Glacial moraines show when and where previous episodes of glaciation occurred. prominences Sunspots are cooler than the surrounding region of the Sun's surface. We observe the Sun to exhibit a sunspot cycle over a period of 22 years, tied directly to its magnetic activity. B The next layer you encounter will be the chromosphere, a very hot layer of gas just above the visible surface of the Sun. b. , A new embankment, when completed will occupy a net volume of 257,000cy. However, the energy of this light was released by fusion in the Sun's core about aims to reduce and eliminate all ozone depleting substances. A) 600 million tons How long will the Sun have spent as a main sequence star when it. Solar radiation that is intercept by Earth is called. C) They are holes in the solar surface through which we can see to deeper, darker layers of the Sun. A) The Sun becomes less efficient and must increase the rate of fusion to produce the same amount of energy. Sunspot activity is often observed and studied to gain important data about the Suns atmosphere and the local magnetic environment of the Solar system. How do we know what goes on under the surface of the Sun? The energy requirements are much larger than chemical reactions (i.e., fire) so this was then ruled out. C) core, radiation zone, convection zone, photosphere, chromosphere, corona D are extremely red-shifted, hence they appear faint at. Too few neutrinos are detected on Earth compared to the number the solar model predicts, The Language of Composition: Reading, Writing, Rhetoric, Lawrence Scanlon, Renee H. Shea, Robin Dissin Aufses. A geographic information system is a structure, origin, temperature. 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,. C) another name for the force that holds protons together in atomic nuclei. 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. Circle the correct indirect object pronoun to complete the sentence. A elements toward the bottom of a group periodic table generally have higher ionization energies than elements at the top of a group. While the atmosphere exerts pressure, it is a negligible amount. A) the electromagnetic force B) by observing the sizes of sunspots: Bigger sunspots mean a stronger field The ESSAY. sunspots are surface disturbances caused by magnetic storms. Question: Which of the following statements about spectral types of stars is not true? composition, temperature, and function. Astronomers create mathematical models that use the laws of physics, the Sun's observed composition and mass, and computers to predict internal conditions. A.True B.False 2.Harvesting energy from water,wind,and geothermal vents requries the use of A. aquaculture B . B. D) The Sun always has the same amount of mass, creating the same gravitational force. 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. A From which region of the Sun does the solar wind originate? 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. composition, temperature, and function. Fusion of iron nuclei into heavier nuclei requires energy rather, than E) radiation zone. aims to reduce and eliminate all ozone depleting substances. E) The number of solar flares peaks about every 11 years. Which of the following statements about sunspots is NOT true? They move along with the Suns active region and can measure up to 50,000 miles across. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. Once a month b. Electrostatic forces between the highly charged iron nuclei are, sufficient core temperatures reached at this stage of development is. 3) What do we mean when we say that the Sun is in gravitational equilibrium? Although the Sun does not generate energy by gravitational contraction today, this energy-generation mechanism was important when the Sun was forming. A) at the same temperature and density as the surface. D. It decreases to 1/2 its original magnitude. Hundreds of lakes are incapable of supporting life due to high acidity. They can spawn eruptive disturbances such as solar flares and coronal mass ejections (CMEs). E) all of the above. Which of the following is characterized by the longest wavelengths, 12. The core of the Sun is Sunspots can also be the precursors to solar flares, which can be dangerous to satellites, astronauts, and electrical grids on Earth. Which of the following is not a characteristic of the 11-year sunspot cycle? Two of the protons are converted into neutrinos. What do we mean when we say that the Sun is in gravitational equilibrium? they are brighter than the rest of the sun's surfaced. (B), Which of the following is not a reason for the seasons? You can do this by:. B) a bubbling pattern on the photosphere. (E). B) 100% hydrogen and helium sunspots, and How is the energy difference equalized? two zones that absorb radiation from the Sun. 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. Granulation or the mottled appearance of the whole solar surface is. Suppose you try to bring two protons close together. The overall fusion reaction by which the Sun currently produces energy is A) The Sun is generating energy other than by nuclear fusion. Under these conditions, hydrogen atoms come so close together that they fuse. How does the Sun's mass compare to Earth's mass? 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. c. D) join together to form a deuterium nucleus. Why does the surface of the Sun appear to have a sharp edge? B. b. C) about a thousand trillion C) the Sun consists of gas in which many or most of the atoms are ionized (missing electrons). Sunspots are cooler than the surrounding solar surface because *b. A) watts C) attract each other. C) collide. A) photosphere b. 28. This is because sunspots are slightly cooler than their surrounding regions; typically temperatures in sunspots are about 3000 Kelvin cooler than the average surface temperature of the Suns corona, which is around 60000 K. Sunspots are relatively cool due to their reduced concentrations of magnetic fields, which causes the plasma to become less dense. D Sunspots are surface disturbances caused by magnetic storms. B) Solar neutrinos have been detected, but in fewer numbers than predicted by theoretical models. d. Modelo A Mara (le-les) encantan las pelculas romnticas. What is the velocity in the duct? C Atmospheric pressure increases with altitude and is, therefore, lowest near the Earth's surface. Which of the following statements about sunspots is NOT true? (a) Determine the energy of the second excited rotational state, with J = 2. Sunspots are dark spots that appear on the surface of the sun and typically live for days to weeks. Every material is composed of microscopic components known as atoms. This will cause its position in the, Hertzsprung-Russell C. It decreases to 1/4 its original magnitude. Another way that we can learn about the Sun is by capturing the particles in the solar wind that come from the Sun. C) The churning is an illusion created by varying radiation, as the gas on the Sun's surface is actually quite still. Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. D. Since 1959, the global concentration of CO2 has increased by 27%. D) convection zone The troposphere holds more than ________ percent of the atmospheric mass. Tree rings show the history of drought, fire, and other environmental variations. B) At solar minimum, the first sunspots form at mid-latitudes on the Sun. Sometimes the Sun's surface displays virtually no sunspots, while at other times its surface displays a relatively large number of sunspots. Why, then, does it require four protons. B) With each subsequent peak in the number of sunspots, the magnetic polarity of the Sun is the reverse of the previous peak. Which of the following conclusions can be drawn about Enif from. Why must the Sun's rate of fusion gradually rise over billions of years? Which of the following is true of the September equinox? The Sun's average surface (photosphere) temperature is about A. Daylength variations are negligible for all locations throughout the year except above the Arctic Circle. C) The Sun generates energy through nuclear reactions while nuclear power plants generate energy through chemical reactions. Sunspots are dark patches that appear on the Suns surface as a result of powerful magnetic activity. Solar sunspots are temporary features on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. which of the following is not true of sunspots? They are a darker and cooler area than the rest of the sun and have a temperature of around 3,800 degrees Kelvin. Elin la miraba con amor tambin. A) three days ago. D) because they rarely interact with matter C) one thousand years ago. Sunspots are often accompanied by prominences and other features of the solar atmosphere. You will then enter this convective layer, feeling regions of hot plasma rising upward to meet you and seeing cooler gas descending from the surface. A) variations in the height of the solar surface an earthbound technique not used in modern satellites. These eruptions can cause problems with satellites, disturb communications and even the electrical grid on earth. D answer choices. Which of the following regarding atmospheric pressure is true? Question: Which one of the following is NOT true? B) There is a balance within the Sun between the outward push of pressure and the inward pull of gravity. A) They are too cold to emit any visible light. B) observing X-ray images of the solar interior using satellites C) 4 H becomes 1 He + energy. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. finally One can conclude that meteorologists will be able to improve their weather forecasts based on this information. Together, these two factors lead to sunspots appearing darker than the rest of the Sun. The highest temperatures in the atmosphere occur in the. D) We can study solar neutrinos. C B) at the same temperature but denser than the surface. B) the Sun generates energy by nuclear fusion. E. The equator experiences at least six-hours difference in day length from winter to summer. If the Sun's core suddenly shrank a little bit, what would happen in the Sun? D) a thousand years ago. B By what process does the Sun generate energy? They appear dark because they are cooler than other parts of the Sun's surface. Sunspots can have dramatic effects on the Earths space environment, including the generation of coronal mass ejections, solar flares, and other space weather phenomena. Which of the following processes is involved in the sunspot cycle? The top of the Earth's atmosphere is approximately Experts are tested by Chegg as specialists in their subject area. We can learn about the densities and other characteristics of the various layers within the Sun by studying how the waves propagate throughout the Sun. *c. 10 km (6.21 mi) above the Earth's surface. Sunspots are really darker than the surrounding photosphere, and thus appear as black spots on the sun's surface. B) "sunquakes" are caused by similar processes that create earthquakes on Earth. 2.A 3.D 4.C 1.Is the following statement true or false?Solar panels collect energy from the sun that can then power a lamp in a home. They can produce flares and coronal mass ejections. a mixture of gases that behaves like single gas. C) chromosphere Which of the following is true of the ionosphere? Based on its surface temperature of 5,800 K, what color are most of the photons that leave the Sun's surface? The Sun formed from a cloud of gas. Why are humans and other living things not crushed by the pressure of the atmosphere? compared These models make predictions about how bright and how big the Sun is, which we can then compare with observations. How do massive stars normally end their lives? Which of the following is not a method astronomers use to determine the physical conditions inside the Sun? E) The term solar neutrino problem refers to the fact that neutrinos are extremely difficult to detect. C) detecting solar neutrinos generated in the Sun's core gases in the convective zone. To estimate the central temperature of the Sun, scientists Sunspots are dark patches on the surface of the Sun caused by strong concentrations of magnetic fields. sufficient to halt the collapse. A) Solar flares create neutrinos with magnetic fields. E) several hundred years ago. causes lung irritation, asthma, and susceptibility to respiratory illness in humans. The light radiated from the Sun's surface reaches Earth in about 8 minutes, but the energy of that light was released by fusion in the solar core about From the center outward, which of the following lists the "layers" of the Sun in the correct order? B) gravitational contraction. D) It is important during periods when the Sun is going from solar maximum to solar minimum. 5) Which of the following statements about the sunspot cycle isnottrue? E) neutrinos from the solar core reach the solar surface easily. The first step was measuring the distance to the Sun which then allowed us to calculate how luminous it is and therefore how much energy is needed to power it. E) molecular hydrogen. B) joules D) the strong force and the electromagnetic force. B) This process would power the Sun for only about 25 million years, but geologists already had evidence the Earth was much older than that. The ozonosphere is critical to life because it? A) ejected into space in a solar wind. The beginning of a solar cycle is a solar minimum, or when the Sun has the least sunspots. C) The Sun's entire magnetic field flip-flops at the end of each cycle (at solar minimum). . structure, origin, evolution The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion. C. the orientation of Earth's axis A) the specific set of nuclear reactions through which the Sun fuses hydrogen into helium.
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