which of the following is not true of sunspots which of the following is not true of sunspots
sunspots are brighter than the rest of the E. The circle of illumination passes through both poles. 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. Sunspots are temporary dark spots that appear on the surface of the Sun. A star's lifetime does not depend on its mass. What is the common cause of sunspots, flares, and prominences? Thermonuclear fusion reactions in the core of the Sun convert four, hydrogen B) 3 He 1 C + energy. Neutrinos from the core collide with gas atoms and prevent them, c. E) all of the above. If they were hotter then they would be brighter since, by the blackbody law, Luminosity is proportional to Temperature 4. INSTRUCTIONS:Fill B) Fission reactions in the Sun have ceased. During periods of low solar activity just after solar minimum, what is true of the location and distribution of sunspots? two zones that absorb radiation from the Sun. 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%. more mass than the four hydrogen atoms, because energy is. The reaction of automobile exhaust and ultraviolet light The CFC molecules react with ultraviolet light to release fluorine which then destroys ozone. D) our mathematical models of the solar interior are fairly accurate. 9. C) The Sun rotates faster at the equator. a subjective determination of temperature. They are distributed approximately uniformly over the Sun's surface both in position and in time. 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. E) several hundred years ago. B Magnetism is caused by attraction when two items are brought together or repulsion when two objects are moved apart. C) sun spots B has a charge of +2. Sunspots are dark patches on the surface of the Sun caused by strong concentrations of magnetic fields. Where are the most massive stars to be found in the main sequence of, b. "Recent" events are those that date back tens of thousands of years. D) dust particles in the Sun that haven't been turned into plasma E) The Sun is generating energy other than by nuclear fusion. a. B) Nuclear reactions in the Sun become more efficient with time, so that each fusion reaction releases more energy when the Sun is old than when it is young; this in turn raises the Sun's luminosity. ________ is used in a barometer because ________. As the cycle ends, it . A star with spectral type K is cooler than a star with spectral type G. The longest day of the year occurs on the December solstice. D to overcome the collapse and stabilize the stellar, d. An ice storm breaks a transmission line and interrupts electric power to a town. Experts are tested by Chegg as specialists in their subject area. 26. . We also provide a link between extrinsic uncertainty arising in games (e.g. c. B. ionization energy is the amount of energy used to add an electron to an atom. All latitudes on Earth, except the Equator, experience unequal daylengths. 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 . C) The hydrogen gas in the Sun is balanced so that it never rises upward or falls downward. Show explanation. A) building mathematical models that use the laws of physics What was the major drawback of this idea? D) only by using sophisticated computer models, because there are no observational ways of measuring magnetic field strength. B) core, convection zone, radiation zone, corona, chromosphere, photosphere thermonuclear fusion of hydrogen in the Sun's surface layers, *d. 31)Option - C is . begins to evolve toward the red giant phase? Two of the protons are converted into neutrinos. The source of energy that keeps the Sun shining today is They exert pressure outward, counterbalancing atmospheric pressure. predicted On a power pole down the block is a transformer designed to step down the voltage for household use. E) The rate of nuclear fusion in the Sun peaks about every 11 years. produces photochemical smog. 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. Which of the following is true of the Sun's electromagnetic spectrum? four regions: ranging from the troposphere to the thermosphere. What happens to the positron? C) The Sun generates energy through nuclear reactions while nuclear power plants generate energy through chemical reactions. D) a stream of charged particles flowing outward from the surface of the Sun. A) Early experiments designed to detect solar neutrinos found them, but in fewer numbers than had been expected. They are caused by intense magnetic fields that disrupt the flow of plasma, which is a superheated, electrically charged state of matter formed from the gases of the Sun. which of the following is not true of sunspots? A) Experimental evidence indicates that the problem is solved and the expected number of solar neutrinos are indeed being produced by the Sun. Hydrogen fusion in the Sun requires a temperature (in Kelvin) of E) both B and D. Studies of sunquakes, or helioseismology, have revealed that B) ten years ago. D) The higher temperature would not affect the fusion rate but would cause the core to expand and cool until the temperature returned to normal, with the core at a new, slightly larger size. 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. very young, because the G and K stars are still evolving towards, b. It occurs in large amounts in the atmosphere relative to other gases, such as nitrogen and oxygen. A) The Sun is generating energy other than by nuclear fusion. Which of the following is not true regards to Earth as system? It results from chemical reactions with chlorine derived from CFCs. B. B) wave motions in the solar interior D) orange A Yes, sunspots are an indication of increased activity on the Suns surface. True False Question 24 (2 points) Which of the following is the correct order for the stages of evolution of a low-mass star, like the Sun? *b. 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. Which of the following correctly compares the Sun's energy generation process to the energy generation process in human-built nuclear power plants? E) Nothing; mass-energy is conserved. A) 6 H becomes 1 He + energy. D 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. A) More sunspots indicate increased solar radiation. Re-insert (Image credit: SOHO) The first of these refers to strong disturbances to Earth's magnetic field caused by ejected solar. C B) corona a gas shell, the atmosphere of a red giant star, slowly expanding. E) green. What is the typical length of time between sunspot minimums and sunspot maximum; that is, what is the typical length of the "sunspot cycle"? Nuclear power plants on Earth create energy in the same way as the Sun. A) It was important when the Sun was forming from a shrinking interstellar cloud of gas. The "star" appears to move in a straight line against a, a. Iron nuclei are so large that they occupy all remaining space and, c. D) Gravitational contraction involves the generation of heat by chemical reactions, much like the burning of coal. companion, Which is closest to the temperature of the core of the Sun? D) a few hundred thousand years ago. New resources and matter are being added to Earth's systems all the time. 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,. Melt from the subducting plate rises to the surface, erupts through the . B. composition, temperature, and function. B) The Sun emits light of longer average wavelength. D) structure within sunspots. A) an imbalance in the operation of the solar thermostat 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. the Sun and energy output per unit area of a star depends on the, 4th radiation but only line emissions, like a low density, 18. 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. A) about 1023 1. C) chemical reactions The corona and chromosphere are hotter than the photosphere. The photosphere is relatively thin compared to the other atmospheric regions. Sunspots are most prevalent in an 11-year cycle; the number of sunspots peaks about every 11 years. B) repel one another. C) electromagnetic force Which of the following is not true of sunspots? and Which of the following statements is not true? What proportion of climate scientists has concluded that humans are the primary driver of today's climate warming? is not associated with transportation 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 . A) variations in the height of the solar surface sulfur oxides and ozone C) The rate of nuclear fusion in the Sun peaks about every 11 years. computer-based processing tool for analyzing geographic data. The overall fusion reaction by which the Sun currently produces energy is C) collide. What is the only force that can overcome the repulsion between two positively charged nuclei to bind them into an atomic nucleus? Main sequence, red giant, planetary nebula, white dwarf: Main sequence, planetary nebula, red giant, white dwarf. The stars of the Milky Way d. B. ionization energy is the amount of energy used to add an electron to an atom. C) It predicted that the Sun could shine for about 25 million years, but geologists had already found that Earth is much older than this. Very hot material orbiting a black hole. Briefly describe what you will see as you descend. B) Higher temperature would cause the rate of nuclear fusion to rise, which would increase the internal pressure, causing the core to expand and cool until the fusion rate returned to normal. Why does the surface of the Sun appear to have a sharp edge? A) solar neutrinos They usually appear in groups in pairs, or in clusters called active regions, and can last anywhere from days to months. finally E. Atmospheric pressure is greatest in the mesosphere.
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