Ions and electrons are pushed apart by the electric forces, d. D) Sunspots are surface disturbances caused by magnetic storms. 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. E) none of the above. a verification of the Doppler equation for wavelength shift of. A) collide. D A D) the strong force and the electromagnetic force. 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. Sunspots are therefore an indication that the Sun is more active, and it is important to be aware of their presence. B) The problem arose only because experimental data were being misinterpreted; on re-examination, the old data showed that the expected number of neutrinos were being detected. C) chemical reactions has a charge of +2. If the solar core were to increase in temperature, the nuclear fusion rate would soar, generating excess energy that increases the pressure and pushes the core outwards. The ozonosphere is critical to life because it? a mixture of gases that behaves like single gas. C) 600 tons D) 11 years ago. correlated equilibria) and extrinsic uncertainty in market economies (e.g. A) Higher temperature would cause the rate of nuclear fusion to rise, which would increase the internal pressure, causing the core to expand and turn the Sun into a giant star. B *c. (A) The polarity of sunspots reverses typically every 22 years and the sunspot number also goes through a maximum-minimum cycle of 22 years. E. All radio signals pass through this region virtually unaffected. . Most. E. The equator always receives equal hours of day and night. C) It has played a role throughout the Sun's history, but it was most important right after nuclear fusion began in the Sun's core. Which of the following statements about sunspots is NOT true? Radio waves from GPS are strengthened in the ionosphere. B) It referred to the fact that neutrinos are extremely difficult to detect. Tree rings show the history of drought, fire, and other environmental variations. c. Which is the correct sequence for the following end-points of. D) Not all fusion reactions create electron neutrinos. 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 Sunspots can also often be accompanied by intense dark patches of plasma that are suspended above the suns surface called prominences, which may disperse into space and can cause beautiful auroras if they are directed toward Earth. C) our mathematical models of the solar interior are fairly accurate. It is intrinsically brighter than the Sun. *c. B A Cepheid variable star with a period of a few days. B) Fusion in the Sun's core creates neutrinos. The gravitational disturbance of one star's motion by its. D) converting kinetic energy into electricity C What is the common cause of sunspots, flares, and prominences? Why are humans and other living things not crushed by the pressure of the atmosphere? Question 4 options: They are holes where we can see into the the interior of the Sun. Once a month b. A rapidly rotating neutron star, producing beams of radio energy. What would happen to the core of the sun if its temperature rose slightly? A) The Sun becomes less efficient and must increase the rate of fusion to produce the same amount of energy. E. CO2 is a by-product of life processes. Scientists believe sunspots are associated with the Suns erratic magnetic cycle, which typically takes 11 years to complete. They are often seen as areas of reduced brightness or black spots on the surface of the Sun. E) The electron neutrinos created in the Sun change into another type of neutrino that we do not detect. E) all of the above. C) Neutrinos have no electrical charge. D none of the above Advertisement vblitesgkohrrssuovt B I think but not sure C) It is physically impossible to generate heat simply by making a star shrink in size. E) all of the above. B Sunspots are darker than the surrounding solar surface because they are caused by concentrations of strong magnetic fields that inhibit convective currents, preventing the transfer of heat from the interior of the Sun to the surface. During the cycle, the amount of activity in the sunspot region increases and decreases. D) The number of sunspots on the Sun at any one time gradually rises and falls, with an average of 11 years between the times when sunspots are most numerous. 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. Magnetism is a physical quality mediated by a magnetic field that refers to the ability to create attracted and repulsive occurrences in other substances. D Sunspots are surface disturbances caused by magnetic storms. Because of the electromagnetic force, the two protons will B 15. One can conclude that meteorologists will be able to improve their weather forecasts based on this information. A repairman climbs the pole. The reaction of automobile exhaust and ultraviolet light C) 4 tons At the center of the Sun, fusion converts hydrogen into unevenly mixed gases that act independently. B B) They are all shaped by the solar wind. E) helium, energy, and neutrinos. The Sun will exhaust its nuclear fuel in about 3. D) reabsorbed as molecular hydrogen. Not only is Earth suddenly spinning faste r, but our Sun is getting more active than NASA predicted. Line spectra C. Light from sunspots D. The star's magnetic field core temperatures reached at this stage of development is. C. potassiumhas a lower ionizationenergy than sodium D. C. the orientation of Earth's axis 3. Two helium nuclei are formed from the four protons. B) They are regions that are significantly cooler than the rest of the photosphere. B) It is physically impossible to generate heat simply by making a star shrink in size. B) another name for the way sunspots look on the surface of the Sun You will then reach the source of these photons, the core of the Sun, which is actively involved in nuclear fusion, converting hydrogen into helium and releasing multitudes of photons and neutrinos. they can produce flares and prominencesc. E) Energy is conserved so while the gas moves up and down, there is no net transport of energy. This low density in turn causes the Suns energy to be absorbed unevenly, creating areas on the surface that are cooler than their surroundings. sunspots, A) because there are so rare composition, temperature, and function. It increases to 2 times 3. D. It results from the burning of fossil fuels. gas pressure to halt the collapse. Why is the hole in the ozone greatest over Antarctica? C) detecting solar neutrinos generated in the Sun's core is lost from the atom, and energy is equivalent to mass, c. When the Sun is near solar maximum, it undergoes a much higher rate of violent activity in the form of solar flares. affects temperatures. Based on function, the atmosphere has The notion that ozone is being depleted as a result of human activity has little scientific evidence to support it. The heating of the localized areas of the atmosphere of one star. D) The Sun's gas is on fire like flames from wood or coal, and these flames emit visible light. B) millions of degrees. A) photosphere Sunspots may also be caused by changes in the Suns rotation, which can cause its poles to move, creating changes in the magnetic field and sunspot activity. d. They increase and decrease in number, relatively regularly. The spectral class of the star Enif is K2 while that of the Sun is, G2. question What is a possible solution to the solar neutrino problem? After 11 years the Sun's magnetic polarity flips again, completing the 22-year period. B Sunspots occur in pairs. When is/was gravitational contraction an important energy generation mechanism for the Sun? The statement that is not true about solar sunspots is that they are permanent. C) They are extremely hot and emit all their radiation as X rays rather than visible light. C an elusive, subatomic particle having little or no mass, and. Magnetism is caused by attraction when two items are brought together or repulsion when two objects are moved apart. B) There is a balance within the Sun between the outward push of pressure and the inward pull of gravity. C) about a thousand trillion C hotter. created the Intergovernmental Panel on Climate Change. A) They are composed of different elements than the rest of the sun. 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. D) 37,000 K. What is the solar wind? A) variations in the height of the solar surface Photographs reveal that most of them have atmospheres much like that of Jupiter. Which of the following is correct regarding day length? computer-based processing tool for analyzing geographic data. Which of the following statements about the sunspot cycle is not true? How is the sunspot cycle directly relevant to us here on Earth? C) nuclear fission D) a thousand years ago. Despite their dark appearance, sunspots do not detract from the amount of energy being produced by the sun, meaning that they do not have an effect on the Earths temperature. A) the Sun is made of material that acts like a liquid acts on Earth. C 10 km (6.21 mi) above the Earth's surface. 480 km (300 mi) above the Earth's surface. Which of the following can be used to determine the temperature of a star? E. The circle of illumination passes through both poles. 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. b. It results from chemical reactions with chlorine derived from CFCs. computer-based processing tool for analyzing geographic data. C D) neutrinos from the solar core reach the solar surface easily. E. What was the major drawback to this idea? B) 3 He 1 C + energy. b. They exert pressure outward, counterbalancing atmospheric pressure. These . contains hot B-type stars on the main sequence and cooler G- and, K-type Which of the following statements is not true? D) join together to form a deuterium nucleus. Describe a Laura y a Elin usando los verbos recprocos. D) The core would heat up, fusion rates would increase, and the core would re-expand. 1) In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot thanks to gravitational contraction. more sunspots indicate increased solar radiation. Hint 1. 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. The CFC molecules react with ultraviolet light to release chlorine which then destroys ozone. C) 5 billion years. B) Nuclei are attracted to each other by the electromagnetic force, but this force is only strong enough to make nuclei stick when they are very close together. A) 5000 AD. E) all of the above. C 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. Glacial moraines show when and where previous episodes of glaciation occurred. C The source of energy that keeps the Sun shining today is D) Sunspots are surface disturbances caused by magnetic storms. This is because large magnetic fields are concentrated in these areas, inhibiting convection and cooling the surface. predicted E) neutrinos from the solar core reach the solar surface easily. 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? Sunspots appear in cycles, with high numbers of spots occurring during certain periods and low numbers at others. C B) The likelihood of seeing solar prominences or solar flares is higher when sunspots are more common and lower when they are less common. D) core. C. The subsolar point is at the Tropic of Cancer (23.5 N). During sunspot minimum, sunspots are far less frequent and the Sun may appear much more uniform in brightness.