The corona is even shaped differently, streaming more from the sides of the Sun instead of forming a more spherical shape around the Sun, as when the magnetic field is weaker. On its way to Earth, solar winds first encounter, The dominant wavelength emitted by Earth is. It is intrinsically fainter than the Sun. D) The solar neutrino problem remains as perplexing as ever, and indeed makes everything we think we know about stars suspect. Which statement best describes what was called the solar neutrino problem? The sunspot cycle is very steady, so that each 11-year cycle is nearly identical to every other 11-year cycle. B What happens to energy in the convection zone of the Sun? Why are neutrinos so difficult to detect? the answer sheet into the test packet and turn both in. It primarily absorbs harmful infrared wavelengths. Not only is Earth suddenly spinning faste r, but our Sun is getting more active than NASA predicted. Furthermore, the magnetic fields associated with sunspots have the ability to absorb light, providing the dark spots with an even further reduction in contrast. answer choices. contains hot B-type stars on the main sequence and cooler G- and, K-type Instead he found that the number of sunspots varied with a . The highest temperatures in the atmosphere occur in the. A hydrogen nucleus (a proton) has a charge of +1 and a helium, nucleus A) the Sun is made of material that acts like a liquid acts on Earth. sunspots can be up to 12 times larger than earth. 13. d. in the reaction, and the energy adds mass by E = mc2. The light radiated from the Sun's surface reaches Earth in about 8 minutes. D) The Sun becomes much brighter. The beginning of a solar cycle is a solar minimum, or when the Sun has the least sunspots. A mi padre y a m (nos-te) importan los actores de Hollywood. a gas shell, the atmosphere of a red giant star, slowly expanding. Question: Which one of the following is NOT true? D A) helium, gamma rays, and neutrinos. The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion. 2. A sunspots are brighter than the rest of the B) With each subsequent peak in the number of sunspots, the magnetic polarity of the Sun is the reverse of the previous peak. B) ten years ago. more sunspots indicate increased solar radiation. Air consists of? What two pollutants react with water to produce acid rain? a mixture of gases that behaves like single gas. D a contracting spherical cloud of gas surrounding a newly formed, *d. D) 6 H 1 He + energy. A) strong force a subjective determination of temperature. 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? Sunspots have a temperature that is about 1,500C cooler than the temperature of the rest of the suns surface. For observers in the Northern Hemisphere, which of the following is true? four regions: ranging from the troposphere to the thermosphere. 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. Which of the following characterizes Earth's revolution? Which of the following is not true regards to Earth as system? Choose the best pair of words to complete the sentence. the troposphere and the stratosphere. Briefly describe the phenomena of the sunspot cycle. B D) about 14 billion light years (the size of the observable universe) 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. A star's lifetime does not depend on its mass. D) The cycle is truly a cycle of magnetic activity, and variations in the number of sunspots are only one manifestation of the cycle. D) 37,000 K. What is the solar wind? Question there were no dark energy, the expansion of the universe would be: constant accelerating decelerating . . Sunspots are areas on the surface of the Sun that appear darker than their surrounding regions. Every second, the Sun converts about 600 million tons of hydrogen into 596 million tons of helium. Electrostatic forces between the highly charged iron nuclei are, sufficient c. B) The Sun emits light of longer average wavelength. A "star" appears to become periodically dimmer for a few hours at, b. B) The density of the core would decrease, causing the core to cool off and expand. star, within which planets will eventually form. Therefore, we believe that our models are accurate if they can reproduce the characteristics of the Sun that we can observe. A) It slowly works its way to the Sun's surface, where it escapes into space. What is the term for loops or sheets of glowing gas ejected from active regions on the solar surface? During sunspot minimum, sunspots are far less frequent and the Sun may appear much more uniform in brightness. The overall result of the proton-proton chain is d. young 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. C) It is rapidly converted to energy when it meets an ordinary electron, resulting in matter-antimatter annihilation. As the formation of sunspots approaches the Sun's equator, the polarity of the Sun flips. Why, then, does it require four protons. What is a possible solution to the solar neutrino problem? At the beginning of the period, sunspots form at higher latitudes. Solution. A magnet, for example, may attract another thing. Reset Help deep-ocean trenches 1. Sunspots have distinct temperatures that are between 3000-4000 Kelvin, while the temperature of the rest of the Sun is 5000-6000 K. Sunspots are also constantly changing in shape and size, as their lifespans range from a few hours to several months. Which of the following is an example of humans influencing solar energy or seasonality? D) We see many sunspots on the surface of the Sun. C) radiation and elements like carbon and nitrogen. D) X-ray observations that penetrate the gas C. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. A) 5000 AD. no larger than about 1.4 times the mass of the Sun, otherwise. a. Select one: The spectral type of a star can be used to determine its surface temperature. D) orange C) They are all strongly influenced by magnetic fields on the Sun. The spectral type of a star can be used to determine its colour. a band running from upper left to lower right, d. The subsolar point is at the Tropic of Capricorn (23.5 S). 38) Which of the following statements about the sunspot cycle is not true? Once a year c. Every 2 years d. Every 11 years e. Every 10,000 years 4. which of the following is not true of sunspots? 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. E) The rate of nuclear fusion in the Sun peaks about every 11 years. C) areas of the corona where magnetic field lines project out into space, allowing charged particles to escape and form the solar wind B ) During this time, the number of spots can vary from a few to hundreds at a time. b. B Briefly describe why the fact that we detect neutrinos coming from the Sun supports the idea that the Sun generates energy by nuclear fusion. D They gradually shrink to the size of the Earth. The gravitational disturbance of one star's motion by its. B C) a hundred years ago. D Sunspots are surface disturbances caused by magnetic storms. gas pressure to halt the collapse. Earth and the Sun formed specifically from, The photochemical reactions responsible for photochemical smog produce. A) 6 H becomes 1 He + energy. D) reabsorbed as molecular hydrogen. Which of the following is not true of sunspots? Which part of the Hertzsprung-Russell diagram is occupied by, c. b. power of the temperature by the Stefan-Boltzmann relation, why. compared E) green. an irregular cycle averaging about 11 years, but sometimes, c. A) The sunspot cycle is very steady, so that each 11-year cycle is nearly identical to every other 11-year cycle. Which of the following best explains why the Sun's luminosity gradually rises over billions of years? B) at the same temperature but denser than the surface. Natural precipitation typically falls between pH 7.5 and 8.0. The movement of electric charges causes magnetism. B) the gravitational force Commonly associated with turbulent solar weather, magnetic field lines become more tightly wound as the rotating field and plasma interact. D) they are more likely to have their electronics "fried" by a solar flare during solar maximum. c. A longer lived source that could match the energy requirements is gravitational contraction. 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. D. Air pressure at sea level is approximately 1013.2 mb. more sunspots indicate increased solar radiation. A How does the Sun's mass compare to Earth's mass? Along the way, changes in the Sun's magnetism produce a greater number of sunspots, more energy and cause solar eruptions of particles. The "star" appears to move in a straight line against a, a. produces the auroras. atoms into one helium atom. . A) regions on the photosphere where magnetic lines poke through, creating the cooler areas of the sunspots Sunspots are darker because they are cooler than the surround area. D) It predicted that Earth would also shrink in size with time, which would make it impossible to have stable geology on our planet. Because they are cooler, they emit less thermal radiation per unit area and therefore look dark in contrast to brighter surrounding regions. d. Hydrogen fusion in the Sun requires a temperature (in Kelvin) of. The helium produced from the fusion of hydrogen has less mass than the hydrogen that goes into its formation. D) constantly rising to the surface through convection. method of calculating distance on a map. one continuous zone that functions as a whole. Which of the following is currently a big mystery to solar physicists? 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). New resources and matter are being added to Earth's systems all the time. another name for an electron that carries a positive charge. D) Energy is produced in the convection zone by nuclear fusion. ~ Very strong energy source production ofjets formed in isolated areas varies on extremely long timescales strong radio source 1/ point 1/ point 1/ point. neutron star, black hole, white dwarf, 29. Only about 1/3 of the expected number of neutrinos is observed. Curious about the Sun, Galileo used his telescope to learn more. B) The Sun's magnetic field, which plays a major role in the sunspot cycle, affects compass needles that we use on Earth. the nebula caused by the supernova explosion of a massive star. 10 km (6.21 mi) above the Earth's surface. E) Sunspots can produce flares and prominences. They occur in regions of lower-than-average magnetic fields. Select the correct map type or mapping method for the above map. False. B) 100% hydrogen and helium Which of the following is not true about sunspots? "Recent" events are those that date back tens of thousands of years. It results from chemical reactions with chlorine derived from CFCs. Daylength is longest on the summer solstice and is shortest on the winter solstice. These heated the interior enough to allow gravitational contraction and nuclear fusion to occur. The pressure from high-energy photons and neutrinos at the very, high c. Galileo's Daughter: A Historical Memoir of Science, Faith, and Love is a book by Dava Sobel published in 1999. 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. All radio signals pass through this region virtually unaffected. What are coronal holes? A) they are regions where convection carries cooler material downward. C) radiation and elements such as carbon and nitrogen. C. The tropopause serves as a buffer against the pressure exerted by the atmosphere. When sunspots occur, dark spots form on the surface of the sun. C) corona. (a) Determine the energy of the second excited rotational state, with J = 2. d. They increase and decrease in number, relatively regularly. Tree rings show the history of drought, fire, and other environmental variations. 3. Which of the following statements about solar sunspots is NOT true? 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. Magnetism is a physical quality mediated by a magnetic field that refers to the ability to create attracted and repulsive occurrences in other substances. Why are neutrinos so difficult to detect? Sunspots have been observed by astronomers and recorded since the time of Galileo and they have been used to track solar activity. A. We observe the Sun to exhibit a sunspot cycle over a period of 22 years, tied directly to its magnetic activity. Most of the CFC-induced ozone destruction is occurring near the equator, rather than near the poles. is not associated with transportation Sunspots are areas that appear dark on the surface of the Sun. D) there is less fusion occurring there. C QUESTION 30 According to the lastest survey estimates, which of the following classes of stars makes up about 8% of all the stars in the universe? A) send probes to measure the temperature. B. B) 5 million years. C) billions of degrees. E) because they are so small.
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