Aurora. ...
... Stream of charged particles (protons, electrons, alpha particle, etc.) released by the Sun as the corona continually expands into space. Particles from the solar wind interact with the Earth and cause magnetic disturbances and the Aurora. ...
Astronomy Name Formation of the Solar System Directions: Use the
... Directions: Use the words in the text box to complete the blanks. Number the sentences 1-15, in chronological order. gravity Saturn nebula ...
... Directions: Use the words in the text box to complete the blanks. Number the sentences 1-15, in chronological order. gravity Saturn nebula ...
I. Layers of the Sun
... where fusion takes place. Radiation zone: energy flows from core. Convection zone: energy circles back toward core and is then pushed back out by energy coming from radiation zone. ...
... where fusion takes place. Radiation zone: energy flows from core. Convection zone: energy circles back toward core and is then pushed back out by energy coming from radiation zone. ...
Chapter17_New
... diffusion can carry the Sun’s energy to the surface. It is at that distance from the center that opacity becomes large enough for convection to occur. Not noticeable at all because the one week deficit would be spread over more than 100,000 years It is underground to shield the detector from spuriou ...
... diffusion can carry the Sun’s energy to the surface. It is at that distance from the center that opacity becomes large enough for convection to occur. Not noticeable at all because the one week deficit would be spread over more than 100,000 years It is underground to shield the detector from spuriou ...
ASTR-1020: Astronomy II Course Lecture Notes - Faculty
... 5. The Sun is half-way through its “core hydrogen-burning” phase. We know this since one solar mass stars should last on the main sequence (see §III.C.) for 10 billion years and the Sun is currently 5 billion years old. As such, we have 5 billion more years before the Sun becomes a red giant, at whi ...
... 5. The Sun is half-way through its “core hydrogen-burning” phase. We know this since one solar mass stars should last on the main sequence (see §III.C.) for 10 billion years and the Sun is currently 5 billion years old. As such, we have 5 billion more years before the Sun becomes a red giant, at whi ...
Tentamen f¨or kursen Rymdfysik (1FA255) 2015-10-23
... (a) Are the following statements true or false? You do not need to give any motivation or explanation, but can if you wish add comments if you feel the need to do so. i. Specific impulse Isp is a measure of the rocket performance, a lower Isp means a better performance. ii. Kepler’s 2nd law tells us ...
... (a) Are the following statements true or false? You do not need to give any motivation or explanation, but can if you wish add comments if you feel the need to do so. i. Specific impulse Isp is a measure of the rocket performance, a lower Isp means a better performance. ii. Kepler’s 2nd law tells us ...
The Application of Forbidden Line X-Ray Diagnostics to the Hot Star
... the forbidden to intercombination line indicates the strength of the UV field.* In a strong UV field, electrons are often excited out of the long-lived upper level of the forbidden line before they spontaneously de-excite, weakening the forbidden line. * If electron densities are high enough, collis ...
... the forbidden to intercombination line indicates the strength of the UV field.* In a strong UV field, electrons are often excited out of the long-lived upper level of the forbidden line before they spontaneously de-excite, weakening the forbidden line. * If electron densities are high enough, collis ...
The Sun - WordPress.com
... The Satellite was launched August 31, 1991, from Japan. The Satellite takes X-rays of the Sun and send them back in images we cant normally see. The word ‘Yohkoh’ means ‘Sunbeam’ It also sent back gamma ray emissions (pictures like an X-ray) It has spectral lines that provided information ...
... The Satellite was launched August 31, 1991, from Japan. The Satellite takes X-rays of the Sun and send them back in images we cant normally see. The word ‘Yohkoh’ means ‘Sunbeam’ It also sent back gamma ray emissions (pictures like an X-ray) It has spectral lines that provided information ...
Mercury`s Formation
... need to go somewhere Candidates for where the material ended up are the Sun, Venus, and Earth The Solar Winds would most likely leave a few traces of the proto layers since the Solar Winds wouldn’t be able to make a near spherical object Chemical equilibrium condensation models for the solar nebula ...
... need to go somewhere Candidates for where the material ended up are the Sun, Venus, and Earth The Solar Winds would most likely leave a few traces of the proto layers since the Solar Winds wouldn’t be able to make a near spherical object Chemical equilibrium condensation models for the solar nebula ...
Corona
A corona (Latin, 'crown') is an aura of plasma that surrounds the sun and other celestial bodies. The Sun's corona extends millions of kilometres into space and is most easily seen during a total solar eclipse, but it is also observable with a coronagraph. The word ""corona"" is a Latin word meaning ""crown"", from the Ancient Greek κορώνη (korōnē, “garland, wreath”).The high temperature of the Sun's corona gives it unusual spectral features, which led some in the 19th century to suggest that it contained a previously unknown element, ""coronium"". Instead, these spectral features have since been explained by highly ionized iron (Fe-XIV). Bengt Edlén, following the work of Grotrian (1939), first identified the coronal lines in 1940 (observed since 1869) as transitions from low-lying metastable levels of the ground configuration of highly ionised metals (the green Fe-XIV line at 5303 Å, but also the red line Fe-X at 6374 Å). These high stages of ionisation indicate a plasma temperature in excess of 1,000,000 kelvin, much hotter than the surface of the sun.Light from the corona comes from three primary sources, which are called by different names although all of them share the same volume of space. The K-corona (K for kontinuierlich, ""continuous"" in German) is created by sunlight scattering off free electrons; Doppler broadening of the reflected photospheric absorption lines completely obscures them, giving the spectral appearance of a continuum with no absorption lines. The F-corona (F for Fraunhofer) is created by sunlight bouncing off dust particles, and is observable because its light contains the Fraunhofer absorption lines that are seen in raw sunlight; the F-corona extends to very high elongation angles from the Sun, where it is called the zodiacal light. The E-corona (E for emission) is due to spectral emission lines produced by ions that are present in the coronal plasma; it may be observed in broad or forbidden or hot spectral emission lines and is the main source of information about the corona's composition.