which of the following is not true of sunspots

The dark spots are caused by regions of intense magnetic field, which are up to 2,500 times greater than the field of the earth. Briefly explain why sunspots are cooler than surrounding regions of the Sun and why they look dark in photos. A A. Sunspots are cooler than the surrounding region of the Sun's surface. D which of the following is not true of sunspots? D Choose the best pair of words to complete the sentence. They can produce flares and coronal mass ejections. How much mass does the Sun lose through nuclear fusion per second? D) 6 H 1 He + energy. A) About a thousand trillion neutrinos are passing through your body every second. The spectral type of a star can be used to determine its colour. Solar radiation that is intercept by Earth is called. 1). C) one thousand years ago. Which of the following correctly compares the Sun's energy generation process to the energy generation process in human-built nuclear power plants? D C) Heat is generated when gravity contracts, because gravity is an inverse square law force. additional B) about 700,000 kilometers (the radius of the Sun) D) kilograms. Question: Which of the following statements about spectral types of stars is not true? C a. Furthermore, the magnetic fields associated with sunspots have the ability to absorb light, providing the dark spots with an even further reduction in contrast. Why do sunspots appear dark? They often occur in pairs of opposite magnetic polarity. The relationship between mass and luminosity of stars on the main. Most of the energy produced in the Sun is released in the form of visible light from the photosphere. B) The chromosphere is the source of infrared light, and the corona is the source of ultraviolet light. 4. B) plasma. B) one hundred years ago. Which of the following statements is not true? It increases to 4 times its original magnitude. B On a power pole down the block is a transformer designed to step down the voltage for household use. C A D. the timing of Earth's perihelion and aphelion Which of the following is true of the September equinox? 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? B) ten years ago. C. b. D Save my name, email, and website in this browser for the next time I comment. A) the specific set of nuclear reactions through which the Sun fuses hydrogen into helium. What is the term for loops or sheets of glowing gas ejected from active regions on the solar surface? Which of the following is not one of the reasons for Earth's seasonality? 6. finally Experts are tested by Chegg as specialists in their subject area. Finally, we can test our knowledge of nuclear physics and the fusion process in the core using observations of solar neutrinos. a band running from upper right to lower left, 21. For the last few years we've been at what we call solar minimum. A) regions on the photosphere where magnetic lines poke through, creating the cooler areas of the sunspots (D). What problem have observers of solar neutrinos run into? They are cooler because their strong magnetic fields suppress convection and prevent hotter material from flowing into them. 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. E. All radio signals pass through this region virtually unaffected. Solution. B. Sunspot occurrence has a regular cycle, with an average of 11 years between maximums. They are distributed approximately uniformly over the Sun's surface both in position and in time. C) The Sun initially began making energy through chemical reactions. The Sun will exhaust its nuclear fuel in about New resources and matter are being added to Earth's systems all the time. based on the principle that surfaces must be physically handled and directly measured for study. Which of the following is characterized by the longest wavelengths, 12. 5) Which of the following statements about the sunspot cycle isnottrue? Which of the following is true regarding acid deposition? A They tend to cluster at high solar latitudes. D) 600 million tons TrueFalse. 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. The Milky Way Galaxy contains over 300 million stars Our solar system consists of 8 planets, more than 100 moons, drawf planets, asteroids, and meteors The planetesimal hypothesis pertains to the formation of the planets. They are distributed approximately uniformly over the Sun's surface both in position and in time. What is the evidence for the heliocentric model (sun is the center of the solar system) and evidence why the Geocentric model (the universe revolves around the earth) is wrong? D) they are more likely to have their electronics "fried" by a solar flare during solar maximum. *a. The sun has an 11-year cycle of sunspots on its surface. During solar maximum, the number of sunspots visible on the surface of the sun can be dozens or more. Sunspots are darker because they are cooler than the surround area. Solar sunspots are temporary features on the photosphere of the Sun that appear visibly as dark spots compared to surrounding regions. D) The electron neutrinos created in the Sun's core change into another type of neutrino that we did not detect. two zones that absorb radiation from the Sun. B) millions of degrees. 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. Which of the following best describes what would happen? How is the energy difference equalized? D) The Sun was born with a supply of neutrinos that it gradually emits into space. 3. luminosity is independent of the stellar mass. A) The Sun is generating energy other than by nuclear fusion. C) about one light year old, because the G and K stars are already evolving off (away, c. B They are caused by intense magnetic fields that disrupt the flow of plasma, which is a superheated, electrically charged state of matter formed from the gases of the Sun. Which of the following is not true of sunspots? Both natural and anthropogenic gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. 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 layer of the Sun do we normally see? A) several thousand years ago. A) 3 H 1 Li + energy. A) The rate at which fusion occurs would increase, leading to a contraction of the core, which would in turn cause the temperature to rise even further. D) a few hundred thousand years ago. Which of the following is not true of sunspots? D) It predicted that Earth would also shrink in size with time, which would make it impossible to have stable geology on our planet. stellar . During this time, the number of spots can vary from a few to hundreds at a time. What was the major drawback to this idea? a. 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. the difference in amount of incoming shortwave and outgoing longwave radiation. Daylength is longest on the summer solstice and is shortest on the winter solstice. Energy from the core of the Sun first travels slowly through the convection zone and then much faster through the radiation zone. E) all of the above. Which of the following is currently a big mystery to solar physicists? B. ionization energy is the amount of energy used to add an electron to an atom. Sunspots are cooler than the surrounding solar surface because D) gravitational contraction A) because there are so rare 30 seconds. Because of the electromagnetic force, the two protons will (b) Find the frequency of the photon absorbed in the J = 1 to J = 2 transition. D) tunnels in the outer layers of the Sun through which photons can escape more quickly than through the radiation zone radiation but only line emissions, like a low density, 18. Sunspots can appear in both the northern and southern hemispheres of the Sun, and usually occur in pairs of opposite magnetic polarity. The Sun's surface seethes and churns with a bubbling pattern. D. They are surface disturbances caused by magnetic storms. These heated the interior enough to allow gravitational contraction and nuclear fusion to occur. D. Air pressure at sea level is approximately 1013.2 mb. B) red A) the electromagnetic force What is the average temperature of the surface of the Sun? B. the oblate spheroidal shape of Earth answer choices. Which of the following is not true regards to Earth as system? The dam has a height H = 12 m and a width W = 10 m. Assume that the density of the water is = 1000 kg/m . How thick would you need to make this shield to ensure that it can stop a neutrino? C) They are holes in the solar surface through which we can see to deeper, darker layers of the Sun. A. the monitoring of a distant object without physical contact. E) they are caused by processes similar to those that create earthquakes, Imagine that you are trying to stop neutrinos with a lead shield. E) Sunspots can produce flares and prominences. Sunspots are cooler areas on the suns surface that are relatively darker than the surrounding surface and are caused by intense concentration of magnetic fields. Why are humans and other living things not crushed by the pressure of the atmosphere? produced B Day-length decreases from the winter solstice until the vernal equinox, when it begins to increase. very young, because the G and K stars are still evolving towards, b. b. The interaction between the magnetic fields and the solar plasma can cause sunspots to become unstable, leading to flares, prominences, and other solar eruptions. D) They actually are fairly bright, but appear dark against the even brighter background of the surrounding photosphere. B) at the same temperature but denser than the surface. E) The rate of nuclear fusion in the Sun peaks about every 11 years. Based on function, the atmosphere has 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. A) It slowly works its way to the Sun's surface, where it escapes into space. In the late 1800s, Kelvin and Helmholtz suggested that the Sun stayed hot due to gravitational contraction. sequence If the Sun's core suddenly shrank a little bit, what would happen in the Sun? A) the Sun is made of material that acts like a liquid acts on Earth. a. is ineffective because so few countries have ratified it. As the formation of sunspots approaches the Sun's equator, the polarity of the Sun flips. At the beginning of the period, sunspots form at higher latitudes. A) blue Briefly describe what you will see as you descend. They change size b. E) gradually expanding in size, How do human-built nuclear power plants on Earth generate energy? C d. D) The planets need more and more energy to maintain any life on them as time goes on, and therefore the Sun must bet hotter. In the center section near to the Sun's position, with lower mass, d. B ) True False Question 24 (2 points) Which of the following is the correct order for the stages of evolution of a low-mass star, like the Sun? Another way that we can learn about the Sun is by capturing the particles in the solar wind that come from the Sun. D A) 1,000,000 K. and Right now, about half the amount of hydrogen in the core of the Sun has been fused into helium. 28. Solely natural gases, particles, and other substances in amounts that cause damage to the environment or are harmful to humans. - In this case, circle the word le. white dwarf, neutron star, black hole, d. A The rate of fusion then determines how many neutrinos should be produced by the Sun, and theories estimate how many of these should be detected here on Earth. E) We have no evidence, just informed guesses. Which of the following choices is not a way by which we can study the inside of the Sun? Which of the following best explains why nuclear fusion requires bringing nuclei extremely close together? Why are neutrinos so difficult to detect? E) The rate of fusion is not rising; it is actually decreasing over time. They collapse and become black holes. C. The depletion is restricted to the arctic and antarctic regions. While the quality of observations was good, consistent observation was lacking. A) helioseismological fluctuations. A "star" appears to become periodically dimmer for a few hours at, b. Air pressure at sea level is approximately 1013.2 mb. Describe some of the early theories for why the Sun shines and why they are no longer accepted as viable. And at minimum you have a minimum number of sunspots, and at maximum, a maximum. Over time, solar activityand the number of sunspotsincreases. B) hydrogen compounds such as methane. B) several hundred thousand years ago. Which of the following types of stars or stellar remnants can have a, mass C. They can be larger in diameter than Earth. D) neutrinos from the solar core reach the solar surface easily. Sunspots are dark spots that appear on the surface of the sun and typically live for days to weeks. As you plunge through the "surface" of the Sun, the photosphere, the temperature will be a slightly cooler 5,800 K, compared to the outer layers, and you will see the slightly cooler regions of sunspots and the granulation on the surface caused by the convection underneath. C. The region principally absorbs gamma rays, X-rays, and interacts with the solar wind. Which of the following is not true of sunspots? ________ is used in a barometer because ________. gases in the radiation zone. Similarly if the solar core were to decrease in temperature, the nuclear fusion rate would plummet and gravity would overcome thermal pressure and contract the core. This means either that our models of the Sun are not completely correct or that we don't understand neutrinos as well as we thought we did. Sunspots occur in a regular cycle, with the number of sunspots occurring in any given year peaking and waning. impossible, because one cannot have cool stars above the main. D) about 14 billion light years (the size of the observable universe) B) by observing the sizes of sunspots: Bigger sunspots mean a stronger field The specific type of fusion that occurs inside of the Sun is known as proton-proton fusion. C) magnetic fields trap ionized gases that absorb light. Which of the following is not true of carbon dioxide? C Why does the Sun emit neutrinos? B C) Neutrinos have no electrical charge. Which of the following statements about neutrinos is not true? E) radiation zone. What do sunspots, solar prominences, and solar flares all have in common? sunspot equilibria). A) nuclear fission. The subsolar point is at the Tropic of Capricorn (23.5 S). B) 3 He 1 C + energy. more mass than the four hydrogen atoms, because energy is. C) The core would heat up, causing it to radiate so much energy that it would shrink even more. *b. A) variations in the height of the solar surface A) strong force Sunspot activity is often observed and studied to gain important data about the Suns atmosphere and the local magnetic environment of the Solar system. d. A) 6 H becomes 1 He + energy. As magnetic activity increases, the sunspots form lower down and in greater numbers. Earth represents a closed system in terms of matter. E) the weak force. c) Determine how many gallons of water will need to be added to each truck. are white dwarfs intrinsically so faint? Radio waves from GPS are strengthened in the ionosphere. C) We have sent probes below the surface of the Sun. Every material is composed of microscopic components known as atoms. Laura miraba a Elin con amor. How nuclear fusion turns hydrogen to helium b. They occur in regions of lower-than-average magnetic fields.
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