Based on function, the atmosphere has A) 70% hydrogen, 28% helium, 2% other elements Which of the following is not true regards to Earth as system? C) a hundred years ago. 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. D) They all occur only in the Sun's photosphere. B impossible, because one cannot have cool stars above the main. 33. A finally
Which is the correct sequence for the following end-points of. Is our sun going into hibernation? | Space The ESSAY. method of calculating distance on a map. 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. B. ionization energy is the amount of energy used to add an electron to an atom. B) Sunspots are brighter than the rest of the Sun's surface. C) Newtons 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. D. They are surface disturbances caused by magnetic storms. C) 5 billion years. 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. C) magnetic fields trap ionized gases that absorb light. Most choices will fit grammatically and will even make sense logically, but you must choose the pair that best fits the idea of the sentence. At the height of this cycle, known as solar maximum, the Sun's magnetic poles flip. D) gravitational force The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion. Sunspots can vary in size from just a few hundred to over 100,000 kilometers across. What two physical processes balance each other to create the condition known as gravitational equilibrium in stars? The lifetimes of stars are too long to measure, so it is not. Sunspots have been observed by astronomers and recorded since the time of Galileo and they have been used to track solar activity. 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. Melt from the subducting plate rises to the surface, erupts through the . In the center section near to the Sun's position, with lower mass, d.
a verification of the Doppler equation for wavelength shift of. established a framework to address acid precipitation. The cycle then repeats for another 11 years with the magnetic poles of the Sun flipped. c.
During their rotation, the sunspots break up, regroup, and re-form in different configurations, as well as drift across the Suns surface. predicted
E) The rate of nuclear fusion in the Sun peaks about every 11 years. What is granulation in the Sun? Each atom contains electrons, which are charged particles. 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? C) collide. The first step in the proton-proton chain produces an antielectron, or positron. Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots. D) The electron neutrinos created in the Sun's core change into another type of neutrino that we did not detect. From which region of the Sun does the solar wind originate? system and radically alter the evolution and behavior of the, a. Which of the following is NOT a correct statement about sunspots? Sunspots can also be the precursors to solar flares, which can be dangerous to satellites, astronauts, and electrical grids on Earth. D) nuclear fusion. C) They have no mass. C) We have sent probes below the surface of the Sun. 3) What do we mean when we say that the Sun is in gravitational equilibrium? (A), Based on temperature, the atmosphere is divided into. (b) Find the frequency of the photon absorbed in the J = 1 to J = 2 transition. They are regions of reduced surface temperature, caused by concentrations of magnetic field flux that inhibit convection. 3. The beginning of a solar cycle is a solar minimum, or when the Sun has the least sunspots. Which of the following best describes air pollution? D) about 14 billion light years (the size of the observable universe) At solar maximum, the height of magnetic activity, we observe many sunspots and solar flares. 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. What Is The Charge Carried By Each Sphere? - QuestionsAndAnswers stellar
Sunspots are temporary dark spots that appear on the surface of the Sun. C) 4 tons from single stars, is that it provides, a.
B) about one thousand Another way that we can learn about the Sun is by capturing the particles in the solar wind that come from the Sun. b. After observing the Earth's weather patterns and the 11-year sunspot cycle of the Sun for 36 years, scientists have found that high levels of sunspot activity precede shifts in wind patterns that affect the Earth's weather. D) only by using sophisticated computer models, because there are no observational ways of measuring magnetic field strength. B) There is a balance within the Sun between the outward push of pressure and the inward pull of gravity. A) The number of sunspots peaks approximately every 11 years. The middle of the solar cycle is the solar maximum, or when the Sun has the most sunspots. E) Sunspots can produce flares and prominences. They are cooler because their strong magnetic fields suppress convection and prevent hotter material from flowing into them. Finally, we can test our knowledge of nuclear physics and the fusion process in the core using observations of solar neutrinos. ________ refers to changes in daylength and the Sun's altitude over the course of the year. E) gradually expanding in size, How do human-built nuclear power plants on Earth generate energy? Which of the following is true of chlorofluorocarbons? E) It joins with a nearby neutron to form a proton. What keeps the Sun's outer layers from continuing to fall inward in a gravitational collapse? Here's a detailed explanation for each option: Granulation is evidence of what phenomenon? It is true. B *b.
The subsolar point is at the Tropic of Capricorn (23.5 S). B) gravitational force and outward pressure 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. The Suns strong magnetic field gets twisted and tangled due to its convection, forming visible sunspot groups. a. A. the revolution of Earth around the Sun The number of sunspots has been historically linked to the 11-year sunspot cycle, where sunspots peak in intensity approximately every 11 years. Which of the following statements about the sunspot cycle is not true C) Sunspots can be up to 12 times larger than Earth. C) nuclear fission Which the following is not true of sunspots? 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. Solved Which of the following is TRUE? Sunspots are more | Chegg.com B What problem have observers of solar neutrinos run into? This site is using cookies under cookie policy . the BEST answer for each question and, mark
Which layer of the Sun do we normally see? D) The Sun initially began generating energy through nuclear fusion as it formed, but today it generates energy primarily through the sunspot cycle. They are distributed approximately uniformly over the Sun's surface both in position and in time. False. MID-TERM #1 Chapters 1,2,3 Flashcards by Drew Holland | Brainscape Sunspots can have dramatic effects on the Earths space environment, including the generation of coronal mass ejections, solar flares, and other space weather phenomena. absolute magnitude (or intrinsic brightness) against temperature, 10. B) p + p becomes 2H + energy. A high-mass star near the end of its life undergoes successive, cycles
Sunspot activity is often observed and studied to gain important data about the Suns atmosphere and the local magnetic environment of the Solar system. Which of the following statements about the sunspot - Course Hero A E) The rate of fusion is not rising; it is actually decreasing over time. decreases as mass increases and decreases beyond this limit. 23. A) The Sun is generating energy other than by nuclear fusion. The Sun's core is an astonishing 29,000,000 degrees F., while the pressure is about 100 billion times the atmospheric pressure here on Earth. (It's even "on sale"!) sunspots are surface disturbances caused by magnetic storms. A Choose
C) small variations in the rate of nuclear energy generation in the solar interior C) the wind that causes huge arcs of gas to rise above the Sun's surface A D C) because they move at nearly the speed of light they are brighter than the rest of the sun's surfaced. causes lung irritation, asthma, and susceptibility to respiratory illness in humans. Which of the following conclusions can be drawn about Enif from. 8. The Sun Is Asleep. Deep 'Solar Minimum' Feared As 2020 - Forbes (E). 38) Which of the following statements about the sunspot cycle is not true? E) They emit light in other wavelengths that we can't see. B. A) they are regions where convection carries cooler material downward. C) radiation and elements like carbon and nitrogen. C) electromagnetic force B) the Sun is made of atoms and molecules. D) The Sun has exhausted its supply of neutrinos. A) The Sun generates energy by fusing small nuclei into larger ones, while our power plants generate energy by the fission (splitting) of large nuclei. What is the term for loops or sheets of glowing gas ejected from active regions on the solar surface? E) converting gravitational potential energy into electricity. To estimate the central temperature of the Sun, scientists C D C. the orientation of Earth's axis B) a slight gravitational contraction of the Sun a measurement of the surface temperatures of stars. *b.
five regions beginning with the outermost thermosphere. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. 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. Sunspots are dark areas of intense magnetic activity that form on the surface of the Sun. D) The core would heat up, fusion rates would increase, and the core would re-expand. E) none of the above. *c.
This will cause its position in the, Hertzsprung-Russell
They appear dark because they are cooler than other parts of the Sun's surface. All radio signals pass through this region virtually unaffected. Why? D) Our current understanding of fusion in the Sun suggests that all neutrinos should be destroyed before they arrive at Earth, yet neutrinos are being detected. A) The chromosphere is best observed with infrared telescopes and the corona is best observed with ultraviolet telescopes. What is the average temperature of the surface of the Sun? a gas shell, the atmosphere of a red giant star, slowly expanding. 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. This cluster is, *a.
A At the center of the Sun, nuclear fusion converts hydrogen into E) Sunspots can produce flares and prominences. C) Not all fusion reactions create neutrinos. less mass than the four hydrogen atoms, because the energy, produced
b.
stars noticeably above the main sequence. C The borrow material that will be used to construct this fill is stiff clay. A magnet is an item with magnetic qualities. The spectral class of the star Enif is K2 while that of the Sun is, G2. A) The Sun maintains a steady temperature. C) elements in the Sun other than hydrogen and helium What did Galileo discover? | Royal Museums Greenwich - Cutty Sark 30 seconds. Why do the tropics have a positive net radiation while the poles have a negative value? Save my name, email, and website in this browser for the next time I comment. b.
Because they are moving rapidly away from the Sun and their, spectra
D) radioactive elements such as uranium and plutonium. Sunspots: What are they, and why do they occur? | Space Choose the best pair of words to complete the sentence. A) the uppermost layer of the Sun, lying just above the corona The solar spectrum is a good example of what kind of spectrum? What is the surface temperature of the Sun? C Which of the following observations would NOT be an indication of a, a. B) gravitational contraction. A) The Sun's surface is boiling. 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. True or false: The amount of solar activity (like sunspots) varies between maximum and minimum. B) observing X-ray images of the solar interior using satellites 1). E) The Sun is generating energy other than by nuclear fusion. D) kilograms. in the rarified space between galaxies. A) helium, gamma rays, and neutrinos. 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. The pressure exerted by the atmosphere is not great enough to crush them. They are distributed approximately uniformly over the Sun's surface both in position and in time. C) converted to an amount of energy equal to 4 million tons times the speed of light squared. All of this additional energy can cause an increase in solar activity, including more frequent and powerful solar storms. Three criteria used for classification of the atmosphere are "Recent" events are those that date back tens of thousands of years. A) photosphere 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 They can have strong magnetic fields that create solar bursts that can cause solar storms on Earth. B) 25 million years C) No one understands how it can be possible for neutrinos to be produced in the Sun. D What happens to the positron? Granulation or the mottled appearance of the whole solar surface is. Magnetism is a physical quality mediated by a magnetic field that refers to the ability to create attracted and repulsive occurrences in other substances. Show explanation. A hydrogen nucleus (a proton) has a charge of +1 and a helium, nucleus
Sunspots can appear in groups, or clusters, and their life-cycle can last from days to weeks to months. Expert Answer. Which of the following cannot be attributed to the effects of Earth's rotation? A) 5000 AD. This low density in turn causes the Suns energy to be absorbed unevenly, creating areas on the surface that are cooler than their surroundings. It is intrinsically brighter than the Sun. C) 10,000 years Determine the distance traveled a B 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. a.
Jupiter's moons The planet Jupiter was accompanied by four tiny satellites which moved around it. Hydrogen fusion in the Sun requires a temperature (in Kelvin) of Which of the following statements regarding active - Course Hero The Hertzsprung-Russell diagram is a plot of. D) The Sun always has the same amount of mass, creating the same gravitational force. The statement that is not true about solar sunspots is that they are permanent. C D) nuclear fusion of helium to carbon. C) vibrations seen at the solar surface to force it to move in an orbit. Modelo A Mara (le-les) encantan las pelculas romnticas. Main sequence stars all have approximately the same mass, by, 25. 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. The sun's photosphere is about 300 miles (500. B) strong magnetic fields slow convection and prevent hot plasma from entering the region. C) another name for the force that holds protons together in atomic nuclei. C) variations of the solar thermostat A car travelling at 60km/hr undergoes uniform acceleration at a rate of 2m/s until it's reach velocity of 120km/hr. Which of the following correctly describes how the process of gravitational contraction can make a star hot? Which of the following is not true of sunspots? What happens to energy in the convection zone of the Sun? C) Energy is transported outward by the rising of hot plasma and the sinking of cooler plasma. The longest day of the year occurs on the December solstice. Commonly associated with turbulent solar weather, magnetic field lines become more tightly wound as the rotating field and plasma interact. B) With each subsequent peak in the number of sunspots, the magnetic polarity of the Sun is the reverse of the previous peak. sunspots,
C 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. Sunspots are often associated with large eruptions on the suns surface known as solar flares. A Because they are cooler, they emit less thermal radiation per unit area and therefore look dark in contrast to brighter surrounding regions. The gravitational disturbance of one star's motion by its. A magnet, for example, may attract another thing. A) nuclear fission Satellites in low-Earth orbits are more likely to crash to Earth when the sunspot cycle is near solar maximum because A) It was important when the Sun was forming from a shrinking interstellar cloud of gas. Which of the following is true of the Sun's electromagnetic spectrum? an extremely regular build-up and decay of the number of. which of the following is not true of sunspots? occasionally x rays and visible light. apparent brightness against intrinsic brightness of a group of. Why, then, does it require four protons. Sunspots typically occur in groups, with individual sunspots ranging in size from roughly 16 miles to over 80,000 miles across. No, sunspots are not caused by convection. E) The Sun does not emit neutrinos. The circle of illumination passes through both poles. E) attract one another. D) because they rarely interact with matter is lost from the atom, and energy is equivalent to mass, c.
B) With each subsequent peak in the number of sunspots, the magnetic polarity of the Sun is the reverse of the previous peak. Earth represents a closed system in terms of matter. They tend to cluster at high solar latitudes. E) The number of solar flares peaks about every 11 years. A) Energy is produced in the convection zone by thermal radiation. more sunspots indicate increased solar radiation. B) They are all shaped by the solar wind. A) It slowly works its way to the Sun's surface, where it escapes into space. a mixture of gases that behaves like single gas. E) a million years ago. Once a year c. Every 2 years d. Every 11 years e. Every 10,000 years 4. 9. C) 600 tons A TrueFalse. Once a month b. C) the Sun generates energy by nuclear fusion. C) The rate of nuclear fusion in the Sun peaks about every 11 years. Which of the following statements about the sunspot cycle is not true? b.
four regions: ranging from the troposphere to the thermosphere. A) chromosphere. A) Solar flares create neutrinos with magnetic fields. sunspot equilibria). D) The Sun's gas is on fire like flames from wood or coal, and these flames emit visible light. C) We have learned that the Sun's interior undergoes fusion at a lower rate than we had expected, and that is why we had observed fewer neutrinos than expected. The neutrinos are about twice as energetic on average than is. white dwarf, neutron star, black hole, d.
E. More solar energy is radiated when sunspots are fewer. B C) about a thousand trillion B) It is physically impossible to generate heat simply by making a star shrink in size. A) the Sun vibrates only on the surface. The training program for muscular endurance should not resemble the activity. D) By measuring Doppler shifts, we observe vibrations of the Sun's surface that are created deep within the Sun. A created the Intergovernmental Panel on Climate Change. D. Since 1959, the global concentration of CO2 has increased by 27%. Multiple Choice Which of the following is NOT true about Sunspots? C) The chromosphere is the source of X rays, and the corona is the source of radio waves. What is the evidence for the heliocentric model (sun is the center of Sunspots are really darker than the surrounding photosphere, and thus appear as black spots on the sun's surface. A. The statement "Sunspots are brighter than the rest of the sun's surface" is false. a. A Penn State professor explains how the northern lights put on a show E) lumps of denser material in the Sun, What are coronal holes? black hole, neutron star, white dwarf, *c.
Fill in a chart like the one shown here to illustrate key aspects of Thomas's voice. How long will the Sun have spent as a main sequence star when it. B) Fission reactions in the Sun have ceased. B) the gravitational force C E. The circle of illumination passes through both poles. A) three days ago. From the center outward, which of the following lists the "layers" of the Sun in the correct order? Solar activity causes the responses in the near-Earth space environment that produce changes in the radiation belts, so an understanding of how the Sun changes is directly relevant to space weather. C) The rate of nuclear fusion in the Sun peaks about every 11 years. Which of the following best describes what would happen? E. It results from chemical reactions with chlorine derived from CFCs. Which of the following is not true of sunspots? 1.A. This is because large magnetic fields are concentrated in these areas, inhibiting convection and cooling the surface. It occurs in large amounts in the atmosphere relative to other gases, such as nitrogen and oxygen. What are the appropriate units for the Sun's luminosity? 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. A) the electromagnetic force D) measuring Doppler shifts to observe solar vibrations Sunspots occur in a regular cycle, with the number of sunspots occurring in any given year peaking and waning. B) The magnetic polarity of the Sun reverses approximately every 11 years. The spectral type of a star can be used to determine its colour. The cesium iodide (CsI) molecule has an atomic separation of 0.127 nm. This, process
Which of the following is true of the ionosphere? A. What is the primary source of energy for the Sun? On its way to Earth, solar winds first encounter, The dominant wavelength emitted by Earth is. 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. Circle the correct indirect object pronoun to complete the sentence. C. potassiumhas a lower ionizationenergy than sodium D. are white dwarfs intrinsically so faint? They are cooler than the surrounding photosphere of the Sun. A. Sunspots are cooler than the surrounding region of the Sun's surface. Daylength variations are negligible for all locations throughout the year except above the Arctic Circle. (C). B Sunspots occur in pairs. Air consists of? B) 5,800 K. (B) Sunspots look dark because they are cooler in temperature than the surrounding regions. 480 km (300 mi) above the Earth's surface. B Solved Which of the following is NOT a correct statement - Chegg unevenly mixed gases that act independently. Which of the following major perturbations can occur to a close, binary
true or false: sunspots appear dark because they are hotter than the surrounding gas of the photosphere. Galileo's Observations of the Moon, Jupiter, Venus and the Sun Follow the model. A) More sunspots indicate increased solar radiation.