Which of the following statements about the cosmic background radiation is not true? 1 answer. 10. After about 50,000 years, the density of matter exceeded the density of radiation for the first time, eventually dominating the universe. Missions Study Cosmic Background Radiation. That is why those living in Denver, Colorado (altitude of 5,280 feet) receive a higher annual radiation dose from cosmic radiation than someone living at sea level . It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. d. the cosmic microwave background radiation pushes them 22. Timeline of the . Mostly the cosmic microwave background The radiation from stars and galaxies is much weaker It was not always this way The early universe was radiation dominated density of radiation exceeded density of matter. ___35.In which part of the sky is the cosmic background radiation brightest? When the CMB was set loose, only 400,000 years after the Big Bang, the universe was very hot and dense and the CMB had the same amount of energy as that produced by a light bulb. Differences in elevation, atmospheric conditions, and the Earth's magnetic field can change . How was Edwin Hubble able to use his discovery of a Cepheid in Andromeda to prove that the "spiral nebulae" were actually entire galaxies? f. cosmic background radiation. Which of the following are true of the cosmic microwave background radiation (CMB) and which are false? Select all the true statements about the cosmic microwave background radiation. Which of the following statements about the cosmic background radiation is not true? Almost all galaxies are red-shifted C. The sound from the bang echoes though the universe D. The universe is expanding. . II The peak wavelength of radiation is longer for hotter objects than for cooler objects. Which of the following statements about the cosmic background radiation is not true? Ungraded. The expansion of the Universe has cooled the radiation and stretched its wavelengths. Being more energetic than visible light, X-rays are able to penetrate soft tissues but not bones, and so allow us to make images of the shadows of the bones inside us. 3. C) a star . B) It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. All distant galaxies are moving away from ours because our galaxy is at the center of the universe. True. What is the universe's estimated age? A) A nucleon inside a nucleus has a lower mass than a nucleon outside of the nucleus. In boxes 1-5, chose. Cosmic microwave background radiation.There are several aspects of the Big Bang Theory supported by observed phenomena:The current universe is presumed to have a beginning state.Some galaxies . It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. which of the following statements about the cosmic background radiation is not true? Question #23MultipleChoice Score: In an ecosystem, energy from . Which of the following statements about the cosmic background radiation is not true? Dense clouds of dust have blocked most of it. A) It had a much higher temperature in the past. Which statement about the cosmic microwave background is not true? WMAP was launched in 2001, and Planck was launched in 2009. Cosmic microwave background radiation fills the entire Universe and can be detected day and night in every part of the sky. Do the following statements agree with the information given in Reading Passage? Erik M. Leitch of the University of Chicago explains. Tick ( ) the boxes next to the true statements. Today, CMBR is very cold due to expansion and cooling of the Universe. Blackbody Radiation. Which of the following statements about the cosmic background radiation is not true? C) It had a much higher temperature in the past. The Cosmic Microwave Background radiation, or CMB for short, is a faint glow of light that fills the universe, falling on Earth from every . (a) It has a temperature of about 3 degrees K about absolute zero. It's only 2.725 Kelvin (-270.4 °C), which is only 2.725 °C above absolute zero. Cosmic microwave background. 7. III At all frequencies, hotter objects emit more . NOT GIVEN if there is no information on this. Which of the following statements BEST describes cosmic microwave background radiation? b. false. Ionizing radiation comes from x-ray machines, cosmic particles from outer space and radioactive elements. Q. A) It has a temperature of about 3 degrees K above absolute zero. answer choices . Tick ( ) the boxes next to the true statements. Mostly the cosmic microwave background The radiation from stars and galaxies is much weaker It was not always this way The early universe was radiation dominated density of radiation exceeded density of matter. Hydrogen and helium are in the same ratio throughout the universe. Which of the following statements about the cosmic background radiation is not true? It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. It's the border of the known universe. Which statement about the cosmic microwave background is not true? The first of these was the Cosmic Background Explorer (COBE). B) It appears essentially the same in all directions (it is isotropic). Q. Evidence supporting the Big Bang theory includes the presence of cosmic microwave background radiation, visual observation of redshifted objects and the abundance of primordial elements found throughout the universe. Which of the following statements about the cosmic background radiation is not true? It is found only in some sections of the universe. A blackbody is a theoretical or model body which absorbs all radiation falling on it, reflecting or transmitting none. Which of the following statements about the cosmic background radiation is not true? 9. Definition It is the result of a mixture of radiation from many independent sources, such as stars and galaxies that formed within the first billion years of the Big Bang. (b) It is the result of moisture of radiation from many independent sources, such as stars and galaxies. The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. Tags: Question 16 . C) A nucleon has a higher energy inside a nucleus, and releases it when it undergoes nuclear reactions. asked 6 days ago in Other by megha00 Expert (36.8k points) 0 votes. Tags: Question 14. (d) It is isotropic. 19) Which of the following statements about the cosmic background radiation is not true? 14) Which of the following statements about thermal radiation is always true? Cosmic background radiation is electromagnetic radiation from the Big Bang.The origin of this radiation depends on the region of the spectrum that is observed. The subsequent discovery of both the Big Bang expanding evolution of the universe and the cosmic microwave background radiation (CMB), then provided data which could be used to define a coordinate system relative to which the largest scale features of the universe could be most simply described. a. The following quantities were measured: (1) the spectrum of the 3 K radiation over the range 100 micrometers to 1 cm; (2) the anisotropy of this radiation from 3 to 10 mm; and, (3) the spectrum and angular . This is the Cosmic Microwave Background, electromagnetic radiation from almost 13.8 billion years ago, immediately after the Big Bang. (A) equally bright in all parts of the sky. The first of these was the Cosmic Background Explorer (COBE). 9. C) It had a much higher temperature in the past. Electromagnetic radiation with wavelengths between 0.01 nanometer and 20 nanometers is referred to as X-rays. A) It has a temperature of about 3 degrees K above absolute zero. As the theory goes, when the universe was born it underwent a . The radiation comes from all directions in space. Hydrogen and helium have many current uses today. E cosmic microwave background radiation. A) It has a temperature of about 3 degrees K above absolute zero. Q. (d) It is isotropic. Differences in elevation, atmospheric conditions, and the Earth's magnetic field can change . Which of the following would not produce a close approximation to a thermal radiation spectrum? The latter is caused by the peculiar velocity of the Sun relative . True False today has a temperature of 2.73 K comes from all directions consists of many spectral emission lines fills distant regions of the Universe, but not nearby regions discovered in the 1960s with a radio telescope B) It is the result of a mixture of radiation from many independent sources, such as stars and galaxies that formed within the first billion years of the Big Bang. A) It has a temperature of about 3 degrees K above absolute zero. It is the residual heat of creation-the afterglow of the big bang-streaming through space these last 14 billion years like the heat from a sun-warmed rock . 35. . SURVEY. Cosmic microwave background radiation (CMB) is the faint background radiation that astronomers pick up with sensitive radio telescopes. The original particles of radiation that were present during the Big Bang . The Big Bang theory is the prevailing cosmological model for the universe. leftover heat radiation from the Big Bang. e. (B) toward the Virgo cluster (C) toward the center of the universe (D) toward the spot where the Big Bang took place ___36. a. Cosmic background radiation is uniformly distributed residual radiation that resulted from the Big Bang. In 1992, the COBE team announced that they had mapped the primordial hot and cold spots in . Your email address will not be published. g. dark matter. D) you . This cosmic background radiation image (bottom) is an all-sky map of the CMB as observed by the Planck mission. In the past, the temperature of the universe was ____. Everyone receives the same background radiation dose. Space (cosmic rays) 240 TOTAL 2500 (a)€€€€ Only two of the following statements are true. It was a serendipitous discovery: the scientists were not explicitly looking for extragalactic radiation, let alone radiation of such import, but rather were led to the unavoidable conclusion that there was an isotropic source of "noise" answer choices. The cosmic background radiation provides direct evidence that the universe did expand from a dense, hot state, for this is the condition needed to produce the radiation. SURVEY . The wavelength of this radiation appears to be the same no matter where in space that it comes from. h. general relativity. SURVEY . which of the following statements about the cosmic background radiation is not true? Support for the Big Bang theory infers that all . The three panels show 10-square-degree patches of all-sky maps. All of the following are evidence for the big bang except: A. Cosmic background radiation B. 1 answer. B) It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. The following quantities were measured: (1) the spectrum of the 3 K radiation over the range 100 micrometers to 1 cm; (2) the anisotropy of this radiation from 3 to 10 mm; and, (3) the spectrum and angular . B) It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. Statement II: Fossil fuels are a cheap source of energy. 45 seconds. Hydrogen atoms have condensed on it and chilled it. The cosmological constant has "squashed" its wavelengths and cooled it. A hot object emits more radiation per unit surface area than a cool object Betelgeuse is the bright red star representing the left shoulder of the constellation Orion. (a) The CBR shows that the early Universe was highly (but not perfectly) homogeneous and isotropic. It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. All of the following statements about the cosmic microwave background radiation are true, except for which one? answer choices . The evidence which pretty much established the theory for most astronomers was the discovery of the 3K cosmic background radiation (CBR) aka the Microwave Background Radiation (MBR).There are many . A) It has a temperature of about 3 degrees K above absolute zero. . which of the following is not a true statement about atp. (a) It has a temperature of about 3 degrees K about absolute zero. Multiple choice: Which one of the following statements about the cosmic background radiation (CBR) is false? Report an issue. After about 50,000 years, the density of matter exceeded the density of radiation for the first time, eventually dominating the universe. Radiation levels increase as you get closer to the source, so the amount of cosmic radiation generally increases with elevation. leftover heat radiation from the Big Bang. Cosmic microwave background (CMB), electromagnetic radiation filling the universe that is a residual effect of the big bang 13.8 billion years ago. Ionizing radiation can affect the atoms in living things, so it poses a health risk by damaging tissue and DNA in genes. Which of the following statements about thermal radiation is always true? Today, CMBR is very cold due to expansion and cooling of the Universe. Tags: Question 22 . When the universe was first born, it was foggy, not clear . Which of the following is not a feature of Cosmic Microwave Background Radiation? c. Cosmic background radiation is the . TRUE if the statement agrees with the information. In 1992, the COBE team announced that they had mapped the primordial hot and cold spots in cosmic background radiation. which of the following statements about the cosmic background radiation is not true? B) a filament in a standard (incandescent) light bulb . Natural background radiation comes from the following three sources: Cosmic Radiation; Terrestrial Radiation; Internal Radiation; Cosmic Radiation. The cosmic microwave background radiation is an emission of uniform, black body thermal energy coming from all parts of the sky. B) It has a temperature of about 3 degrees K above absolute zero. c. It indicates that the universe was once very hot. How does the abundance of hydrogen and helium support the Big Bang Theory. (a)Only two of the following statements are true. D) It is the result of a mixture of radiation from many independent . i. dark energy. (b) There are small variations in the CBR that correspond to slight differences in density from which galaxies, superclusters, and voids eventually formed. (c) It had a much higher temperatures in the past. j. cosmology. Its discovery and detailed . B) The number of nucleons changes in a nuclear reaction, therefore the mass changes. It was discovered by Edwin Hubble. Which of the following is not true of the cosmic background radiation? Which statement about the cosmic microwave background isnottrue?A) It is the result of a mixture of radiation from many independent sources, such as stars andgalaxies.B) It is thought to be radiation that began its journey to our telescopes when the universe wasabout 380,000 years old.C) With the exception of very small variations, it appears essentially the same in all directions inwhich we . . The radiation is isotropic to roughly one part in 100,000: the root mean square variations are only 18 μK, after subtracting out a dipole anisotropy from the Doppler shift of the background radiation. Which one of the following statements about the cosmic background radiation is FALSE a) The CBR shows that the early universe was highly (but not perfectly) homogeneous and isotropic b) There are small variations in the CBR that correspond to slight differences in density from which galaxies, superclusters and voids eventually formed Which of the following statements concerning cosmic background radiation is true? I Stellar objects emit radiation over a wide range of frequencies. It is the result of a mixture of radiation from many independent sources, such as stars and galaxies. a) Statement -I is true, Statement -II is true and Statement -II is the correct explanation of Statement -I It is a hypothetical object which is a "perfect" absorber and a "perfect . d. It can't be explained by the steady state theory. . Wilson. answer choices. Which statement about the cosmic microwave background is NOT true? 1 Introduction While radiation is a term that most people have heard, the basic facts about radiation are much less familiar. The purpose of the Cosmic Background Explorer (COBE) mission was to take precise measurements of the diffuse radiation between 1 micrometer and 1 cm over the whole celestial sphere. Categories English. The shape of the spectrum from this radiation (black body curve) yields a temperature of 2.7K. With a traditional optical telescope, the space between stars asked Sep 24, 2016 in Physics & Space Science by craftychris. _____ Is the following sentence true or false? It's only 2.725 Kelvin (-270.4 °C), which is only 2.725 °C above absolute zero. Definition It is the result of a mixture of radiation from many independent sources, such as stars and galaxies that formed within the first billion years of the Big Bang. Tags: Question 7. A) It has a temperature of about 3 degrees K above absolute zero. (b) It is the result of moisture of radiation from many independent sources, such as stars and galaxies. 60 seconds . Which of the following statements about the cosmic background radiation is not true? The first spacecraft, launched in 1989, is NASA's Cosmic Background Explorer, or COBE.
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