powerpoint version
... The angle made by the nearest star is its diameter divided by its distance = 0.00000003 So we see a point of light, not a disc. We certainly can’t see it rotating by watching for surface features. Can we see movement across the sky? Yes for ...
... The angle made by the nearest star is its diameter divided by its distance = 0.00000003 So we see a point of light, not a disc. We certainly can’t see it rotating by watching for surface features. Can we see movement across the sky? Yes for ...
Simulations and radiative diagnostics of turbulence and waves in
... - need to construct a static model which is as close as possible to the real GBP ...
... - need to construct a static model which is as close as possible to the real GBP ...
The Sunspot Cycle
... • Sunspots are a detail showing how the Sun’s magnetic field is leaking out of the zones just below the Sun’s surface. • Magnetic field produced in outer 30% of Sun’s radius. ...
... • Sunspots are a detail showing how the Sun’s magnetic field is leaking out of the zones just below the Sun’s surface. • Magnetic field produced in outer 30% of Sun’s radius. ...
9-Unit 1Chapter 11 Workbook
... the Sun between Mars and Jupiter. 18. _______________________: conditions produced by the Sun that have an effect on the inner solar system, and particularly on the technological devices on or near Earth. 19. _______________________: a celestial body that orbits one or more stars, is large enough th ...
... the Sun between Mars and Jupiter. 18. _______________________: conditions produced by the Sun that have an effect on the inner solar system, and particularly on the technological devices on or near Earth. 19. _______________________: a celestial body that orbits one or more stars, is large enough th ...
Solar Magnetism and Solar Cycle
... stretching, twisting, and folding of the field lines that results from the combined effects of differential rotation and convection. • This theory is called solar dynamo, which predicts that the Sun’s magnetic field should rise to a maximum, then fall to zero and reverse itself in a more-or-less pe ...
... stretching, twisting, and folding of the field lines that results from the combined effects of differential rotation and convection. • This theory is called solar dynamo, which predicts that the Sun’s magnetic field should rise to a maximum, then fall to zero and reverse itself in a more-or-less pe ...
Seasonal and Daily Temperatures and the Earth’s General
... Daylight heats the atmosphere from below by conduction and convection ...
... Daylight heats the atmosphere from below by conduction and convection ...
The Sun - Centra
... Convection zone: gradient of temperature, hot material rises upward, cold material sinks. Energy is transported by physical motion of the gas Photosphere: low density cannot sustained convection process, gas ...
... Convection zone: gradient of temperature, hot material rises upward, cold material sinks. Energy is transported by physical motion of the gas Photosphere: low density cannot sustained convection process, gas ...
ppt - University of Waterloo
... So: the Sun is mostly calcium, iron and sodium?? No! Not quite that simple… ...
... So: the Sun is mostly calcium, iron and sodium?? No! Not quite that simple… ...
Chapter 20 The Universe
... 1. Chromosphere- above photosphere - “sphere of color” bright red - 2500 km thick - 100,000 degrees C (hotter!) -only seen during solar eclipse photosphere is blocked -Solar prominences- erupting clouds of gas that fall back to sun Motions & Activities of Sun -energy at Earth now was created at sun’ ...
... 1. Chromosphere- above photosphere - “sphere of color” bright red - 2500 km thick - 100,000 degrees C (hotter!) -only seen during solar eclipse photosphere is blocked -Solar prominences- erupting clouds of gas that fall back to sun Motions & Activities of Sun -energy at Earth now was created at sun’ ...
Space Weather
... Just as the sun is a major driver of terrestrial weather, it is also the sun’s magnetic field and plasma. The plasma suspended above the source of all space weather. While the intensity of the light the surface of the sun is held up by twists and turns of the compliemitted by the sun is relatively c ...
... Just as the sun is a major driver of terrestrial weather, it is also the sun’s magnetic field and plasma. The plasma suspended above the source of all space weather. While the intensity of the light the surface of the sun is held up by twists and turns of the compliemitted by the sun is relatively c ...
Weathering, Erosion and Mass Movement
... The photosphere is the Sun's visible surface, due to its high temperature, it glows yellow. ...
... The photosphere is the Sun's visible surface, due to its high temperature, it glows yellow. ...
Lecture4 - University of Waterloo
... Atomic absorption and emission • The electrons of an atom occupy restricted regions around the nucleus – called shells, or orbitals, or energy levels. • Generally the electrons occupy the lowest possible orbital/energy level but they will sometimes change to a higher level if they gain enough energ ...
... Atomic absorption and emission • The electrons of an atom occupy restricted regions around the nucleus – called shells, or orbitals, or energy levels. • Generally the electrons occupy the lowest possible orbital/energy level but they will sometimes change to a higher level if they gain enough energ ...
Plasma: the 4th State of Matter and a Path to Fusion Energy use in
... Conditions must be right for fusion to occur Just as in a chemical reaction, fusion reactions are governed by probabilities. For fusion to occur, the product of the density (n), temperature (T), and energy confinement time () must be greater than some value. This is known as the Lawson criteria, L ...
... Conditions must be right for fusion to occur Just as in a chemical reaction, fusion reactions are governed by probabilities. For fusion to occur, the product of the density (n), temperature (T), and energy confinement time () must be greater than some value. This is known as the Lawson criteria, L ...
The Evolution of the Solar System
... and gases all around areas. Grains of dust collided and formed bigger and bigger lumps. Some of these lumps crashed together and formed planets, drawn together under gravity. The four solid rock planets, Mercury, Venus, Earth, and Mars were created. In the outer regions of the disk, the solar wind w ...
... and gases all around areas. Grains of dust collided and formed bigger and bigger lumps. Some of these lumps crashed together and formed planets, drawn together under gravity. The four solid rock planets, Mercury, Venus, Earth, and Mars were created. In the outer regions of the disk, the solar wind w ...
Sun PPT from class
... The sunspot cycle over the past 400 years. Note the period before 1700, when, for reasons that are not understood, very few sunspots were observed. Sunspots have reached a maximum about every 11 years since 1700, and there is also a suggestion of some sort of cycle on a 55- to 57-year time scale. B ...
... The sunspot cycle over the past 400 years. Note the period before 1700, when, for reasons that are not understood, very few sunspots were observed. Sunspots have reached a maximum about every 11 years since 1700, and there is also a suggestion of some sort of cycle on a 55- to 57-year time scale. B ...
ASTR 101 Final Study Guide I received study guides for Chapters 1
... The high temperature at the core of a massive star allows it to fuse its hydrogen into helium. The properties of a stars core depend greatly on the mass of the star. A star’s life begins when its core temperature rises above about 5 million K. A star like the sun may increase in luminosity by a fact ...
... The high temperature at the core of a massive star allows it to fuse its hydrogen into helium. The properties of a stars core depend greatly on the mass of the star. A star’s life begins when its core temperature rises above about 5 million K. A star like the sun may increase in luminosity by a fact ...
NEBULAR HYPOTHESIS
... inward due to gravitational forces ⦿ At the beginning of this collapse we form a SOLAR NEBULA. ...
... inward due to gravitational forces ⦿ At the beginning of this collapse we form a SOLAR NEBULA. ...
1 - WordPress.com
... 30. The photographs that follow show parts of the most recognizable features of three planets in our solar system. Name the planets and the features. ...
... 30. The photographs that follow show parts of the most recognizable features of three planets in our solar system. Name the planets and the features. ...
Astronomy 10: Introduction to General Astronomy Instructor: Tony
... (10) page 242, question 5 Things that vary with the solar-activity cycle: sunspots, solar flares, coronal mass ejections, prominences, and the total energy output of the Sun. (11) page 242, question 10 Although the corona is very hot, it is also very faint. This makes it difficult to see against the ...
... (10) page 242, question 5 Things that vary with the solar-activity cycle: sunspots, solar flares, coronal mass ejections, prominences, and the total energy output of the Sun. (11) page 242, question 10 Although the corona is very hot, it is also very faint. This makes it difficult to see against the ...
Slide 1
... Sunspots: A modern understanding Sunspots are about 2,000 degrees Kelvin cooler than the average temperature on the photosphere (5,000 degrees Kelvin). They are bright but appear to be dark only in comparison to their very bright surroundings. Following long-lived sunspots through time allows one t ...
... Sunspots: A modern understanding Sunspots are about 2,000 degrees Kelvin cooler than the average temperature on the photosphere (5,000 degrees Kelvin). They are bright but appear to be dark only in comparison to their very bright surroundings. Following long-lived sunspots through time allows one t ...
optical illusions caused by the refracted light through the overheated
... Thanks to the mountains of the opposite side of the wind, the dominant trade winds, hot and damp, rise, creating clouds and daily rainfall. And so appear many rainbows. ...
... Thanks to the mountains of the opposite side of the wind, the dominant trade winds, hot and damp, rise, creating clouds and daily rainfall. And so appear many rainbows. ...
THE SUN: OUR STAR
... years later, the surface of the Sun will be 3.3 times the size it is now and have a temperature of about 4300 degrees. The temperature on Earth will increase by 100 degrees, causing all the seas to evaporate and destroying life on Earth as we know it. Within another 250 million years, the Sun will g ...
... years later, the surface of the Sun will be 3.3 times the size it is now and have a temperature of about 4300 degrees. The temperature on Earth will increase by 100 degrees, causing all the seas to evaporate and destroying life on Earth as we know it. Within another 250 million years, the Sun will g ...
Focusing on Visible Light
... form of the energy may change from Xray to visible wavelengths. When the photon leaves the Sun, it takes eight minutes to get to us at the speed of light. ...
... form of the energy may change from Xray to visible wavelengths. When the photon leaves the Sun, it takes eight minutes to get to us at the speed of light. ...
Chapter 11 - Astronomy
... This cools the region above the plug, which then becomes denser and plunges downward at high speeds, drawing the surrounding plasma and field toward the center of the sunspot. This increases the strength of the sunspot and this cycle repeats for as long as the field is strong enough to behave like a ...
... This cools the region above the plug, which then becomes denser and plunges downward at high speeds, drawing the surrounding plasma and field toward the center of the sunspot. This increases the strength of the sunspot and this cycle repeats for as long as the field is strong enough to behave like a ...
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.