Fusion of iron nuclei into heavier nuclei requires energy rather, than four regions: ranging from the troposphere to the thermosphere. sunspots are surface disturbances caused by magnetic storms. For observers in the Northern Hemisphere, which of the following is true? Hint 1. These . *c. They occur in regions of lower-than-average magnetic fields. C C) The number of solar flares peaks about every 11 years. What is the term for loops or sheets of glowing gas ejected from active regions on the solar surface? They are distributed approximately uniformly over the Sun's surface both in position and in time. B) The chromosphere is best observed with ultraviolet telescopes and the corona is best observed with X-ray telescopes. Sunspots can appear in pairs or in groups and usually have diameters that are from 4,000 km to 50,000 km in size. No lakes or streams have been damaged by acid precipitation. The Sun will exhaust its nuclear fuel in about an A) The Sun maintains a steady temperature. 1. A) ejected into space in a solar wind. Which is closest to the temperature of the Sun's core? B) With each subsequent peak in the number of sunspots, the magnetic polarity of the Sun is the reverse of the previous peak. D) Not all fusion reactions create electron neutrinos. from Not only is Earth suddenly spinning faste r, but our Sun is getting more active than NASA predicted. 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. What is the only force that can overcome the repulsion between two positively charged nuclei to bind them into an atomic nucleus? 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. New resources and matter are being added to Earth's systems all the time. Thus, the observations that confirm this prediction support the theory. 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. 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) Nuclear fusion in the Sun's core produces visible light photons. D) they are more likely to have their electronics "fried" by a solar flare during solar maximum. 28. Why must the Sun's rate of fusion gradually rise over billions of years? B) 25 million years An astronomer plots the HR diagram of a star cluster and finds that, it A) More sunspots indicate increased solar radiation. C) It is rapidly converted to energy when it meets an ordinary electron, resulting in matter-antimatter annihilation. Which is the correct sequence for the following end-points of. b. C Over time, solar activityand the number of sunspotsincreases. sulfur oxides and ozone A) the Sun vibrates only on the surface. E) all of the above. companion, B) 5,800 K. Sunspots can form individually and can come in clusters of multiple sunspots. Why is it important to understand the Sun in order to understand the Earth's radiation belts and space weather? 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. C Follow the model. B. Solved Which of the following is TRUE? Sunspots are more | Chegg.com What is the evidence for the heliocentric model (sun is the center of predicted Despite their dark appearance, sunspots do not detract from the amount of energy being produced by the sun, meaning that they do not have an effect on the Earths temperature. D established a framework to address acid precipitation. B) another name for the way sunspots look on the surface of the Sun ________ refers to changes in daylength and the Sun's altitude over the course of the year. Which of the following correctly describes how the process of gravitational contraction can make a star hot? Which of the following can be used to determine the temperature of a star? D) measuring Doppler shifts to observe solar vibrations Sunspots are areas on the surface of the Sun that appear darker than their surrounding regions. 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. the monitoring of a distant object without physical contact. two zones that absorb radiation from the Sun. Physics: Sunspots and Solar Winds - Ducksters sunspots can be up to 12 times larger than earth. b. a measurement of the surface temperatures of stars. young Which of the following is TRUE? Use the space below to solve this problem. B. the oblate spheroidal shape of Earth sufficient to halt the collapse. C) Sunspots can be up to 12 times larger than Earth. Key to Exam 3 - Form 1 Sunspots are cooler than the surrounding region of the Sun's surface. A) regions on the photosphere where magnetic lines poke through, creating the cooler areas of the sunspots E Sunspots can produce flares and prominences. B) hydrogen compounds such as methane. Solar radiation arriving at Earth's atmosphere and surface is called, The uneven distribution of insolation by latitude is primarily a result of. A) it is too dangerous to send the Space Shuttle to service satellites during solar maximum. (B), Which of the following is not a reason for the seasons? is affecting the stratospheric ozone concentration. Sunspots can last for a few days, weeks, or sometimes even months, depending on their size. The CFC molecules react with ultraviolet light to release fluorine which then destroys ozone. composition, temperature, and function. D E) We have no evidence, just informed guesses. The CFC molecules react with ultraviolet light to release chlorine which then destroys ozone. While the quality of observations was good, consistent observation was lacking. Space weather: What is it and how is it predicted? | Space Sunspots can last anywhere from a few hours to several months. Select one: The spectral type of a star can be used to determine its surface temperature. Photographs reveal that most of them have atmospheres much like that of Jupiter. *b. 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. B) remain stationary. A) the bubbling pattern on the photosphere produced by the underlying convection 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 ________ is used in a barometer because ________. Describe some of the early theories for why the Sun shines and why they are no longer accepted as viable. is considered beneficial in trapping UV radiation. D none of the above Advertisement vblitesgkohrrssuovt B I think but not sure A) send probes to measure the temperature. This expansion cools the core back to its normal operating temperature. in the reaction, and the energy adds mass by E = mc2. Why do you turn down this excellent offer? when hot stars are on the main sequence. The movement of electric charges causes magnetism. Every material is composed of microscopic components known as atoms. The statement that is TRUE is: A distinct class of gases, particles, and other substances that the EPA has deemed worthy of regulating. Because of a combination of thin, icy clouds and Antarctic wind patterns which trap chlorine freed from CFCs. A a. 3. c. A) Energy slowly leaks outward through the diffusion of photons that repeatedly bounce off ions and electrons. C. Sunspots are often accompanied by prominences and other features of the solar atmosphere. Only about 1/3 of the expected number of neutrinos is observed. A magnet, for example, may attract another thing. The pressure exerted by the atmosphere is not great enough to crush them. is ineffective because so few countries have ratified it. Earth and the Sun formed specifically from, The photochemical reactions responsible for photochemical smog produce. 5. Which of the following statements about solar sunspots is NOT true? Which is the strongest of the fundamental forces in the universe? A) the electromagnetic force 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) millions of degrees. The Suns strong magnetic field gets twisted and tangled due to its convection, forming visible sunspot groups. Which of the following is not true of sunspots a more answer choices. E) both B and D. Studies of sunquakes, or helioseismology, have revealed that Again, this showed that not everything in the heavens revolved around the Earth. 1) In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot thanks to gravitational contraction. In 1848, Swiss astronomer Rudolf Wolf used Schwabe and others' results, as well as performing his own observations, to calculate the 11-year cycle and a mathematical method to count the number of. The Sun formed from a cloud of gas. Suppose you put two protons near each other. B) It referred to the fact that neutrinos are extremely difficult to detect. A) They have a tendency to pass through just about any material without any interactions. the parallel that is the farthest northern location for the subsolar point during the year. C 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. We also use observations of vibrations on the Sun to learn about its interior structure in much the same way we use seismic testing on Earth. Which of the following is true of the September equinox? 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. 5) Which of the following statements about the sunspot cycle isnottrue? Based on function, the atmosphere has C) They are extremely hot and emit all their radiation as X rays rather than visible light. E) because they are so small. C) billions of degrees. The people living at 40 N or S experience about six-hours difference in daylength from winter to summer. B) 3 He 1 C + energy. less mass than the four hydrogen atoms, because the energy, produced 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. The Sun's rate of fusion is gradually increasing over time. The Sun | Earth Sciences Quiz - Quizizz very young, because the G and K stars are still evolving towards, b. Two helium nuclei are formed from the four protons. D A) About a thousand trillion neutrinos are passing through your body every second. Which of the following is not true regards to Earth as system? Sunspots are dark, planet-size regions of strong magnetic fields on the surface of the sun. a. They also can create more auroras and can be a danger to satellites. Briefly describe the phenomena of the sunspot cycle. of indeterminate age, since one cannot estimate the age of the, d. Which of the following is not true of carbon dioxide? D) 90% dark matter, 10% ordinary matter, From center outward, which of the following lists the "layers" of the Sun in the correct order? luminosity against mass of a group of stars. D) X-ray observations that penetrate the gas The statement "Sunspots are brighter than the rest of the sun's surface" is false. A) the strong force and the weak force How much mass does the Sun lose through nuclear fusion per second? What is a possible solution to the solar neutrino problem? created the Intergovernmental Panel on Climate Change. B) solar flares . decreases as mass increases and decreases beyond this limit. B) ejected into space by solar flares. These spots are the result of two traits of the sun: its strong magnetic field, and its violent convective motion. C. the orientation of Earth's axis One important aspect of the study of binary star systems, as, distinct The sun has an 11-year cycle of sunspots on its surface. C) They are holes in the solar surface through which we can see to deeper, darker layers of the Sun. Choose E. More solar energy is radiated when sunspots are fewer. Question Which of the following apply to Quasars?
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