which of the following is not true of sunspots

Modelo A Mara (le-les) encantan las pelculas romnticas. Where are the most massive stars to be found in the main sequence of, b. The overall fusion reaction by which the Sun currently produces energy is Why do you turn down this excellent offer? You can do this by:. Sometimes the Sun's surface displays virtually no sunspots, while at other times its surface displays a relatively large number of sunspots. In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot due to gravitational contraction. Which the following is not true of sunspots? D Sunspots are surface disturbances caused by magnetic storms. 30 seconds. Which of the following cannot be attributed to the effects of Earth's rotation? A. increases the temperature to the point where a new nuclear, fusion Which of the following best describes where other forms of light are released? Sunspots can last for a few days, weeks, or sometimes even months, depending on their size. sufficient to halt the collapse. Which of the following is true of the ionosphere? They tend to cluster at high solar latitudes. As it contracted, its gravitational potential energy was converted to thermal energy. B) joules from a hot white dwarf, the core of the red giant. A) remain stationary. A) The sunspot cycle is very steady, so that each 11-year cycle is nearly identical to every other 11-year cycle. producing excess energy and therefore will not produce the. E. Earth's axial tilt, the timing of Earth's perihelion and aphelion (D). to force it to move in an orbit. one continuous zone that functions as a whole. A) 4 tons 13. Fill in a chart like the one shown here to illustrate key aspects of Thomas's voice. 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. A. Sunspots are cooler than the surrounding region of the Sun's surface. A) send probes to measure the temperature. (E). E) all of the above. d. Astronomy Chapter 9 Quiz B Flashcards | Chegg.com A "star" appears to become periodically dimmer for a few hours at, b. What two physical processes balance each other to create the condition known as gravitational equilibrium in stars? One can conclude that meteorologists will be able to improve their weather forecasts based on this information. E) It joins with a nearby neutron to form a proton. D) our mathematical models of the solar interior are fairly accurate. The diameter of a typical neutron star of 1 solar mass is predicted, 7. The surface of the Sun is a very busy place. Select the correct map type or mapping method for the above map. B) Neutrinos are created as a by-product of the proton-proton chain. Which of the following radioactive isotopes is used - Course Hero Sunspots on the surface of the Sun are regions of intense magnetic activity, appearing as dark spots in visible light due to the cooler temperatures found in these regions. Which of the following is true of chlorofluorocarbons? The cesium iodide (CsI) molecule has an atomic separation of 0.127 nm. absorbs most ultraviolet wavelengths. About six times as many neutrinos are observed than expected from, c. Nuclear power plants on Earth create energy in the same way as the Sun. A D) Energy is consumed in the convection zone by the creation of electrons and positrons. At solar maximum, the height of magnetic activity, we observe many sunspots and solar flares. Granulation or the mottled appearance of the whole solar surface is. A) because there are so rare A) regions on the photosphere where magnetic lines poke through, creating the cooler areas of the sunspots radiation but only line emissions, like a low density, 18. A A) the Sun vibrates only on the surface. Sunspots are regions on the suns surface that appear darker than their surroundings because they feature slightly cooler temperatures than their surroundings. 4). During this time, the number of spots can vary from a few to hundreds at a time. B) The Sun emits light of longer average wavelength. C) variations of the solar thermostat B They are often seen as areas of reduced brightness or black spots on the surface of the Sun. a disk-shaped nebula of dust and gas rotating around a relatively. D) Fusion can proceed only by the proton-proton chain, and therefore requires that protons come close enough together to be linked up into a chain. ozone and VOCs. A elements toward the bottom of a group periodic table generally have higher ionization energies than elements at the top of a group. The movement of electric charges causes magnetism. A high-mass star near the end of its life undergoes successive, cycles no larger than about 1.4 times the mass of the Sun, otherwise. This, process C) The brightening and darkening of the Sun that occurs during the sunspot cycle affects plant photosynthesis here on Earth. c. C) areas of the corona where magnetic field lines project out into space, allowing charged particles to escape and form the solar wind E) because they are so small. What problem have observers of solar neutrinos run into? B) about one thousand B) because they have no mass b. Although the speed of rotation varies from spot to spot, some spots may take as little as 14 days to make a complete rotation, while others can take up to several years. D) neutrinos from the solar core reach the solar surface easily. What was the major drawback of this idea? A They are distributed approximately uniformly over the Sun's surface both in position and in time. Submarine canyons are deep valleys at passive continental boundaries. The interaction between the magnetic fields and the solar plasma can cause sunspots to become unstable, leading to flares, prominences, and other solar eruptions. Which of the following is the best answer to the question, "Why does the Sun shine?" E) converting gravitational potential energy into electricity. mostly carbon dioxide and water vapor. Not only is Earth suddenly spinning faste r, but our Sun is getting more active than NASA predicted. C) attract each other. How gravity behaves at the densest part of the Sun c. Why the outer layers of the Sun are hotter than the surface d. Why sunspots often appear and disappear in pairs e. Why solar activity seems to follow a cycle The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. How do we know what goes on under the surface of the Sun? A) There's no such thing as a solar neutrino. We observe the Sun to exhibit a sunspot cycle over a period of 22 years, tied directly to its magnetic activity. The troposphere holds more than ________ percent of the atmospheric mass. Suppose that, for some unknown reason, the core of the Sun suddenly became hotter. If the distance between two objects is cut in half, what happens to the The lifetimes of stars are too long to measure, so it is not. E) The rate of nuclear fusion in the Sun peaks about every 11 years. A more modern hypothesis was that the Sun shone through the emission of thermal energy resulting from gravitational contraction, but this could only last for about 25 million years, far less than the age of Earth, before the Sun would have contracted to a point. Which of the following is not a method astronomers use to determine the physical conditions inside the Sun? 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. C) electromagnetic force Which of the following is not true about sunspots? Why do the tropics have a positive net radiation while the poles have a negative value? What is a small mass of tissue that is made up of Purkinje fibers, ganglion cells, and nerve fibers, that is embedded in the musculature of the right atrium, and that originates the impulses stimulating the heartbeat? What are coronal holes? They often appear in pairs or clusters. D) dust particles in the Sun that haven't been turned into plasma A) ejected into space in a solar wind. A) The number of sunspots peaks approximately every 11 years. four regions: ranging from the troposphere to the thermosphere. the troposphere and the stratosphere. A) It was important when the Sun was forming from a shrinking interstellar cloud of gas. After 11 years the Sun's magnetic polarity flips again, completing the 22-year period. They are cooler than their This problem has been solved! Select only one. Almost all elements heavier than hydrogen and helium were made inside stars. A) one year ago. Which of the following is NOT true about the differences between vector data model and raster data model?. C) radiation and elements such as carbon and nitrogen. The main cause of sunspots is the suns magnetic field. E) the interaction of the Earth's magnetic field with that of the Sun, What observations characterize solar maximum? Sunspots are actively rotating regions that contain strong magnetic fields and are usually found in pairs. a mixture of gases that behaves like single gas. D. They are surface disturbances caused by magnetic storms. A. Atmospheric pressure increases with altitude and is, therefore, lowest near the Earth's surface. This means either that our models of the Sun are not completely correct or that we don't understand neutrinos as well as we thought we did. b. ch 16 Pearson Questions Flashcards | Quizlet Explain the reasoning that led to our understanding of nuclear energy being the source of the Sun's light. As the core contracts, it heats up and the core returns to its normal operating temperature. C) They are all strongly influenced by magnetic fields on the Sun. E) all of the above. The "star" appears to wiggle in its path across our sky against, *d. They are cooler because their strong magnetic fields suppress convection and prevent hotter material from flowing into them. E) composed of iron. D) They are tiny black holes, absorbing all light that hits them. A) it is too dangerous to send the Space Shuttle to service satellites during solar maximum. What evidence then do we have to support our current ideas about the solar interior? 5) Which of the following statements about the sunspot cycle isnottrue? C. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. E) 4 H 1 He + energy. A) variations in the height of the solar surface With his observations of the phases of Venus, Galileo was able to figure out that the planet orbits the Sun, not the Earth as was the common belief in his time. C) The hydrogen gas in the Sun is balanced so that it never rises upward or falls downward. A. B) strong magnetic fields slow convection and prevent hot plasma from entering the region. 10. C) about one light year Use the space below to solve this problem. Show explanation. The Montreal Protocol A) at the same temperature and density as the surface. The Hertzsprung-Russell diagram is a plot of. We can learn about the densities and other characteristics of the various layers within the Sun by studying how the waves propagate throughout the Sun. From which region of the Sun does the solar wind originate? The relationship between mass and luminosity of stars on the main. D) a large change in the amount of visible light emitted by the Sun core temperatures reached at this stage of development is. B. a very small asteroidlike body orbiting the Sun. E) Radio waves can pass directly through the gas which allows us to see the core. MID-TERM #1 Chapters 1,2,3 Flashcards by Drew Holland | Brainscape B) The density of the core would decrease, causing the core to cool off and expand. B) solar flares D) The cycle is truly a cycle of magnetic activity, and variations in the number of sunspots are only one manifestation of the cycle. Which of the following best explains why the Sun's luminosity gradually rises over billions of years? Magnetism is the force that magnets exert when they attract or repel one another. a #2 pencil only. E) The Sun does not emit neutrinos. C) 50% hydrogen, 25% helium, 25% other elements What would happen to the core of the sun if its temperature rose slightly? The Sun's rate of fusion is gradually increasing over time. D) the Coriolis force C) Energy slowly leaks outward through the radiative diffusion of photons that repeatedly bounce off ions and electrons. A) watts One important aspect of the study of binary star systems, as, distinct They are hotter than the surrounding photosphere. C) The radiation produced by fusion reactions that is trapped in the core gradually raises the temperature, increasing the rate of fusion. What is granulation in the Sun? 26. As the formation of sunspots approaches the Sun's equator, the polarity of the Sun flips. B) Nuclei are attracted to each other by the electromagnetic force, but this force is only strong enough to make nuclei stick when they are very close together. with a precise period of 11.3 years. 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 somewhat irregular but always present cycle of build-up and, d. They are distributed approximately uniformly over the Sun's surface both in position and in time. And at minimum you have a minimum number of sunspots, and at maximum, a maximum. C) detecting solar neutrinos generated in the Sun's core They are a darker and cooler area than the rest of the sun and have a temperature of around 3,800 degrees Kelvin. Which of the following statements about neutrinos is not true? D) the strong force and the electromagnetic force. How much mass does the Sun lose through nuclear fusion per second? The statement that is TRUE is: aims to reduce and eliminate all ozone depleting substances. the monitoring of a distant object without physical contact. Solar neutrinos coming from the Sun have been detected, but in fewer numbers than predicted by theoretical models. Choose Ions and electrons are pushed apart by the electric forces, d. B) When a star contracts in size, gravitational potential energy is converted to thermal energy. Air pressure at sea level is approximately 1013.2 mb. What is the average temperature of the surface of the Sun? 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? D) trillions of degrees. the nebula caused by the supernova explosion of a massive star. Therefore, in conclusion, sunspots do not make the Earth hotter. Under these conditions, hydrogen atoms come so close together that they fuse. The subsolar point is at the Tropic of Capricorn (23.5 S). A) The Sun is generating much less energy than we think it is. C) The Sun initially began making energy through chemical reactions. C) The Sun's mass is about 300,000 times the mass of Earth. B) the Sun is made of atoms and molecules. Which of the following sequences of stellar spectral classifications. A) tunnels in the outer layers of the Sun that allow photons to escape and form the solar wind computer-based processing tool for analyzing geographic data. B) The churning gas is being stirred up by the strong solar wind. D) None; they are blocked by the Earth's atmosphere. The ESSAY. Solved Which of the following is TRUE? Sunspots are more | Chegg.com A) Fusion reactions in the Sun ceased a few hundred thousand years ago. D Sunspots can also be the precursors to solar flares, which can be dangerous to satellites, astronauts, and electrical grids on Earth. C) Like all objects, the Sun emits thermal radiation with a spectrum that depends on its temperature, and the Sun's surface temperature is just right for emitting mostly visible light. Approximately how many neutrinos pass through your body each second? 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. For example, by detecting solar neutrinos we can learn more about the fusion that is going on within the Sun's core. During a time interval of 1.5 s\mu ss in the rest frame of the muons, half of the muons present at the beginning of the interval decay. While the quality of observations was good, consistent observation was lacking. Key to Exam 3 - Form 1 The longest day of the year occurs on the December solstice. nitric acid and sulfuric acid, formed from nitrogen oxides and sulfur dioxide. What voltage will he encounter on the input side of the transformer? Solar activity causes the responses in the near-Earth space environment that produce changes in the radiation belts, so an understanding of how the Sun changes is directly relevant to space weather. A) As the Sun was forming, nuclear fusion reactions in the shrinking clouds of gas slowly became stronger and stronger, until the Sun reached its current luminosity. Describe a Laura y a Elin usando los verbos recprocos. Scientists believe sunspots are associated with the Suns erratic magnetic cycle, which typically takes 11 years to complete. (a) Dete The Sun appears to have a cycle of about 11 years during which it waxes and wanes. a verification of the Doppler equation for wavelength shift of. Sunspots are cooler areas on the suns surface that are relatively darker than the surrounding surface and are caused by intense concentration of magnetic fields. Together, these two factors lead to sunspots appearing darker than the rest of the Sun. Why is it important to understand the Sun in order to understand the Earth's radiation belts and space weather? Which of the following statements is NOT true about sunspots? At the height of this cycle, known as solar maximum, the Sun's magnetic poles flip. B) The Sun's mass is about 30 times the mass of Earth. Neutrinos from the core collide with gas atoms and prevent them, c. The photosphere is significantly cooler than temperatures at the sun's core, which can reach about 27 million F (15 million C) according to NASA. They also can create more auroras and can be a danger to satellites. B) Fusion in the Sun's core creates neutrinos. 38) Which of the following statements about the sunspot cycle is not true? A More sunspots indicate increased solar radiation. C) 10,000 years C. potassiumhas a lower ionizationenergy than sodium D. very young, because the G and K stars are still evolving towards, b. Sunspots. Which Of The Following Is A True Statement. B. Question: Which one of the following is NOT true? 10. B) The Sun's magnetic field, which plays a major role in the sunspot cycle, affects compass needles that we use on Earth. Astronomers create mathematical models that use the laws of physics, the Sun's observed composition and mass, and computers to predict internal conditions. They are cooler than the surrounding photosphere of the Sun. FAQ: How Does the Solar Cycle Affect Earth's Climate? | NASA When sunspots occur, dark spots form on the surface of the sun. How nuclear fusion turns hydrogen to helium b. another name for an electron that carries a positive charge. The people living at 40 N or S experience about six-hours difference in daylength from winter to summer. A) hydrogen compounds. New resources and matter are being added to Earth's systems all the time. D. Since 1959, the global concentration of CO2 has increased by 27%. B) The chromosphere is best observed with ultraviolet telescopes and the corona is best observed with X-ray telescopes. Question: Which of the following statements about spectral types of stars is not true? E) about 150 million kilometers (the size of an astronomical unit). ________ refers to changes in daylength and the Sun's altitude over the course of the year. C) core, radiation zone, convection zone, photosphere, chromosphere, corona It primarily absorbs harmful infrared wavelengths. Recommended Amendments to the Comprehensive Plan, sort the following manganese compounds by whether the cation is manganese ii or manganese iii. rmine the net force on the dam. D Oceanic crust spreads at mid-ocean ridges, creating new crust and slowly enlarging the ocean basin. E) molecular hydrogen. is on the last page, tear it free and turn it in separately. C) one thousand years ago. B) With each subsequent peak in the number of sunspots, the magnetic polarity of the Sun is the reverse of the previous peak. 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. According to modern science, approximately how old is the Sun? From the center outward, which of the following lists the "layers" of the Sun in the correct order? Which statement best describes the solar neutrino problem? Chapter 11 Flashcards | Quizlet C) Newtons c. A The core of the Sun is B) variations in the temperature of the photosphere Magnetism is caused by attraction when two items are brought together or repulsion when two objects are moved apart. which of the following is not true of sunspots? are extremely red-shifted, hence they appear faint at. a heavy, uncharged nuclear particle, easily detected. Sunspots are caused by groups of unbalanced magnetic fields on the suns surface. in your Student ID# and the FORM NUMBER of your, exam produces photochemical smog. C) by observing auroras here on Earth The spectral type of a star can be used to determine its colour. They collapse and become black holes. A) 5000 AD. A elements toward the bottom of a group periodic table generally have higher ionization energies than elements at the top of a group. ANSWER: Correct Chapter 11 Question 22 Part A Which of the following denotes the divisions of the geologic time scale in correct order of decreasing lengths of time . Why do sunspots appear dark in pictures of the Sun? Which of the following is not true of carbon dioxide? C) billions of degrees. - In this case, circle the word le. They change size b. 3. These dark spots, or sunspots, appear in clusters of various sizes and have a temperature that is about 1500C cooler than the suns surrounding surface. Two helium nuclei are formed from the four protons. 23. Which of the following best explains why nuclear fusion requires bringing nuclei extremely close together? Which of the following major perturbations can occur to a close, binary b. correlated equilibria) and extrinsic uncertainty in market economies (e.g. Why are neutrinos so difficult to detect? 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. Which of the following is an example of humans influencing solar energy or seasonality? 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 Astronomy Hw #19 Flashcards | Quizlet Sunspots can appear in pairs or in groups and usually have diameters that are from 4,000 km to 50,000 km in size. Greenhouse gases are by far the largest contributor to modern global warming. Which of the following is not true of sunspots? D) 400 million years. Which of the following best describes the current status of our understanding of the solar neutrino problem? Hint 1. Muons are created by cosmic-ray collisions at an elevation h (as measured in Earth's frame of reference) above Earth's surface and travel downward with a constant speed of 0.990c. The top of the Earth's atmosphere is approximately. C) Not all fusion reactions create neutrinos. C. It is critically important in regulating the temperature of the planet. the movement of gases in the corona. D Which of the following statements about the sunspot cycle is not true b. A) The Sun is generating energy other than by nuclear fusion. of indeterminate age, since one cannot estimate the age of the, d. INSTRUCTIONS:Fill Because they are cooler, they emit less thermal radiation per unit area and therefore look dark in contrast to brighter surrounding regions. A. an earthbound technique not used in modern satellites. B) It predicted that the Sun would shrink noticeably as we watched it, and the Sun appears to be stable in size. They are regions of reduced surface temperature, caused by concentrations of magnetic field flux that inhibit convection. D) 50 billion years. an elusive, subatomic particle having little or no mass, and. B Sunspots are temporary dark spots that appear on the surface of the Sun. This cluster is, *a. The Sun's surface seethes and churns with a bubbling pattern. It has a ratio of turns N1/N2N_1 / N_2N1/N2 of 100 to 1. Sunspots are cooler than the surrounding gas in the photosphere because. Experts are tested by Chegg as specialists in their subject area. C) It is rapidly converted to energy when it meets an ordinary electron, resulting in matter-antimatter annihilation. C. Day length varies more at the equator than at higher latitudes. (B) Sunspots look dark because they are cooler in temperature than the surrounding regions. Each atom contains electrons, which are charged particles. . 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? A) The number of sunspots peaks approximately every 11 years. D) Sunspots are surface disturbances caused by magnetic storms. A Briefly explain why sunspots are cooler than surrounding regions of the Sun and why they look dark in photos. No lakes or streams have been damaged by acid precipitation. Anne Danahy E) several hundred years ago. Every second, the Sun converts about 600 million tons of hydrogen into 596 million tons of helium. A) We can probe the interior of the Sun by studying the vibrations in its photosphere. A Which of the following statements is not true about the planets so far discovered around other stars? B 1. The notion that ozone is being depleted as a result of human activity has little scientific evidence to support it. A This site is using cookies under cookie policy . Convection, or the movement of gas or liquid caused by heat transfer, is not a cause of sunspots, but is instead impeded by the strong magnetic fields that cause sunspots. B) Astronomers create mathematical models that use the laws of physics, the Sun's observed composition and mass, and computers to predict internal conditions. This reduces the energy reaching the surface, and the spots appear much cooler and darker than their surroundings. They are cooler than the surrounding photosphere of the Sun. Abe Mizrahi, Edward E. Prather, Gina Brissenden, Jeff P. Adams, Jeffrey O. Bennett, Mark Voit, Megan O. Donahue, Nicholas O. Schneider, Foundations of Astronomy plus The Night Sky Planisphere - Latitude 30- 40, Chapter 14 Fire Detection and Alarm Systems,. Once a year c. Every 2 years d. Every 11 years e. Every 10,000 years 4. C) The Sun generates energy through nuclear reactions while nuclear power plants generate energy through chemical reactions. Sunspots are most prevalent in an 11-year cycle; the number of sunspots peaks about every 11 years. ANS: The length of the sunspot cycle is 11 years. 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 . Radio waves from GPS are strengthened in the ionosphere. Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs. The Sun's surface, as we see it with our eyes, is called the a. What is the solution to the solar neutrino problem? . method of calculating distance on a map. Is our sun going into hibernation? | Space C) our mathematical models of the solar interior are fairly accurate. D *b. white dwarf, black hole, neutron star, b. Why are neutrinos so difficult to detect? Sunspots are areas that appear dark on the surface of the Sun. Which of the following statements about solar sunspots is NOT true?
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