which of the following is not true of sunspots

True False 3. They are likely carved out by turbidity currents, which occur when sediment-laden water rapidly moves down slope. By what process do nuclear power plants on the Earth generate energy? D) the Coriolis force Which statement best describes what was called the solar neutrino problem? Experts are tested by Chegg as specialists in their subject area. Describe some of the early theories for why the Sun shines and why they are no longer accepted as viable. D) The planets need more and more energy to maintain any life on them as time goes on, and therefore the Sun must bet hotter. What is the common cause of sunspots, flares, and prominences? C) elements in the Sun other than hydrogen and helium b. The light radiated from the Sun's surface reaches Earth in about 8 minutes, but the energy of that light was released by fusion in the solar core about B) They are extremely rare. Select only one. The photosphere is relatively thin compared to the other atmospheric regions. Because of the electromagnetic force, the two protons will B. ionization energy is the amount of energy used to add an electron to an atom. C) The rate of nuclear fusion in the Sun peaks about every 11 years. It is intrinsically fainter than the Sun. by theoretical models of the Sun. they are brighter than the rest of the sun's surfaced. All radio signals pass through this region virtually unaffected. C) Higher temperature would cause the rate of fusion to fall, decreasing the internal pressure and causing the core to collapse until the rate of fusion returned to normal. 33. (b) Why does the thickness of the dam increase with depth. B. ionization energy is the amount of energy used to add an electron to an atom. Laura miraba a Elin con amor. . luminosity against mass of a group of stars. A) core, radiation zone, convection zone, corona, chromosphere, photosphere C) They are holes in the solar surface through which we can see to deeper, darker layers of the Sun. A) chromosphere. is lost from the atom, and energy is equivalent to mass, c. C) sun spots They collapse and become black holes. After observing the Earth's weather patterns and the 11-year sunspot cycle of the Sun for 36 years, scientists have found that high levels of sunspot activity precede shifts in wind patterns that affect the Earth's weather. A Cepheid variable star with a period of a few days. D) The Sun generates energy through fission while nuclear power plants generate energy through fusion. 16. Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs. Gravitational equilibrium means that the surface and the core of the Sun are at the same pressure. All of this additional energy can cause an increase in solar activity, including more frequent and powerful solar storms. A. A C. Day length varies more at the equator than at higher latitudes. Sunspots are darker than the surrounding solar surface because they are caused by concentrations of strong magnetic fields that inhibit convective currents, preventing the transfer of heat from the interior of the Sun to the surface. they can produce flares and prominencesc. E) Radio waves can pass directly through the gas which allows us to see the core. 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. which of the following is not true of sunspots? The solar thermostat is analogous to the thermostat at home: it works to maintain a constant temperature. False. To estimate the central temperature of the Sun, scientists B) Neutrinos are created as a by-product of the proton-proton chain. Yes, sunspots are an indication of increased activity on the Suns surface. What evidence then do we have to support our current ideas about the solar interior? of indeterminate age, since one cannot estimate the age of the, d. Briefly explain why sunspots are cooler than surrounding regions of the Sun and why they look dark in photos. c. Because they are cooler, they emit less thermal radiation per unit area and therefore look dark in contrast to brighter surrounding regions. C. It is critically important in regulating the temperature of the planet. a subjective determination of temperature. Which of the following is not true of sunspots? Galileo turned his gaze toward Venus, the brightest celestial object in the sky - other than the Sun and the Moon. Iron nuclei are so large that they occupy all remaining space and, c. Which is closest to the temperature of the core of the Sun? B. the oblate spheroidal shape of Earth D) a few hundred thousand years ago. the Sun and energy output per unit area of a star depends on the, 4th Why does the surface of the Sun appear to have a sharp edge? B) corona in the rarified space between galaxies. D) X-ray observations that penetrate the gas The poles have the smallest variation in summer and winter day lengths. Sunspots are often associated with large eruptions on the suns surface known as solar flares. 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. A) the strong force and the weak force Satellites in low-Earth orbits are more likely to crash to Earth when the sunspot cycle is near solar maximum because A rapidly rotating neutron star, producing beams of radio energy. A) We can probe the interior of the Sun by studying the vibrations in its photosphere. 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. Question 17. E) converting gravitational potential energy into electricity. Solar radiation that is intercept by Earth is called. B ) d. Main sequence stars all have approximately the same mass, by, 25. B) The Sun's mass is about 30 times the mass of Earth. D) a thousand years ago. The cycle then repeats for another 11 years with the magnetic poles of the Sun flipped. Granulation or the mottled appearance of the whole solar surface is. B) the strong wind that blows sunspots around on the surface of the Sun less mass than the four hydrogen atoms, because the energy, produced C What happens to the helium-rich core of a star after the core runs, 17. A protostar of about 1 solar mass is gradually contracting and, becoming B) The problem arose only because experimental data were being misinterpreted; on re-examination, the old data showed that the expected number of neutrinos were being detected. computer-based processing tool for analyzing geographic data. The top of the Earth's atmosphere is approximately. D) No one understood how it could be possible for neutrinos to be produced in the Sun. They can have strong magnetic fields that create solar bursts that can cause solar storms on Earth. A pulsating white dwarf star, fluctuating rapidly in brightness. What problem have observers of solar neutrinos run into? C) The rate of nuclear fusion in the Sun peaks about every 11 years. They are cooler than the surrounding photosphere of the Sun. C) The number of solar flares peaks about every 11 years. Which of the following is true of the Sun's electromagnetic spectrum? Why do sunspots appear dark in pictures of the Sun? c. Hundreds of lakes are incapable of supporting life due to high acidity. 1). prominences Which of the following best describes the current status of our understanding of the solar neutrino problem? then They appear dark because they are cooler than other parts of the Sun's surface. E) the weak force. Use the space below to solve this problem. the parallel that is the farthest northern location for the subsolar point during the year. Which of the following processes is involved in the sunspot cycle? Sometimes the Sun's surface displays virtually no sunspots, while at other times its surface displays a relatively large number of sunspots. B) at the same temperature but denser than the surface. the BEST answer for each question and, mark ________ is used in a barometer because ________. B) Fusion reactions decrease the overall number of particles in the core, causing the core to shrink, converting gravitational potential energy into thermal energy, and increasing the rate of fusion. a. From which region of the Sun does the solar wind originate? Which of the following is not true of sunspots? Inside the Sun, this process begins with protons (which is simply a lone hydrogen nucleus) and through a series of steps, these protons fuse together and are turned into helium.So all A,B,C are produced in nuclear fusion in the sun. nitrogen oxides and ozone The spots are dark because the magnetic activity of these regions is so intense that it suppresses convection (the transfer of heat energy to the surface). Course Hero is not sponsored or endorsed by any college or university. 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. D) Sunspots are surface disturbances caused by magnetic storms. c. Why are humans and other living things not crushed by the pressure of the atmosphere? 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. For example, by detecting solar neutrinos we can learn more about the fusion that is going on within the Sun's core. luminosity is independent of the stellar mass. The magnetic fields underlying sunspots are believed to be generated by the suns rotation, which causes a dynamo effect and creates the intense magnetic fields. How do massive stars normally end their lives? C) Newtons A) The Sun is generating energy other than by nuclear fusion. C) the strong force the outflow of neutrinos from the interior, c. Describe a Laura y a Elin usando los verbos recprocos. C E) lumps of denser material in the Sun, What are coronal holes? to theoretical models of the Sun. B) Sunspots are brighter than the rest of the Sun's surface.C) Sunspots can be up to 12 times larger than Earth. C. The subsolar point is at the Tropic of Cancer (23.5 N). sulfur oxides and nitrogen oxides A) The Sun maintains a steady temperature. A More sunspots indicate increased solar radiation. 10. D) We can study solar neutrinos. What is the evidence for the heliocentric model (sun is the center of the solar system) and evidence why the Geocentric model (the universe revolves around the earth) is wrong? 8. C) monitor changes in Earth's atmosphere. which of the folloing statements about ionization energy is true? D C) our mathematical models of the solar interior are fairly accurate. While the atmosphere exerts pressure, it is a negligible amount. Which of the following is not a characteristic of the 11-year sunspot cycle? The Sun generates energy primarily by nuclear fission. produces the auroras. In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot due to gravitational contraction. How can we best observe the Sun's chromosphere and corona? A) nuclear fission. Sunspots are most prevalent in an 11-year cycle; the number of sunspots peaks about every 11 years. 3. C) 10,000 years After passing through this layer, you will reach the radiation zone, where photons are engaged in a random dance as they are continuously absorbed and re-emitted by the hot gas there. sunspots can be up to 12 times larger than earth. (D). *b. They can spawn eruptive disturbances such as solar flares and coronal mass ejections (CMEs). C) Sunspots can be up to 12 times larger than Earth. The neutrinos are about twice as energetic on average than is. If an electric hair dryer uses 2,400 J of" energy in 2 s, what is its power? A "star" image separates into two distinct images periodically, c. Multiple Choice Which of the following is NOT true about Sunspots? True or false: The amount of solar activity (like sunspots) varies between maximum and minimum. Sunspots are the phenomena that occur in the photosphere of the sun that looks like dark spot than the rest of the sun's surface. The interior of the Sun is under such high pressure that it is a, 31. What is the only force that can overcome the repulsion between two positively charged nuclei to bind them into an atomic nucleus? D. They are surface disturbances caused by magnetic storms. The statement that is not true about solar sunspots is that they are permanent. Physics College answered Which of the following statements is NOT true about sunspots? E) the winding of magnetic field lines due to the Sun's rotation, What observations characterize solar maximum? B) It referred to the fact that neutrinos are extremely difficult to detect. C Sunspots can be up to 12 times larger than Earth. Nuclear power plants on Earth create energy in the same way as the Sun. the nebula caused by the supernova explosion of a massive star. C) No one understands how it can be possible for neutrinos to be produced in the Sun. 2. 2. D) The Sun has exhausted its supply of neutrinos. Why do sunspots appear dark in pictures of the Sun? Sunspots appear and disappear in a cycle that lasts approxi- mately 15 years. The core of the Sun is Which of the following best describes what would happen? Sunspots are actively rotating regions that contain strong magnetic fields and are usually found in pairs. Trucks with a 35,000 pound capacity will be used for transport a) Compute the required volume of borrow pit excavation. C) The chromosphere and corona are both best studied with visible light. *c. . The highest temperatures in the atmosphere occur in the. d. *b. Re-insert When sunspots occur, dark spots form on the surface of the sun. C) We have sent probes below the surface of the Sun. About six times as many neutrinos are observed than expected from, c. D E. The circle of illumination passes through both poles. 3,200 km (1,988 mi) above the Earth's surface. B) The density of the core would decrease, causing the core to cool off and expand. Sunspots are areas that appear dark on the surface of the Sun. An ice storm breaks a transmission line and interrupts electric power to a town. they C) The core would heat up, causing it to radiate so much energy that it would shrink even more. Solar sunspots are temporary features on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. B What is the common cause of sunspots, flares, and prominences? 34%. Which of the following is true regarding day length? As magnetic activity increases, the sunspots form lower down and in greater numbers. B 28. B) variations in the temperature of the photosphere an earthbound technique not used in modern satellites. Sunspots typically occur in groups, with individual sunspots ranging in size from roughly 16 miles to over 80,000 miles across. C B. A) The Sun is generating much less energy than we think it is. What are the appropriate units for the Sun's luminosity? no larger than about 1.4 times the mass of the Sun, otherwise. Sunspots have been observed by astronomers and recorded since the time of Galileo and they have been used to track solar activity. C) because they move at nearly the speed of light c. Humans have not sent a spacecraft into the interior of the Sun to confirm any models of the interior. How do we know how old the solar system is quizlet. atoms into one helium atom. D B B) observing X-ray images of the solar interior using satellites Which of the following characterizes Earth's revolution? One way to track the solar cycle is by counting the number of sunspots. Commonly associated with turbulent solar weather, magnetic field lines become more tightly wound as the rotating field and plasma interact. D) Nothing; this is an artist's rendering of the sun. white dwarf, black hole, neutron star, b. Which of the following is the phase of matter in the Sun? The diameter of a typical neutron star of 1 solar mass is predicted, 7. D Higher-mass stars run through their lives faster and have shorter, b. A mi padre y a m (nos-te) importan los actores de Hollywood. You can specify conditions of storing and accessing cookies in your browser. Which of the following statements about the sunspot cycle is not true? predicted D) trillions of degrees. The troposphere holds more than ________ percent of the atmospheric mass. The energy requirements are much larger than chemical reactions (i.e., fire) so this was then ruled out. D) Coronal mass ejections and other activity associated with the sunspot cycle can disrupt radio communications and knock out sensitive electronic equipment. We don't know, since their lifetimes are longer than the age of. Save my name, email, and website in this browser for the next time I comment. Which of the following sequences of stellar spectral classifications. 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. four regions: ranging from the troposphere to the thermosphere. Choose the best pair of words to complete the sentence. increases the temperature to the point where a new nuclear, fusion C) We can send a space probe into the Sun's photosphere. E) molecular hydrogen. A) Early experiments designed to detect solar neutrinos found them, but in fewer numbers than had been expected. The pressure exerted by the atmosphere is not great enough to crush them. A) Nuclei normally repel because they are all positively charged and can be made to stick only when brought close enough for the strong force to take hold. The source of energy that keeps the Sun shining today is C) Not all fusion reactions create neutrinos. Very hot material orbiting a black hole. Why do you turn down this excellent offer? 5. An air mass initially reflects the, As the Earth is a much cooler body than the sun, the Earth emits: A. ultraviolet radiation B. short-wave infrared radiation C. long-wave radiation D. visible light radiation, Select the correct map type or mapping method for the above map? Thus, the observations that confirm this prediction support the theory. the luminosity of stars reaches a peak at around 1 solar mass. C) collide. the monitoring of a distant object without physical contact. question Sunspots can vary in size from just a few hundred to over 100,000 kilometers across. B. Sunspot occurrence has a regular cycle, with an average of 11 years between maximums. C. C) They are extremely hot and emit all their radiation as X rays rather than visible light. Together, these two factors lead to sunspots appearing darker than the rest of the Sun. which of the following is not true of sunspots? Which of the following statements about solar sunspots is NOT true? A) the Sun is made of material that acts like a liquid acts on Earth. The overall result of the proton-proton chain is E Sunspots can produce flares and prominences. The light radiated from the Sun's surface reaches Earth in about 8 minutes. c. aims to reduce and eliminate all ozone depleting substances. causes lung irritation, asthma, and susceptibility to respiratory illness in humans. composition, temperature, and function. C a band running from upper right to lower left, 21. Hint 1. Therefore, we believe that our models are accurate if they can reproduce the characteristics of the Sun that we can observe. Similarly if the solar core were to decrease in temperature, the nuclear fusion rate would plummet and gravity would overcome thermal pressure and contract the core. a. they can be several times larger than earthb. A) The chromosphere is best observed with infrared telescopes and the corona is best observed with ultraviolet telescopes. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. Choose 5) Which of the following statements about the sunspot cycle isnottrue? If the Sun's core suddenly shrank a little bit, what would happen in the Sun? Why? A) Solar flares create neutrinos with magnetic fields. D) 6 H 1 He + energy. D) They are tiny black holes, absorbing all light that hits them. companion, A) Theoretical models predict that neutrinos should be produced in the Sun, but no neutrinos have ever been observed to be coming from the Sun. Expert Answer. c. The main cause of sunspots is the suns magnetic field. They have relatively lower temperatures than the brighter, background photosphere. 15. E) The sunspot cycle is the cause of global warming. D) 11 years ago. A) The number of sunspots peaks approximately every 11 years. C D) repel each other. The sunspot cycle, a huge effect, was not discovered until 1843 by Samuel Heinrich Schwabe.The German amateur astronomer was looking for a planet inside the orbit of Mercury and made careful daily drawings to track its passage across the face of the Sun. While the atmosphere exerts pressure, it is a negligible amount. 31)Option - C is . E) The Sun does not emit neutrinos. A E) The number of solar flares peaks about every 11 years. C) 5 billion years. . Electrostatic forces between the highly charged iron nuclei are, sufficient D) Energy is produced in the convection zone by nuclear fusion. producing excess energy and therefore will not produce the. Curious about the Sun, Galileo used his telescope to learn more. B 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. A) Experimental evidence indicates that the problem is solved and the expected number of solar neutrinos are indeed being produced by the Sun. decreases as mass increases and decreases beyond this limit. Most. B) When a star contracts in size, gravitational potential energy is converted to thermal energy. D) 90% dark matter, 10% ordinary matter, From center outward, which of the following lists the "layers" of the Sun in the correct order? Too few neutrinos are detected on Earth compared to the number the solar model predicts, The Language of Composition: Reading, Writing, Rhetoric, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses. c. E. More solar energy is radiated when sunspots are fewer. TrueFalse. diagram to shift slowly, 20. Which approach gives a more accurate estimate of. This will cause its position in the, Hertzsprung-Russell Sunspots also appear dark because they are composed primarily of dense, dark-colored photospheric and chromospheric material. Why does the Sun emit neutrinos? Detailed calculations show th at the value of, for the outermost electrons in Si and Cl atoms is 4.29+ and 6.12+, respectively. Sunspots are areas on the surface of the Sun that appear darker than their surrounding regions. And the cycle is 11 years, so in the next few years we'll be seeing more sunspots. B) We can make a computer model of the Sun's interior that allow us to predict the observable properties of the Sun. The borrow material that will be used to construct this fill is stiff clay. Which of the following is TRUE? are extremely red-shifted, hence they appear faint at. These are now known as the Galilean moons: Io, Ganymede, Europa and Callisto. The lifetimes of stars are too long to measure, so it is not. A Question there were no dark energy, the expansion of the universe would be: constant accelerating decelerating . 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. A) The rate at which fusion occurs would increase, leading to a contraction of the core, which would in turn cause the temperature to rise even further. on the answer sheet. Which of the following is not true about sunspots? D) It quickly meets an ordinary electron, forming an electron-positron pair that remains stable. C) nuclear fission C) areas of the corona where magnetic field lines project out into space, allowing charged particles to escape and form the solar wind This is because sunspots are slightly cooler than their surrounding regions; typically temperatures in sunspots are about 3000 Kelvin cooler than the average surface temperature of the Suns corona, which is around 60000 K. Sunspots are relatively cool due to their reduced concentrations of magnetic fields, which causes the plasma to become less dense. On its way to Earth, solar winds first encounter, The dominant wavelength emitted by Earth is. Daylength is longest on the summer solstice and is shortest on the winter solstice, D E) Sunspots can produce flares and prominences. A) 1,000,000 K. D) use computer models to predict interior conditions. Why are neutrinos so difficult to detect? Follow the model. E) 4 H 1 He + energy. 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) The Sun generates energy by fusing small nuclei into larger ones, while our power plants generate energy by the fission (splitting) of large nuclei. B) areas of the corona where magnetic field lines project into space, allowing charged particles to escape the Sun, becoming part of the solar wind E) attract one another. b. C) billions of degrees. away Two of the protons are ejected back into the solar material. Suppose you put two protons near each other. Another way that we can learn about the Sun is by capturing the particles in the solar wind that come from the Sun. A) they are regions where convection carries cooler material downward. D Magnetism is a physical quality mediated by a magnetic field that refers to the ability to create attracted and repulsive occurrences in other substances. 9. 26. The notion that ozone is being depleted as a result of human activity has little scientific evidence to support it. A) one year ago. E) The rate of fusion is not rising; it is actually decreasing over time. one continuous zone that functions as a whole. Additionally, according to the National Oceanic and Atmospheric Administration, the amount of energy that sunspots emit is so small that it is impossible to measure here on Earth. C. potassiumhas a lower ionizationenergy than sodium D. Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. evolution, in order of increasing mass? However, as geologists and paleontologists found evidence for an ancient Earth, astronomers realized that gravitational collapse could not be the dominant energy source of our Sun today. C) The Sun's entire magnetic field flip-flops at the end of each cycle (at solar minimum). is C) chemical reactions. a. stellar Glacial moraines show when and where previous episodes of glaciation occurred.

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