in your Student ID# and the FORM NUMBER of your, exam more sunspots indicate increased solar radiation. As it contracted, its gravitational potential energy was converted to thermal energy. (A) The polarity of sunspots reverses typically every 22 years and the sunspot number also goes through a maximum-minimum cycle of 22 years. They have relatively lower temperatures than the brighter, background photosphere. B) plasma. Which of the following statements is NOT true for sunspots? 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. B) The visible light comes from energy level transitions as electrons in the Sun's hydrogen atoms jump between level 1 and level 2. A hot-air home heating system takes 500 ft3/min (cfm) air at 14.7 psia, 65 F into a furnace, heats it to 130 F, and delivers the flow to a square duct 0.5 ft by 0.5 ft at 15 psia. radiation but only line emissions, like a low density, 18. Which of the following regarding atmospheric pressure is true? D) They are tiny black holes, absorbing all light that hits them. B ~ Very strong energy source production ofjets formed in isolated areas varies on extremely long timescales strong radio source 1/ point 1/ point 1/ point. These spots are the result of two traits of the sun: its strong magnetic field, and its violent convective motion. B) It is the primary energy generation mechanism in the Sun today. B) When a star contracts in size, gravitational potential energy is converted to thermal energy. On its way to Earth, solar winds first encounter, The dominant wavelength emitted by Earth is. We observe the Sun to exhibit a sunspot cycle over a period of 22 years, tied directly to its magnetic activity. a. Which of the following processes is involved in the sunspot cycle? D) areas in the corona that allow us to see through to the photosphere Which of the following is not a method astronomers use to determine the physical conditions inside the Sun? Yes, sunspots are an indication of increased activity on the Suns surface. b. A repairman climbs the pole. B) the linkage of numerous protons into long chains. A) Energy is produced in the convection zone by thermal radiation. prominences A. A) The sunspot cycle is very steady, so that each 11-year cycle is nearly identical to every other 11-year cycle. B) solar flares hotter. What are coronal holes? D) convection zone (PDF) Robustness of sunspot equilibria - Academia.edu A) collide. 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. The statement "Sunspots are brighter than the rest of the sun's surface" is false. A. A. D) The Sun generates energy through fission while nuclear power plants generate energy through fusion. The source of energy that keeps the Sun shining today is Describe a Laura y a Elin usando los verbos recprocos. 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 Which of the following is not true of sunspots? 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. Which of the following statements about solar sunspots is NOT true? 10. Which of the following statements about the sunspot - Course Hero 2. A Which of the following is not true of sunspots? A) 4 billion years Reset Help deep-ocean trenches 1. D) We see many sunspots on the surface of the Sun. B) a slight gravitational contraction of the Sun C No, sunspots are not caused by convection. Which of the following is an example of humans influencing solar energy or seasonality? A) nuclear fission. Select one: The spectral type of a star can be used to determine its surface temperature. The Sun formed from a cloud of gas. (C). The energy requirements are much larger than chemical reactions (i.e., fire) so this was then ruled out. . B 1). When we say that the Sun is a ball of plasma, we mean that C) Nuclei have to be very hot in order to fuse, and the only way to get them hot is to bring them close together. away D) core, corona, radiation zone, convection zone, photosphere, chromosphere, What are the appropriate units for the Sun's luminosity? Suppose you put two protons near each other. B) They are all shaped by the solar wind. Which of the following choices is not a way by which we can study the inside of the Sun? D) trillions of degrees. *c. 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%. 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. A It is intrinsically fainter than the Sun. answer choices. The poles have the smallest variation in summer and winter day lengths. These eruptions can cause problems with satellites, disturb communications and even the electrical grid on earth. Glacial moraines show when and where previous episodes of glaciation occurred. E) they are caused by processes similar to those that create earthquakes, Imagine that you are trying to stop neutrinos with a lead shield. aims to reduce and eliminate all ozone depleting substances. C) the wind that causes huge arcs of gas to rise above the Sun's surface During sunspot minimum, sunspots are far less frequent and the Sun may appear much more uniform in brightness. Which of the following best describes the current status of our understanding of the solar neutrino problem? What keeps the Sun's outer layers from continuing to fall inward in a gravitational collapse? A) send probes to measure the temperature. geog exam 1 Flashcards | Quizlet 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. B. the oblate spheroidal shape of Earth C) about a thousand trillion How do we know how old the solar system is quizlet. ________ refers to changes in daylength and the Sun's altitude over the course of the year. B) wave motions in the solar interior Yes, sunspots do circulate around the Sun. This site is using cookies under cookie policy . While the atmosphere exerts pressure, it is a negligible amount. method of calculating distance on a map. D B) about 700,000 kilometers (the radius of the Sun) Select the correct map type or mapping method for the above map. Based on its surface temperature of 5,800 K, what color are most of the photons that leave the Sun's surface? computer-based processing tool for analyzing geographic data. The spectral class of the star Enif is K2 while that of the Sun is, G2. B) because they have no mass C) We have learned that the Sun's interior undergoes fusion at a lower rate than we had expected, and that is why we had observed fewer neutrinos than expected. very young, because the G and K stars are still evolving towards, b. If an electric hair dryer uses 2,400 J of" energy in 2 s, what is its power? Sunspot activity is often observed and studied to gain important data about the Suns atmosphere and the local magnetic environment of the Solar system. A to theoretical models of the Sun. B) gravitational force and outward pressure B C) chromosphere the monitoring of a distant object without physical contact. D) X-ray observations that penetrate the gas Physics: Sunspots and Solar Winds - Ducksters is affecting the stratospheric ozone concentration. The relationship between mass and luminosity of stars on the main. b. Hundreds of lakes are incapable of supporting life due to high acidity. Which of the following is true of the Sun's electromagnetic spectrum? E) both B and D. Studies of sunquakes, or helioseismology, have revealed that Magnetic fields D. Since 1959, the global concentration of CO2 has increased by 27%. A magnet is an item with magnetic qualities. A D) only by using sophisticated computer models, because there are no observational ways of measuring magnetic field strength. No lakes or streams have been damaged by acid precipitation. B) Earth's upper atmosphere tends to expand during solar maximum, exerting drag on satellites in low orbits. C Solved True or false: The amount of solar activity (like - Chegg 13. Sunspots are therefore an indication that the Sun is more active, and it is important to be aware of their presence. (E). Once a month b. B) The Sun emits light of longer average wavelength. d. C) the Sun generates energy by nuclear fusion. E) Nothing; mass-energy is conserved. A. apparent brightness against intrinsic brightness of a group of. B) the strong wind that blows sunspots around on the surface of the Sun The Sun generates energy primarily by nuclear fission. Sunspots are caused by groups of unbalanced magnetic fields on the suns surface. 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. A) because there are so rare 30 seconds. A Which of the following is true with respect to the. 13. A) The number of sunspots peaks approximately every 11 years. Which of the following best describes where other forms of light are released? E) lumps of denser material in the Sun, What are coronal holes? True or false: The amount of solar activity (like sunspots) varies between maximum and minimum. from single stars, is that it provides, a. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. Sunspots are dark spots that appear on the surface of the sun and typically live for days to weeks. B. Sunspot occurrence has a regular cycle, with an average of 11 years between maximums. C) Sunspots can be up to 12 times larger than Earth. 30. sunspots are surface disturbances caused by magnetic storms. The CFC molecules react with ultraviolet light to release carbon which then destroys ozone. According to modern science, approximately how old is the Sun? A) The sunspot cycle strongly influences Earth's weather. B) several hundred thousand years ago. A Cepheid variable star with a period of a few days. The lifetimes of stars are too long to measure, so it is not. C) yellow C) billions of degrees. They often occur in pairs of opposite magnetic polarity. What is the common cause of sunspots, flares, and prominences? E) The Sun is generating energy other than by nuclear fusion. E) It joins with a nearby neutron to form a proton. 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. C) one thousand years ago. Sunspots are dark patches that appear on the Suns surface as a result of powerful magnetic activity. d. E) a million years ago. C) areas of the corona where magnetic field lines project out into space, allowing charged particles to escape and form the solar wind 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. the movement of gases in the corona. These heated the interior enough to allow gravitational contraction and nuclear fusion to occur. Which of the following sequences is arranged in order from shorter wavelength to longer wavelength? . Submarine canyons are deep valleys at passive continental boundaries. E) neutrinos from the solar core reach the solar surface easily. D) neutrinos from the solar core reach the solar surface easily. a. They are regions of reduced surface temperature, caused by concentrations of magnetic field flux that inhibit convection. D) 400 million years. Air consists of? It occurs in large amounts in the atmosphere relative to other gases, such as nitrogen and oxygen. Solved Which of the following statements about spectral - Chegg At the height of this cycle, known as solar maximum, the Sun's magnetic poles flip. Sunspots are cooler than the surrounding gas in the photosphere because. It consists of gamma ray, X-ray, ultraviolet, visible, and infrared wavelengths. B) joules How does the Sun generate energy today? Imagine you are plunging into the Sun, starting from Earth. 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. a subjective determination of temperature. 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. 480 km (300 mi) above the Earth's surface. As this question implies, safety precautions must be taken in the use of home generators and during power failures in general. 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. A) building mathematical models that use the laws of physics 8. If the distance between two objects is cut in half, what happens to the aims to reduce and eliminate all ozone depleting substances. D five regions beginning with the outermost thermosphere. Sometimes the Sun's surface displays virtually no sunspots, while at other times its surface displays a relatively large number of sunspots. B) Energy is produced in the convection zone by nuclear fusion. E) The rate of nuclear fusion in the Sun peaks about every 11 years. E) attract one another. C C) the Sun consists of gas in which many or most of the atoms are ionized (missing electrons). Day-length decreases from the winter solstice until the vernal equinox, when it begins to increase. when surface temperatures are lower than warmer overlying air. What is the average temperature of the surface of the Sun? What proportion of climate scientists has concluded that humans are the primary driver of today's climate warming? Humans have not sent a spacecraft into the interior of the Sun to confirm any models of the interior. Why does the Sun emit neutrinos? B Space weather: What is it and how is it predicted? | Space evolution, in order of increasing mass? By what process does the Sun generate energy? This twisted and tangled magnetic field causes a concentration of magnetic flux near the surface of the Sun, which in turn reduces the temperature of the region and produces a darker area, resulting in a sunspot. D) The Sun gets heavier as it gets older, and the stronger inward pull of gravity increases the fusion rate. D) Not all fusion reactions create electron neutrinos. Hundreds of lakes are incapable of supporting life due to high acidity. Why do sunspots appear dark in pictures of the Sun? a gas shell, the atmosphere of a red giant star, slowly expanding. Instead he found that the number of sunspots varied with a . New resources and matter are being added to Earth's systems all the time. 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. 3. Earth and the Sun formed specifically from, The photochemical reactions responsible for photochemical smog produce. C) Newtons A) at the same temperature and density as the surface. Which of the following radioactive isotopes is used to date very recent events? B) 4 million tons Which of the following is not true about solar flares - Course Hero C Another idea was that the Sun shone through chemical burning (like a conventional fire on Earth), but this was dismissed because it could not generate and sustain sufficient brightness. 3,200 km (1,988 mi) above the Earth's surface. D) Nothing; this is an artist's rendering of the sun. will collapse under their own gravity? b. 33. C) the strong force Earth's curvature, which presents varied angles to parallel solar rays. which of the following is not true of sunspots? 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. is considered beneficial because of the production of O3. D) Neutrinos rarely, if ever, interact with your computer. d. They increase and decrease in number, relatively regularly. We also provide a link between extrinsic uncertainty arising in games (e.g. A A The Sun Is Asleep. Deep 'Solar Minimum' Feared As 2020 - Forbes Laboratory experiments and theory show that fusion produces neutrinos. from The Sun's surface, as we see it with our eyes, is called the How can we measure the strength of magnetic fields on the Sun? Explain the reasoning that led to our understanding of nuclear energy being the source of the Sun's light. A) the bubbling pattern on the photosphere produced by the underlying convection by theoretical models of the Sun. which of the folloing statements about ionization energy is true? Expert Answer. C. The tropopause serves as a buffer against the pressure exerted by the atmosphere. 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) The electron neutrinos created in the Sun's core change into another type of neutrino that we did not detect. D What would happen to the core of the sun if its temperature rose slightly? Which of the following statements is NOT true for sunspots? E) They emit light in other wavelengths that we can't see. A More sunspots indicate increased solar radiation. C) 5 billion years. impossible, because one cannot have cool stars above the main. C) The Sun's mass is about 300,000 times the mass of Earth. A) They are too cold to emit any visible light. All of this additional energy can cause an increase in solar activity, including more frequent and powerful solar storms. Main sequence stars White dwarfs Red dwarfs Red giant stars Sun-like stars QUESTION 31 Which of the following statements about sunspots is NOT true? Which of the following cannot be attributed to the effects of Earth's rotation? A) The Sun becomes much brighter. Each atom contains electrons, which are charged particles. affects temperatures. As the formation of sunspots approaches the Sun's equator, the polarity of the Sun flips. b. (It's even "on sale"!) Which of the following is true of the September equinox? The stars of the Milky Way 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 . Choose A) helium, gamma rays, and neutrinos. E. CO2 is a by-product of life processes. B) Neutrinos are created as a by-product of the proton-proton chain. 9. the Sun and energy output per unit area of a star depends on the, 4th how (or if) their lifetimes depend on mass. Which of the following conclusions can be drawn about Enif from. Sunspots are concentrations of magnetic field in the photosphere of the Sun which appear as dark spots on the Suns surface. Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. The transfer of matter from one star to its companion. B) They are holes in the solar surface through which we can see through to deeper, darker layers of the Sun. A) It was important when the Sun was forming from a shrinking interstellar cloud of gas. If one fourth of the original muons reach Earth before decaying, about how big is the height h? Which of the following best explains why nuclear fusion requires bringing nuclei extremely close together? a measurement of the composition (abundances of elements) inside. D) radioactive elements like uranium and plutonium. A) Contracting objects cool down rather than heat up. Removing Sunspots on Face: Treatment and At-Home Remedies - Healthline Sunspots are areas on the surface of the Sun that appear darker than their surrounding regions. Magnetism is a physical quality mediated by a magnetic field that refers to the ability to create attracted and repulsive occurrences in other substances. B) variations in the temperature of the photosphere What evidence then do we have to support our current ideas about the solar interior? *c. They occur in regions of lower-than-average magnetic fields. A) strong force Which of the following statements about solar sunspots is NOT true? D) Gravitational contraction involves the generation of heat by chemical reactions, much like the burning of coal. Show explanation. They are magnetic storms. C) They are regions nearly devoid of gas. Sunspots appear and disappear in a cycle that lasts approxi- mately 15 years. they are brighter than the rest of the sun's surfaced. Main sequence, red giant, planetary nebula, white dwarf: Main sequence, planetary nebula, red giant, white dwarf. C) Not all fusion reactions create neutrinos. Which part of the Hertzsprung-Russell diagram is occupied by, c. Which of the following statements about sunspots is false? a. They are Natural precipitation typically falls between pH 7.5 and 8.0. A mi padre y a m (nos-te) importan los actores de Hollywood. They change size b. A Energy from the core of the Sun first travels slowly through the convection zone and then much faster through the radiation zone. B) It is physically impossible to generate heat simply by making a star shrink in size. B The Sun's rate of fusion is gradually increasing over time. Galileo's Daughter - Wikipedia B Which of the following correctly describes how the process of gravitational contraction can make a star hot? 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. The overall fusion reaction by which the Sun currently produces energy is B) The Sun's mass is about 30 times the mass of Earth. D) nuclear fusion of helium to carbon. D) Both have approximately the same mass. D) join together to form a deuterium nucleus. The cesium iodide (CsI) molecule has an atomic separation of 0.127 nm. Briefly explain why sunspots are cooler than surrounding regions of the Sun and why they look dark in photos. A) More sunspots indicate increased solar radiation. Which of the following correctly compares the Sun's energy generation process to the energy generation process in human-built nuclear power plants? Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs. D) The core would heat up, fusion rates would increase, and the core would re-expand. From which region of the Sun does the solar wind originate? Key to Exam 3 - Form 1 D) 37,000 K. What is the solar wind? E) several hundred years ago. - In this case, circle the word le. B) about one thousand Sunspots are generally cooler than the surrounding photosphere because they are formed from regions of disrupted plasma flow. (b) Find the frequency of the photon absorbed in the J = 1 to J = 2 transition. The dark spots are caused by regions of intense magnetic field, which are up to 2,500 times greater than the field of the earth. another name for an electron that carries a positive charge. Sunspots and Solar Flares | NASA Space Place - NASA Science for Kids B) the gravitational force What is the primary source of energy for the Sun? C) Our understanding of fusion in the Sun suggested that neutrinos should be destroyed before they arrive at Earth, yet neutrinos were being detected. INSTRUCTIONS:Fill They appear dark because they are cooler than other parts of the Sun's surface. The core of the Sun is at a temperature of about 20,000 K. The proton-proton chain converts four hydrogen nuclei into one helium nucleus. absorbs visible light wavelengths. D B) The magnetic polarity of the Sun reverses approximately every 11 years. A) The Sun rotates faster at its poles. The Sun Is Now More Active Than NASA Predicted. It Could Be In Its An ice storm breaks a transmission line and interrupts electric power to a town. B) The likelihood of seeing solar prominences or solar flares is higher when sunspots are more common and lower when they are less common. Which of the following statements about neutrinos is not true? You can do this by:. C) The brightening and darkening of the Sun that occurs during the sunspot cycle affects plant photosynthesis here on Earth. Daylength is longest on the summer solstice and is shortest on the winter solstice, D (E). C) We do not know how to detect electron neutrinos. They exert pressure outward, counterbalancing atmospheric pressure. Which of the following is NOT a correct statement about sunspots? C) our mathematical models of the solar interior are fairly accurate. d. What do we mean when we say that the Sun is in gravitational equilibrium? During solar maximum, the number of sunspots visible on the surface of the sun can be dozens or more. After observing the Earth's weather patterns and the 11-year sunspot B. composition, temperature, and function. Most. D) Sunspots are surface disturbances caused by magnetic storms. Ozone in the lower troposphere B) millions of degrees. Acid deposition is deposition that measures more than 7.0 on a pH scale. C) Energy is transported outward by the rising of hot plasma and the sinking of cooler plasma. Galileo's Daughter: A Historical Memoir of Science, Faith, and Love is a book by Dava Sobel published in 1999. B) Fusion in the Sun's core creates neutrinos. Where are the most massive stars to be found in the main sequence of, b. In when hot stars are on the main sequence. What is a possible solution to the solar neutrino problem? E) Sunspots can produce flares and prominences. luminosity against mass of a group of stars. 10 km (6.21 mi) above the Earth's surface. Which of the following statements about the sunspot cycle is not true? A) They all have about the same temperature. they are surface disturbances caused by magnetic storms A c. they are brighter than the rest of the sun's surface 10 Q Solved Which one of the following is NOT true? (A) The - Chegg Question there were no dark energy, the expansion of the universe would be: constant accelerating decelerating . Which of the following is not true of carbon dioxide? Which of the following can be used to determine the temperature of a star? neutron star, black hole, white dwarf, 29. When the Sun is near solar maximum, it undergoes a much higher rate of violent activity in the form of solar flares. D Sunspots are surface disturbances caused by magnetic storms. D. It results from the burning of fossil fuels. A) The number of sunspots peaks approximately every 11 years. a. C. potassiumhas a lower ionizationenergy than sodium D. D. Air pressure at sea level is approximately 1013.2 mb. E) The sunspot cycle is the cause of global warming. The people living at 40 N or S experience about six-hours difference in daylength from winter to summer. A) the electromagnetic force A) The core would cool off and continue to shrink as its density increased. B) 600 tons 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. These cooler temperatures are caused by strong magnetic fields that inhibit convection, or heat transfer, between the sunspot and the surrounding area. B) ejected into space by solar flares. PDF ASTR1102-002 Practice Questions for Exam #2 View full document. How is the sunspot cycle directly relevant to us here on Earth? Therefore, we believe that our models are accurate if they can reproduce the characteristics of the Sun that we can observe. Which the following is not true of sunspots? 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. B) As the Sun was forming, gravitational contraction increased the Sun's temperature until the core become hot enough for nuclear fusion, which ever since has generated the heat that makes the Sun shine.
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