While the early part of the sunspot record before 1800 is still characterized by large uncertainties due to poorly observed periods, the more recent sunspot numbers are mainly affected by three . D) The chromosphere and corona are both best studied with radio telescopes. How can we best observe the Sun's chromosphere and corona? If the distance between two objects is cut in half, what happens to the Which of the following best explains why nuclear fusion requires bringing nuclei extremely close together? Sunspots may also be caused by changes in the Suns rotation, which can cause its poles to move, creating changes in the magnetic field and sunspot activity. E) all of the above. Sunspots have been continuously counted each day since 1838, which has allowed solar scientists to describe a repeating pattern in the wax and wane of activity on the Sun's surfacethe solar. C) The brightening and darkening of the Sun that occurs during the sunspot cycle affects plant photosynthesis here on Earth. D) They actually are fairly bright, but appear dark against the even brighter background of the surrounding photosphere. B) 4 million tons ozone and VOCs. Why is the hole in the ozone greatest over Antarctica? If the Sun's core suddenly shrank a little bit, what would happen in the Sun? d. What is the typical length of time between sunspot minimums and sunspot maximum; that is, what is the typical length of the "sunspot cycle"? b. B E. It has a ratio of turns N1/N2N_1 / N_2N1/N2 of 100 to 1. D) dust particles in the Sun that haven't been turned into plasma B) photosphere. What is the solution to the solar neutrino problem? A) the specific set of nuclear reactions through which the Sun fuses hydrogen into helium. B. the oblate spheroidal shape of Earth produces photochemical smog. An astronomer plots the HR diagram of a star cluster and finds that, it D B View full document. True False. Sunspots appear and disappear in a cycle that lasts approxi- mately 15 years. A) The Sun rotates faster at its poles. C) The Sun's entire magnetic field flip-flops at the end of each cycle (at solar minimum). D more mass than the four hydrogen atoms, because energy is. 16. Which of the following is true regarding the depletion of ozone in the ozonosphere? A E) several hundred years ago. How thick would you need to make this shield to ensure that it can stop a neutrino? All the photons produced in the Sun's core have been absorbed by the outer edge of what region of the Sun? Elin la miraba con amor tambin. *b. . Which of the following best describes what would happen? D) the Sun is roughly the same color as blood. more sunspots indicate increased solar radiation. Wayne didn't need a degree in _____ to know that the living version of the beast whose bones he discovered was _____ by human standards of beauty. Because they are cooler, they emit less thermal radiation per unit area and therefore look dark in contrast to brighter surrounding regions. in correct order of increasing temperature? A Sunspots are actively rotating regions that contain strong magnetic fields and are usually found in pairs. is ineffective because so few countries have ratified it. E) a million years ago. They are regions of reduced surface temperature, caused by concentrations of magnetic field flux that inhibit convection. The Sun formed from a cloud of gas. 33. A repairman climbs the pole. Question there were no dark energy, the expansion of the universe would be: constant accelerating decelerating . D) Nothing; this is an artist's rendering of the sun. What happens to the missing matter? The presence of sunspots can indicate storms on the sun, which can release bursts of solar energy called solar flares that can interfere with communication systems and cause harm to astronauts in space. It was imaged by the SOHO Observatory. Because they have very thin atmospheres that do not emit, continuum sufficient to halt the collapse. Solved Which of the following is NOT a correct statement - Chegg d. They increase and decrease in number, relatively regularly. Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. nitrogen oxides and ozone C Question 4 options: They are holes where we can see into the the interior of the Sun. B d. What is the average temperature of the surface of the Sun? The solar spectrum is a good example of what kind of spectrum? C A) several thousand years ago. A) The number of sunspots peaks approximately every 11 years. Tree rings show the history of drought, fire, and other environmental variations. Sunspots are areas on the surface of the Sun that appear darker than their surrounding regions. What proportion of climate scientists has concluded that humans are the primary driver of today's climate warming? C) The chromosphere and corona are both best studied with visible light. which of the folloing statements about ionization energy is true? computer-based processing tool for analyzing geographic data. Therefore, scientists predict that neutrinos should come from the Sun if fusion is occurring in its core. C) They are all strongly influenced by magnetic fields on the Sun. C) It has played a role throughout the Sun's history, but it was most important right after nuclear fusion began in the Sun's core. D) orange which of the following is not true of sunspots? C) The number of solar flares peaks about every 11 years. As it contracted, its gravitational potential energy was converted to thermal energy. was ratified by the U.S. Congress in 1987. D B) The rate at which fusion occurs would increase, leading to an expansion of the core, which would in turn cause the temperature to drop back down. Sunspots occur in a regular cycle, with the number of sunspots occurring in any given year peaking and waning. Solved QUESTION 30 According to the lastest survey | Chegg.com Neutrinos from the core collide with gas atoms and prevent them, c. E) The term solar neutrino problem refers to the fact that neutrinos are extremely difficult to detect. Which of the following statements about the sunspot cycle is not true The Milky Way Galaxy contains over 300 million stars Our solar system consists of 8 planets, more than 100 moons, drawf planets, asteroids, and meteors The planetesimal hypothesis pertains to the formation of the planets. As you approach the Sun, you will enter the corona, an extremely hot layer of gas, but so low in density that you won't really feel how hot it is. Higher-mass stars run through their lives faster and have shorter, b. A hydrogen nucleus (a proton) has a charge of +1 and a helium, nucleus D. They are surface disturbances caused by magnetic storms. These . C. The tropopause serves as a buffer against the pressure exerted by the atmosphere. A) It slowly works its way to the Sun's surface, where it escapes into space. D) trillions of degrees. D B Why do you turn down this excellent offer? They exert pressure outward, counterbalancing atmospheric pressure. C) 5 billion years. B) Fission reactions in the Sun have ceased. D) They are thick clouds on the sun, blocking its light. They are caused by intense magnetic fields that disrupt the flow of plasma, which is a superheated, electrically charged state of matter formed from the gases of the Sun. Which of the following is true of the ionosphere? Because they are shrouded in very thick atmospheres. causes lung irritation, asthma, and susceptibility to respiratory illness in humans. A) The core would cool off and continue to shrink as its density increased. the luminosity of stars reaches a peak at around 1 solar mass. A Penn State professor explains how the northern lights put on a show They move along with the Suns active region and can measure up to 50,000 miles across. d. (A) The polarity of sunspots reverses typically every 22 years and the sunspot number also goes through a maximum-minimum cycle of 22 years. C) Not all fusion reactions create neutrinos. Which of the following major perturbations can occur to a close, binary which of the following is not true of sunspots? D) Neutrinos have a tendency to pass through just about anything without interactions, making them very difficult to detect. one continuous zone that functions as a whole. ASTR&101 - Ch. 14 Flashcards | Quizlet Removing Sunspots on Face: Treatment and At-Home Remedies - Healthline 28. A "star" appears to become periodically dimmer for a few hours at, b. Solved 35. Which of the following statements is not true? A. | Chegg.com What is the only force that can overcome the repulsion between two positively charged nuclei to bind them into an atomic nucleus? Sunspots are regions on the suns surface that appear darker than their surroundings because they feature slightly cooler temperatures than their surroundings. They gradually shrink to the size of the Earth. How much mass does the Sun lose through nuclear fusion per second? D) Both have approximately the same mass. Which of the following cannot be attributed to the effects of Earth's rotation? B. PDF ASTR1102-002 Practice Questions for Exam #2 B) Both processes involve nuclear fusion, but the Sun fuses hydrogen while nuclear power plants fuse uranium. However, some energy is released from the upper layers of the solar atmosphere. They are distributed approximately uniformly over the Sun's surface both in position and in time. Experts are tested by Chegg as specialists in their subject area. The statement "Sunspots are brighter than the rest of the sun's surface" is false. Briefly explain how the Sun became hot enough for nuclear fusion. The Sun's core is an astonishing 29,000,000 degrees F., while the pressure is about 100 billion times the atmospheric pressure here on Earth. B) the Sun is made of atoms and molecules. A. Sunspots are cooler than the surrounding region of the Sun's surface. C A) the Sun vibrates only on the surface. For example, by detecting solar neutrinos we can learn more about the fusion that is going on within the Sun's core. E) all of the above. Which of the following best describes where other forms of light are released? Because of the electromagnetic force, the two protons will It primarily absorbs harmful infrared wavelengths. Photographs reveal that most of them have atmospheres much like that of Jupiter. A) It predicted that the Sun could last only about 25 million years, which is far less than the age of Earth. Which part of the Hertzsprung-Russell diagram is occupied by, c. New resources and matter are being added to Earth's systems all the time. (Image credit: SOHO) The first of these refers to strong disturbances to Earth's magnetic field caused by ejected solar. B These magnetic fields are produced by complex interactions within the solar atmosphere which can cause energy to be released in the form of flares, coronal mass ejections and other eruptions. predicted finally . Only about 1/3 of the expected number of neutrinos is observed. How is the sunspot cycle directly relevant to us here on Earth? They increase and decrease in number, relatively regularly. b. Oceanic crust spreads at mid-ocean ridges, creating new crust and slowly enlarging the ocean basin. The temperature of the Sun's photosphere is, 11. B) Neutrinos are created as a by-product of the proton-proton chain. Thus, the north magnetic pole becomes the south magnetic pole and vice versa. is itchy, painful, red, or bleeding is unusual in color Preventing sunspots You may be able to prevent sunspots on your face by limiting your exposure to UVA and UVB rays. sunspots can produce flares and prominences. They are magnetic storms. The Sun Is Now More Active Than NASA Predicted. It Could Be In Its A) Nuclear fusion in the Sun's core produces visible light photons. C which of the folloing statements about ionization energy is true? Once a year c. Every 2 years d. Every 11 years e. Every 10,000 years 4. D) None; they are blocked by the Earth's atmosphere. E) green. Which of the following is currently a big mystery to solar physicists? As the cycle ends, it . Sunspots appear in cycles, with high numbers of spots occurring during certain periods and low numbers at others. E) lumps of denser material in the Sun, What are coronal holes? A) remain stationary. They are cooler than the surrounding photosphere of the Sun. List at least two ways the sunspot cycle affects us on Earth. It is based on the surviving letters of Galileo Galilei's daughter, the nun Suor Maria Celeste, and explores the relationship between Galileo and his daughter.It was nominated for the 2000 Pulitzer Prize for Biography or Autobiography. white dwarf, black hole, neutron star, b. Sunspots are cooler areas on the sun's surface that are relatively darker than the surrounding surface and are caused by intense concentration of magnetic fields. Solar sunspots are temporary features on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. False. Not only is Earth suddenly spinning faste r, but our Sun is getting more active than NASA predicted. C) The rate of nuclear fusion in the Sun peaks about every 11 years. A) regions on the photosphere where magnetic lines poke through, creating the cooler areas of the sunspots B) observing X-ray images of the solar interior using satellites B) Sunspots are brighter than the rest of the Sun's surface. Which of the following can be used to determine the temperature of a A) The number of sunspots peaks approximately every 11 years. A) nuclear fission. Air pressure at sea level is approximately 1013.2 mb. B) core, convection zone, radiation zone, corona, chromosphere, photosphere contains hot B-type stars on the main sequence and cooler G- and, K-type known 10. At the center of the Sun, nuclear fusion converts hydrogen into Which of the following is not true about solar flares - Course Hero black hole, neutron star, white dwarf, *c. The chromosphere is the layer of the Sun that we see as its visible surface. Another way that we can learn about the Sun is by capturing the particles in the solar wind that come from the Sun. Therefore, in conclusion, sunspots do not make the Earth hotter. What is the primary source of energy for the Sun? prominences Sunspots are dark patches on the surface of the Sun that vary from a few hundred kilometers to tens of thousands of kilometers in diameter. By what process do nuclear power plants on the Earth generate energy? D) 11 years ago. Which of the following is not true of sunspots? Which of the following is true of the Sun's electromagnetic spectrum? A) helioseismological fluctuations. D) Gravitational contraction involves the generation of heat by chemical reactions, much like the burning of coal. B) It referred to the fact that neutrinos are extremely difficult to detect. E) magnetic fields lift material from the surface of the Sun, cooling off the material faster. D B Briefly describe what you will see as you descend. surface disturbance on the Sun's surface caused by magnetic storms is called a(n). The CFC molecules react with ultraviolet light to release chlorine which then destroys ozone. Sunspots are more important to global warming than GHGs There is more methane in the atmosphere than carbon dioxide Arctic Greening will absorb most of the carbon we emit to the atmosphere Greenhouse gases are by far the largest contributor to modern global warming Volcanic explosions can cool Earth's climate for hundreds of years. system and radically alter the evolution and behavior of the, a. Earth represents a vast integrated system. two zones that absorb radiation from the Sun. A) It predicted that the Sun would shrink noticeably as we watched it, but the Sun appears to be stable in size. C) The radiation produced by fusion reactions that is trapped in the core gradually raises the temperature, increasing the rate of fusion. Astronomy Chapter 9 Quiz B Flashcards | Chegg.com A C) It predicted that the Sun could shine for about 25 million years, but geologists had already found that Earth is much older than this. The embankment will be constructed in layers of 8 inch depth, loose measure then compacted to a dry unit weight of 114pcf at a moisture content of 18.3%. A) chemical reactions B) weak force A homeowner starts a gasoline-powered 120V120-\mathrm{V}120V generator and clips its output terminals to "hot" and "ground" terminals of the electrical panel for his house. If the solar core were to increase in temperature, the nuclear fusion rate would soar, generating excess energy that increases the pressure and pushes the core outwards. producing excess energy and therefore will not produce the. Which of the following characterizes Earth's revolution? B) 3 He 1 C + energy. A) one year ago. (a) Determine the energy of the second excited rotational state, with J = 2. rmine the net force on the dam. ~ Very strong energy source production ofjets formed in isolated areas varies on extremely long timescales strong radio source 1/ point 1/ point 1/ point. C) corona. apparent brightness against intrinsic brightness of a group of. We don't know, since their lifetimes are longer than the age of. *b. a. occasionally x rays and visible light. D) a few hundred thousand years ago. Briefly explain why sunspots are cooler than surrounding regions of the Sun and why they look dark in photos. D) areas in the corona that allow us to see through to the photosphere D) measuring Doppler shifts to observe solar vibrations SVSU GEOG101! Chapter 1 Flashcards | Quizlet A) They are composed of different elements than the rest of the sun. The top of the Earth's atmosphere is approximately B A) We have X-ray images from satellites of the interior of the Sun. A. E) Radio waves can pass directly through the gas which allows us to see the core. The surface of the Sun is a very busy place. A The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. A magnet, for example, may attract another thing. 9. Which of the following is the best answer to the question, "Why does the Sun shine?" Along the way, changes in the Sun's magnetism produce a greater number of sunspots, more energy and cause solar eruptions of particles. Every second, the Sun converts about 600 million tons of hydrogen into 596 million tons of helium. Which of the following sequences of stellar spectral classifications. You will then reach the source of these photons, the core of the Sun, which is actively involved in nuclear fusion, converting hydrogen into helium and releasing multitudes of photons and neutrinos. 32. E. Earth's axial tilt, the timing of Earth's perihelion and aphelion (D). 3. C) No one understands how it can be possible for neutrinos to be produced in the Sun. You will then enter this convective layer, feeling regions of hot plasma rising upward to meet you and seeing cooler gas descending from the surface. Here's a detailed explanation for each option: Which of the following is NOT true about the differences between vector data model and, 26) Which of the following is a high-altitude cloud? gases in the convective zone. The sun emits radiant energy composed of, 11. Sunspots are more important to global warming than GHGs There is more methane in the atmosphere than carbon dioxide Arctic Greening will absorb most of the carbon we emit to the atmosphere Greenhouse gases are by far the largest contributor to modern global warming Volcanic explosions can cool Earth's climate for hundreds of years B D) It quickly meets an ordinary electron, forming an electron-positron pair that remains stable. It is intrinsically brighter than the Sun. A) Higher temperature would cause the rate of nuclear fusion to rise, which would increase the internal pressure, causing the core to expand and turn the Sun into a giant star. B) It rapidly escapes from the Sun, traveling into space at nearly the speed of light. Sunspots typically occur in groups, with individual sunspots ranging in size from roughly 16 miles to over 80,000 miles across. E. Atmospheric pressure is greatest in the mesosphere. A) They have a tendency to pass through just about any material without any interactions. Sunspots. Which Of The Following Is A True Statement. D) 600 million tons a very small asteroidlike body orbiting the Sun. C) We do not know how to detect electron neutrinos. MID-TERM #1 Chapters 1,2,3 Flashcards by Drew Holland | Brainscape The core of the Sun is A) it is too dangerous to send the Space Shuttle to service satellites during solar maximum. How do we know what is going on in the center of the Sun so well if we cannot see it or send spacecraft to it? B A) tunnels in the outer layers of the Sun that allow photons to escape and form the solar wind Sunspots can vary in size from just a few hundred to over 100,000 kilometers across. B) We did not know how to detect neutrinos. Sunspots are really darker than the surrounding photosphere, and thus appear as black spots on the sun's surface. radiation but only line emissions, like a low density, 18. Energy from the core of the Sun first travels slowly through the convection zone and then much faster through the radiation zone. The intricate patterns visible in an X-ray image of the Sun generally show Which of the following is TRUE? They are hotter than the surrounding photosphere. B The most likely places where stars and planetary systems are forming. They are distributed approximately uniformly over the Sun's surface both in position and in time. Yes, sunspots do circulate around the Sun. Melt from the subducting plate rises to the surface, erupts through the . The "star" appears to wiggle in its path across our sky against, *d. C) chemical reactions. Which of the following statements is not true? What did Galileo discover? | Royal Museums Greenwich - Cutty Sark Which of the following statements about the sunspot cycle is not true? Save my name, email, and website in this browser for the next time I comment. D) The higher temperature would not affect the fusion rate but would cause the core to expand and cool until the temperature returned to normal, with the core at a new, slightly larger size. in the rarified space between galaxies. A) 70% hydrogen, 28% helium, 2% other elements The Sun's surface, as we see it with our eyes, is called the D) The Sun generates energy through fission while nuclear power plants generate energy through fusion. nitric acid and sulfuric acid, formed from nitrogen oxides and sulfur dioxide. C) chemical reactions B) The magnetic polarity of the Sun reverses approximately every 11 years. ch 16 Pearson Questions Flashcards | Quizlet As this question implies, safety precautions must be taken in the use of home generators and during power failures in general. Submarine canyons are deep valleys at passive continental boundaries. How often is there an increase in sunspot activity? No, sunspots are not caused by convection. Sunspot activity is often observed and studied to gain important data about the Suns atmosphere and the local magnetic environment of the Solar system. 34%. C) areas of the corona where magnetic field lines project out into space, allowing charged particles to escape and form the solar wind C. the orientation of Earth's axis They tend to cluster at high solar latitudes. C) the Sun generates energy by nuclear fusion. The Sun is a relatively young star, near the beginning of its life. *b. The first step in the proton-proton chain produces an antielectron, or positron. Sunspots tend to occur in cycles that last 11 years and the peak phase of this cycle is often referred to as the Solar Maximum. A) core, radiation zone, convection zone, corona, chromosphere, photosphere A) Energy slowly leaks outward through the diffusion of photons that repeatedly bounce off ions and electrons. D) The rate at which fusion occurs would decrease, leading to an expansion of the core, which would in turn cause the temperature to drop back down. in the reaction, and the energy adds mass by E = mc2. 480 km (300 mi) above the Earth's surface. Instead he found that the number of sunspots varied with a . Daylength is longest on the summer solstice and is shortest on the winter solstice, D We can measure the luminosity that the Sun is producing and therefore determine how much fusion must be going on in its core. Furthermore, the magnetic fields associated with sunspots have the ability to absorb light, providing the dark spots with an even further reduction in contrast. A. Blackbody spectrum B. C) of increased magnetic interference. question 2) When is/was gravitational contraction an important energy-generation mechanism for the Sun? What is the common cause of sunspots, flares, and prominences? D The highest temperatures in the atmosphere occur in the.
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