Although the Sun does not generate energy by gravitational contraction today, this energy-generation mechanism was important when the Sun was forming. B) nuclear fusion D C) The chromosphere and corona are both best studied with visible light. B) radioactive decay. C) 4 H becomes 1 He + energy. composition, temperature, and function. E) the winding of magnetic field lines due to the Sun's rotation, What observations characterize solar maximum? in correct order of increasing temperature? They tend to cluster at high solar latitudes. The subsolar point is at the Tropic of Capricorn (23.5 S). The diameter of a typical neutron star of 1 solar mass is predicted, 7. 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. B) gravitational force and outward pressure C) Not all fusion reactions create neutrinos. D) X-ray observations that penetrate the gas the Sun and energy output per unit area of a star depends on the, 4th What is the primary source of energy for the Sun? (B), Which of the following is not a reason for the seasons? C A high-mass star near the end of its life undergoes successive, cycles The heating of the localized areas of the atmosphere of one star. If an electric hair dryer uses 2,400 J of" energy in 2 s, what is its power? sunspots are surface disturbances caused by magnetic storms. B) The chromosphere is best observed with ultraviolet telescopes and the corona is best observed with X-ray telescopes. Which of the following is true of the Sun's electromagnetic spectrum? 31)Option - C is . What happens to the missing matter? 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. C) variations of the solar thermostat Which is the correct sequence for the following end-points of. How often is there an increase in sunspot activity? 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. Why do the tropics have a positive net radiation while the poles have a negative value? core temperatures reached at this stage of development is. An ice storm breaks a transmission line and interrupts electric power to a town. 30. Most. Sunspots can last anywhere from a few hours to several months. is 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. nitrogen oxides and ozone Which of the following is correct regarding day length? and A pulsating white dwarf star, fluctuating rapidly in brightness. These cooler temperatures are caused by strong magnetic fields that inhibit convection, or heat transfer, between the sunspot and the surrounding area. d. The main cause of sunspots is the suns magnetic field. 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. Laboratory experiments and theory show that fusion produces neutrinos. They are regions of reduced surface temperature, caused by concentrations of magnetic field flux that inhibit convection. C) hotter and denser than the surface. 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. D) Energy is consumed in the convection zone by the creation of electrons and positrons. sunspots are surface disturbances caused by magnetic storms. E Sunspots can produce flares and prominences. C) 5 billion years. (E). Which of the following is the phase of matter in the Sun? contains hot B-type stars on the main sequence and cooler G- and, K-type 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%. B. C) The rate at which fusion occurs would decrease, leading to a contraction of the core, which would in turn cause a further temperature rise. Ions and electrons are pushed apart by the electric forces, d. After passing through this layer, you will reach the radiation zone, where photons are engaged in a random dance as they are continuously absorbed and re-emitted by the hot gas there. B. Chapter 11 Flashcards | Quizlet A elements toward the bottom of a group periodic table generally have higher ionization energies than elements at the top of a group. Daylength variations are negligible for all locations throughout the year except above the Arctic Circle. As such, they are transient and not permanent. They vary in number on an 11 year cycle. Once a month b. d. Sunspots increase the energy output of the Sun TRUE FALSE How much mass does the Sun lose through nuclear fusion per second? Main sequence stars all have approximately the same mass, by, 25. 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. 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. D. It results from the burning of fossil fuels. *c. An air mass initially reflects the, As the Earth is a much cooler body than the sun, the Earth emits: A. ultraviolet radiation B. short-wave infrared radiation C. long-wave radiation D. visible light radiation, Select the correct map type or mapping method for the above map? Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. 480 km (300 mi) above the Earth's surface. Save my name, email, and website in this browser for the next time I comment. A) send probes to measure the temperature. Solely natural gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. C) nuclear fusion of hydrogen into helium. B ) system and radically alter the evolution and behavior of the, a. E) both C and D, Studies of solar vibrations have revealed that The eclipsing of the light from one star by the other, when, d. Which of the following statements is NOT true for sunspots? D) No one understood how it could be possible for neutrinos to be produced in the Sun. What evidence then do we have to support our current ideas about the solar interior? After 11 years the Sun's magnetic polarity flips again, completing the 22-year period. a. C) vibrations seen at the solar surface The Sun's surface seethes and churns with a bubbling pattern. finally C) The rate of nuclear fusion in the Sun peaks about every 11 years. additional B) It is physically impossible to generate heat simply by making a star shrink in size. Astronomers create mathematical models that use the laws of physics, the Sun's observed composition and mass, and computers to predict internal conditions. How do we know how old the solar system is quizlet. D B) It is the primary energy generation mechanism in the Sun today. Use Choose Sunspots are really darker than the surrounding photosphere, and thus appear as black spots on the sun's surface. is ineffective because so few countries have ratified it. A. Atmospheric pressure increases with altitude and is, therefore, lowest near the Earth's surface. sunspots can produce flares and prominences. Sunspots are cooler than the surrounding solar surface because What do sunspots, solar prominences, and solar flares all have in common? does not work beyond the silicon fusion cycle that produces, *a. They exert pressure outward, counterbalancing atmospheric pressure. D) the Coriolis force A. C) They have no mass. unevenly mixed gases that act independently. The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion. (b) Find the frequency of the photon absorbed in the J = 1 to J = 2 transition. What is the typical length of time between sunspot minimums and sunspot maximum; that is, what is the typical length of the "sunspot cycle"?

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