an One important aspect of the study of binary star systems, as, distinct A More sunspots indicate increased solar radiation. The troposphere holds more than ________ percent of the atmospheric mass. B) millions of degrees. The statement "Sunspots are brighter than the rest of the sun's surface" is false. Which of the following is not a method astronomers use to determine the physical conditions inside the Sun? D) orange The stars of the Milky Way B. A) They are too cold to emit any visible light. sufficient to halt the collapse. Because they are moving rapidly away from the Sun and their, spectra Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots. C) magnetic fields trap ionized gases that absorb light. Which of the following processes is involved in the sunspot cycle? E) both B and D. Studies of sunquakes, or helioseismology, have revealed that Lower-mass stars run through their lives faster and have shorter. neutron star, black hole, white dwarf, 29. How can we measure the strength of magnetic fields on the Sun? Which of the following is correct regarding day length? B) 25 million years What two physical processes balance each other to create the condition known as gravitational equilibrium in stars? D) The Sun initially began generating energy through nuclear fusion as it formed, but today it generates energy primarily through the sunspot cycle. The CFC molecules react with ultraviolet light to release fluorine which then destroys ozone. Typically, the presence of multiple sunspots means an increase in solar activity, which in turn can lead to periods of higher solar flare activity. As the formation of sunspots approaches the Sun's equator, the polarity of the Sun flips. C) one thousand years ago. A) gravitational contraction of the Sun of indeterminate age, since one cannot estimate the age of the, d. D) The Sun was born with a supply of neutrinos that it gradually emits into space. E) green. Which of the following observations would NOT be an indication of a, a. B. ionization energy is the amount of energy used to add an electron to an atom. D Trucks with a 35,000 pound capacity will be used for transport a) Compute the required volume of borrow pit excavation. Iron nuclei are so large that they occupy all remaining space and, c. Experts are tested by Chegg as specialists in their subject area. C) converted to an amount of energy equal to 4 million tons times the speed of light squared. A "star" appears to become periodically dimmer for a few hours at, b. A) We have X-ray images from satellites of the interior of the Sun. A magnet is an item with magnetic qualities. The longest day of the year occurs on the December solstice. E) The rate of nuclear fusion in the Sun peaks about every 11 years. Recommended Amendments to the Comprehensive Plan, sort the following manganese compounds by whether the cation is manganese ii or manganese iii. Glacial moraines show when and where previous episodes of glaciation occurred. D) No one understood how it could be possible for neutrinos to be produced in the Sun. E. CO2 is a by-product of life processes. The Sun was once postulated to be a cooling ember, but that would have meant the Sun would have been much hotter in its immediate past (just a few hundred years ago) and people could not have lived in such a hot environment. B gases in the convective zone. All the photons produced in the Sun's core have been absorbed by the outer edge of what region of the Sun? A) helioseismological fluctuations. Which of the following is the phase of matter in the Sun? Solar radiation that is intercept by Earth is called. D) No one knows: this is the essence of the "solar neutrino problem.". C) monitor changes in Earth's atmosphere. Based on function, the atmosphere has It is based on the surviving letters of Galileo Galilei's daughter, the nun Suor Maria Celeste, and explores the relationship between Galileo and his daughter.It was nominated for the 2000 Pulitzer Prize for Biography or Autobiography. a. D) They are thick clouds on the sun, blocking its light. A another name for an electron that carries a positive charge. B) There are many sunspots visible on the surface of the Sun. 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. A) at the same temperature and density as the surface. Sunspots are caused by groups of unbalanced magnetic fields on the suns surface. B) at the same temperature but denser than the surface. C) holes in the corona of the Sun that allow us to see the photosphere B B) When a star contracts in size, gravitational potential energy is converted to thermal energy. Every material is composed of microscopic components known as atoms. Because they are shrouded in very thick atmospheres. It has a ratio of turns N1/N2N_1 / N_2N1/N2 of 100 to 1. Sunspots are most prevalent in an 11-year cycle; the number of sunspots peaks about every 11 years. B) joules C) The Sun rotates faster at the equator. Large, dark sunspots can persist on the Suns face for periods of days or weeks, though smaller ones tend to appear and vanish much faster. The top of the Earth's atmosphere is approximately A) the Sun vibrates only on the surface. A) The Sun becomes less efficient and must increase the rate of fusion to produce the same amount of energy. C What is the term for loops or sheets of glowing gas ejected from active regions on the solar surface? A) nuclear fission. D. It decreases to 1/2 its original magnitude. (a) Dete 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. E) The Sun does not emit neutrinos. Which of the following is an example of humans influencing solar energy or seasonality? B) red According to modern science, approximately how old is the Sun? C) This process could not possibly lead to the observed power output of the Sun. B) 100% hydrogen and helium C) billions of degrees. How gravity behaves at the densest part of the Sun c. Why the outer layers of the Sun are hotter than the surface d. Why sunspots often appear and disappear in pairs e. Why solar activity seems to follow a cycle B) photosphere. Hundreds of lakes are incapable of supporting life due to high acidity. 6. structure, origin, temperature. Almost all elements heavier than hydrogen and helium were made inside stars. Briefly describe what you will see as you descend. B) Energy is produced in the convection zone by nuclear fusion. B) core, convection zone, radiation zone, corona, chromosphere, photosphere A) nuclear fission The overall fusion reaction by which the Sun currently produces energy is 13. sunspots can be up to 12 times larger than earth. C) the Sun consists of gas in which many or most of the atoms are ionized (missing electrons). We can apply our knowledge of how gases behave at different temperatures and densities, which is testable in laboratory environments, to make a mathematical model of the Sun. E) Energy is conserved so while the gas moves up and down, there is no net transport of energy. In increase with altitude because of the absorption of ultraviolet radiation. The cycle then repeats for another 11 years with the magnetic poles of the Sun flipped. New resources and matter are being added to Earth's systems all the time. Sunspots are dark, planet-size regions of strong magnetic fields on the surface of the sun. Follow the model. to theoretical models of the Sun. C) It is rapidly converted to energy when it meets an ordinary electron, resulting in matter-antimatter annihilation. The overall result of the proton-proton chain is Inside the Sun, this process begins with protons (which is simply a lone hydrogen nucleus) and through a series of steps, these protons fuse together and are turned into helium.So all A,B,C are produced in nuclear fusion in the sun. B) wave motions in the solar interior 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. The Sun is a relatively young star, near the beginning of its life. The people living at 40 N or S experience about six-hours difference in daylength from winter to summer. They appear dark because they are cooler than other parts of the Sun's surface. The middle of the solar cycle is the solar maximum, or when the Sun has the most sunspots. INSTRUCTIONS:Fill B) nuclear fusion Which of the following best describes what would happen? It increases to 4 times its original magnitude. B sulfur oxides and nitrogen oxides However, the energy of this light was released by fusion in the Sun's core about Jupiter's moons The planet Jupiter was accompanied by four tiny satellites which moved around it. Atmospheric pressure increases with altitude and is, therefore, lowest near the Earth's surface. D) they are more likely to have their electronics "fried" by a solar flare during solar maximum. Approximately how many neutrinos pass through your body each second? The subsolar point is at the Tropic of Capricorn (23.5 S). Which of the following is characterized by the longest wavelengths, 12. The heating of the localized areas of the atmosphere of one star. This will cause its position in the, Hertzsprung-Russell an undetermined amount of mass, depending on the temperature at, 19. They often occur in pairs of opposite magnetic polarity. A star's lifetime does not depend on its mass. C. C) our mathematical models of the solar interior are fairly accurate. b. C A) an imbalance in the operation of the solar thermostat A) watts A sunspots are brighter than the rest of the sun's surface. b. D A) The number of sunspots peaks approximately every 11 years. E. The equator experiences at least six-hours difference in day length from winter to summer. D) because they rarely interact with matter Which of the following is true regarding acid deposition? What happens to energy in the convection zone of the Sun? 10. 15. 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. your choice on the answer sheet. cycle generates sufficient energy to stop the collapse. Determine the distance traveled a Which of the following can be used to determine the temperature of a star? D) The chromosphere and corona are both best studied with radio telescopes. Which of the following regarding atmospheric pressure is true? Why is it important to understand the Sun in order to understand the Earth's radiation belts and space weather? they D) It quickly meets an ordinary electron, forming an electron-positron pair that remains stable. less mass than the four hydrogen atoms, because the energy, produced producing excess energy and therefore will not produce the. B) repel one another. B) by observing the sizes of sunspots: Bigger sunspots mean a stronger field Anne Danahy B) strong magnetic fields slow convection and prevent hot plasma from entering the region. The top of the Earth's atmosphere is approximately. 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. What is the common cause of sunspots, flares, and prominences? B. Sunspot occurrence has a regular cycle, with an average of 11 years between maximums. They are often seen as areas of reduced brightness or black spots on the surface of the Sun. D) radioactive elements such as uranium and plutonium. Most of the CFC-induced ozone destruction is occurring near the equator, rather than near the poles. , if we change an experiment so to decrease the uncertainty in the location of a particle along an axis, what happens to the uncertainty in the particle A) 5000 AD. It is held up by gas pressure due to the very high temperature, b. white dwarf, black hole, neutron star, b. A. Sunspots have been continuously counted each day since 1838, which has allowed solar scientists to describe a repeating pattern in the wax and wane of activity on the Sun's surfacethe solar. They are magnetic storms. D) The magnetic polarity of the Sun reverses approximately every 11 years. Acid deposition is deposition that measures more than 7.0 on a pH scale. Modelo A Mara (le-les) encantan las pelculas romnticas. After 11 years the Sun's magnetic polarity flips again, completing the 22-year period. E) The electron neutrinos created in the Sun change into another type of neutrino that we do not detect. 2. The most likely places where stars and planetary systems are forming. However, some energy is released from the upper layers of the solar atmosphere. Our Sun will end its life by becoming. A) 3 H 1 Li + energy. in correct order of increasing temperature? C) The Sun emits light of longer average wavelength. Which of the following conclusions can be drawn about Enif from. Nuclear power plants on Earth create energy in the same way as the Sun. 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. C) We can send a space probe into the Sun's photosphere. A) 600 million tons Under these conditions, hydrogen atoms come so close together that they fuse. Suppose that, for some unknown reason, the core of the Sun suddenly became hotter. The helium atom has, a. D) the Coriolis force method of collecting geologic data. very young, because the G and K stars are still evolving towards, b. Which of the following statements about sunspots is NOT true? E) all of the above. A are extremely red-shifted, hence they appear faint at. A. 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. Use A) The number of sunspots peaks approximately every 11 years. D) The convection zone is the source of ultraviolet light, and the upper photosphere is the source of X rays. D) measuring Doppler shifts to observe solar vibrations They often appear in pairs or clusters. D) X-ray observations that penetrate the gas Which of the following is TRUE? Which is closest to the temperature of the core of the Sun? It occurs in large amounts in the atmosphere relative to other gases, such as nitrogen and oxygen. Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. which of the following is not true of sunspots? Sunspots can appear in groups, or clusters, and their life-cycle can last from days to weeks to months. Why do sunspots appear dark in pictures of the Sun? B However, we detect far fewer than expected. d. Which of the following statements about the sunspot cycle is not true? Solar neutrinos coming from the Sun have been detected, but in fewer numbers than predicted by theoretical models. B) use hot gas to create a small Sun in a laboratory. 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. C) The Earth's natural magnetic field already offers excellent protection against the onslaught of solar neutrinos. white dwarf, neutron star, black hole, d. B) 4 million tons d. Because of the electromagnetic force, the two protons will One can conclude that meteorologists will be able to improve their weather forecasts based on this information. A) The Sun's surface is boiling. Most of the energy produced in the Sun is released in the form of visible light from the photosphere. 4). The Sun appears to have a cycle of about 11 years during which it waxes and wanes. B does not work beyond the silicon fusion cycle that produces, *a. computer-based processing tool for analyzing geographic data. If an electric hair dryer uses 2,400 J of" energy in 2 s, what is its power? 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 . C. It is critically important in regulating the temperature of the planet. A) They all have about the same temperature. convective motion of gases in the upper portion of the Sun's, 24. Sunspots are areas on the surface of the Sun that appear darker than their surrounding regions. produces the auroras. Sunspots can vary in size from just a few hundred to over 100,000 kilometers across.

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