Astronomy and Astrophysics - Astro7N-Test2-F21_ ASTRO 7N, Section 01_ Artistic Universe. Pennsylvania State University. Score 100/100. Correct Answers Indicated.

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Astronomy and Astrophysics - Astro7N-Test2-F21_ ASTRO 7N, Section 01_ Artistic Universe. Pennsylvania State University. Score 100/100. Correct Answers Indicated. Astro7N-Test2-F21: ASTRO 7N, Section ... 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 1/37 Astro7N-Test2-F21 If a red giant appears the same brightness as a red main sequence star, which one is further away? they are at the same distance 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 2/37 it depends on the phase of the Moon Correct! Correct! the red giant the main sequence star we can't tell Question 2 0 / 2 pts Which of the following features, debated by the various authors and artists in your readings for this project as to whether or not it is inevitable in animal evolution, appears in nearly all of David Aguilar's illustrations of speculative extraterrestrial animals?ultraviolet visionbilateral body symmetry resistance to the extreme cold long sharp teeth orrect Answer orrect Answer the ability to fly Question 3 0 / 2 pts Most main sequence starsare more luminous than the Sun 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 3/37 have surface temperatures more than the Sun are more massive than the Sun will live less than 10 million years orrect Answer orrect Answer have smaller radii than the Sun Question 4 2 / 2 pts Star A is 9 times more luminous than Star B. The two stars appear the same brightness. What is true about their distances?Star A is 3 times further away than Star B. Correct! Correct! Star B is 9 times further away than Star A. Star B is 3 times further away than Star A. Stars A and B are at the same distance. Star A is 9 times further away than Star B. Question 5 0 / 2 pts If the Sun had twice its mass, then which of the planets would be in its habitable zone?Venus Neptune 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 4/37 Earth orrect Answer orrect Answer Jupiter Mercury Question 6 0 / 2 pts The above diagram shows some information from NASA Eyes about the planet 55 Cancri e. Which of the following is TRUE about that planet?If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1pe-wilVmRpQXe6W2OE3o9C2j7JSMih_/view?usp=sharing)A year on that planet is less than a day on Earth. Its star is much larger than our Sun. It is a giant planet that is much larger than our Sun. orrect Answer orrect Answer 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 5/37 It is much further from its star than Earth is from the Sun and probably quite cold. It is much smaller than the Earth. Question 7 0 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1PiJI6fsoa79W_QjS2pHpQeSZ- 0Q4NzpS/view?usp=sharing)In what box does the galaxy in the bottom center belong in this Hubble tuning fork diagram?SBcSBa Sa orrect Answer orrect Answer Sc 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 6/37 E1 Question 8 0 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1EhIgge7oczbR5iF4C1BVoNu1cw_Wuwdc/view? usp=sharing)The top star has Luminosity 400 and the bottom star Luminosity 100. At what distance would the top star appear as faint as the bottom star?Distance = 2Distance = 0.5 Distance = 0.25 orrect Answer orrect Answer Distance = 1 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 7/37 Distance = 4 Question 9 2 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1Bu0TuYKSfnGXTNqBIVECGtx20EpyHBnF/view? usp=sharing)In the figure above, how would you calculate the fraction of the mass of the gas in the universe that is in the form of Helium? take 4 × 1 for the mass of Helium, and divide by 48 × 1 for mass of Hydrogen take 48 × 1 for the mass of Hydrogen, and divide by 4 × 4 + 48 × 1 for total mass 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 8/37 take 48 × 4 for the mass of Hydrogen, and divide by 4 × 1 + 48 × 4 for total mass take 4 × 4 for the mass of Helium, and divide by 4 × 4 + 48 × 1 for the total mass Correct! Correct! take 4 for the mass of Helium, and divide by 48 for the mass of Hydrogen Question 10 0 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1oSXsOCRhT2U8u5e4iB4TLTgeVd7MRVKb/view usp=sharing) ? 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 9/37 If they were all formed at the same time, which of the stars in the diagram above will live the longest? orrect Answer orrect Answer B D E A C Question 11 0 / 2 pts 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 10/37 If the image doesn't load for you, click on this link. (https://drive.google.com/file/d/1qtXPfL4vku5gNWR- 5uDOd07oSOsghAcw/view?usp=sharing) The above image shows a parallax measurement for a nearby star. What is the distance to that star? 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 11/37 10 parsec 0.1 parsec 0.3 parsec orrect Answer orrect Answer 1 parsec 3 parsec Question 12 0 / 2 pts The corona of the Sun:it its densest layeris visible during a solar eclipse orrect Answer orrect Answer is the region in which nuclear reactions occur is its convective region is its coolest layer Question 13 2 / 2 pts In the Sun, the proton-proton chain makes 4He, the dominant form of Helium. 4He has 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 12/37 two protons because it is helium and two neutrons to make 4 total particles in the nucleus Correct! Correct! two protons because it is helium and one neutron to make 1 total particle in the nucleus one proton because it is helium and three neutrons to make 4 total particles in the nucleus four protons and no neutrons three protons because it is helium and one neutron to make 4 total particles in the nucleus Question 14 0 / 2 pts What is the final step in the p-p chain?Helium-3 combines with Helium-3 to make Helium-4 and two protonsHydrogen-2 combined with a proton to make Helium-3 orrect Answer orrect Answer a proton combines with a proton to make Hydrogen-2 (Deuterium) Helium-3 combines with Helium-3 to make Helium-6 Helium-4 splits apart into two protons and two neutrons 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 13/37 Question 15 0 / 2 pts In the transit method of finding extrasolar planets, the distance of the planet from its star is found from:what fraction of the light of the star is blocked by the planet when a transit occursKepler’s 3rd law using the period of the planet’s orbit (how often a transit occurs). the spectral type of the star, which is related to which chemical elements are present at different temperatures the Drake equation orrect Answer orrect Answer The luminosity of its star divided by 4 pi times the radius squared. Question 16 0 / 2 pts Which of the following is FALSE?more massive stars have habitable zones closer to them life can exist in the darkness of Earth's seas K type stars can have planets around them the habitable zone has temperatures such that water is in liquid form orrect Answer orrect Answer 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 14/37 less massive stars than the Sun are less luminous than the Sun Question 17 2 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1IETgMbqbblRj2kLAdkM6USjuspXUEOuf/view? usp=sharing)Which of the stars in the diagram above has the shortest main sequence lifetime?D Correct! Correct! A B 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 15/37 C E Question 18 2 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1C- 5HklDmeQ1FpesmvmoDKbGQGmXuMGiV/view?usp=sharing)Which of the stars on this H-R diagram would appear brightest if all are at the same distance?C Correct! Correct! E D 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 16/37 A B Question 19 0 / 2 pts Which is the smallest in size?a white dwarfa black hole a neutron star the Earth orrect Answer orrect Answer the Sun Question 20 0 / 2 pts Radioduranscould survive in the most extreme hot environments like Mercury's hot side could produce high levels of radiation that would destroy any other nearby life forms had a high acid content like battery acid 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 17/37 were found in methane rich ice that erupts from the surface of the sea floor could survive in high levels of radiation that exist on Mars' surface, without our filtering domes orrect Answer orrect Answer Question 21 2 / 2 pts Star "B" is four times further away from the Sun than Star "A." The parallax angle of Star "B" is ...four times smaller than that of Star "A" sixteen times larger than that of Star "A" four times larger than that of Star "A" the same as that of Star "A" sixteen times smaller than that of Star "A" Correct! Correct! Question 22 2 / 2 pts If the Sun was 1.3 times its present mass. What planet/s would be in the habitable zone?Earth and Mars Earth, and almost Venus Correct! Correct! Mercury, Venus, and Earth 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 18/37 Saturn and Uranus Neptune Question 23 0 / 2 pts Which of the following will NEVER happen to the Sun?it will become a red giantit will become a neutron star it will have a core made of Helium it will have a planetary nebula it will become a white dwarf orrect Answer orrect Answer Question 24 0 / 2 pts 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 19/37 If the image doesn't load for you, click on this link. (https://drive.google.com/file/d/1rLFdL5l25TtUtwToy2MqyTCXoJOXoX16/view? usp=sharing) Which star has the largest radius? C A orrect Answer orrect Answer D B E Question 25 2 / 2 pts 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 20/37 The "onion skin" model has to do with different fusion zone layers in a very massive star as it is near the end of its life Correct! Correct! the proton-proton chain in the core of a low mass star on the main sequence the conversion of iron to gold in a Type II supernova explosion the different parts of a black hole formed at the end of the life of a very massive star the different layers of a neutron star which are formed when protons and electrons are smashed together Question 26 0 / 2 pts Which force has the W+ boson as one of its bosons?gravity electromagnetic dark energy strong 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 21/37 orrect Answer orrect Answer weak Question 27 0 / 2 pts If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1H-liQUxabE2uk9V--NTdaTf5u3xBL04R/view? usp=sharing)Which of the following correctly lists the temperatures FROM COLDEST TO HOTTEST in the diagram above?B < A < CC < B < A orrect Answer orrect Answer B < C < A A < B < C A < C < B 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 22/37 Question 28 2 / 2 pts What is in this image?If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1cLoDh54S4EJVrU0b4iIW0NwLnSafZuX/view?usp=sharing)Cass A supernova remnant the Pleiades open star cluster Cat's eye planetary nebula Correct! Correct! V838 Mon nova 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 23/37 47 Tuc globular cluster Question 29 0 / 2 pts Which statement is FALSE?planetary nebulae usually have black holes at their centersplanetary nebulae can have layers because of pulsating stars planetary nebulae usually last tens of thousands of years orrect Answer orrect Answer planetary nebulae are a few light years in size a planetary nebula will be part of the end state of the Sun Question 30 0 / 2 pts What type of galaxy is this? 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 24/37 If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1rckfCeQzQyAgvANO2Ew3tCBZirXJHZws/view? usp=sharing)IrrSBc Sc orrect Answer orrect Answer E1 E7 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 25/37 Question 31 0 / 2 pts Which of the following does physics professor Bernard Bates assert as essential in order for living organisms to develop advanced technology?ability to see colorsliving on land written language diet consisting of meat harnessing electricity orrect Answer orrect Answer Question 32 0 / 2 pts 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 26/37 If the image (a single image showing two plots) doesn't load for you, click on this link. (https://drive.google.com/file/d/1R4BgSlG9rb4MZwA07ulqE0WFc1NlGo_/view?usp=sharing) The first plot above shows an imaginary distribution of dark matter in a galaxy. Is the second plot of orbital velocity vs. radius correct for that distribution? No, for that distribution the orbital velocity should be constant with radius. No, for that distribution the orbital velocity should increase further out. No, the orbital velocity should be zero at every radius. orrect Answer orrect Answer Yes No, the orbital velocity should be zero except at radius 50. 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 27/37 Question 33 0 / 2 pts The supermassive black hole in the center of the Milky Way has a mass of100 solar masses4 million solar masses 10 solar masses 1000 solar masses 100 billion solar masses orrect Answer orrect Answer Question 34 0 / 2 pts Among these choices, what is the last thing that happens in the history of the Universe?the Big Bang expansion beginselectrons join with nuclei to make atoms nucleosynthesis the Planck epoch quarks join together to make protons and neutrons orrect Answer orrect Answer 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 28/37 Question 35 2 / 2 pts The main-sequence turnoff of a star cluster tells us the cluster'sage. mass. composition. Correct! Correct! distance. size. Question 36 0 / 2 pts A nova isa star that suddenly brightens and then goes to its normal brightness again, and then the process repeats.a region of a molecular cloud with a temperature low enough that the Jeans mass is low enough to allow star formation. a star that is invisible and then becomes visible for several minutes because the planetary debris surrounding it moves aside. orrect Answer orrect Answer a planet that is almost massive enough to become a star. 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 29/37 a star that explodes suddenly at the end of its life and then becomes a neutron star or black hole. Question 37 2 / 2 pts Why do stars in the halo of the galaxy have almost no heavy elements such as carbon, nitrogen, and oxygen?Halo stars formed before those elements were made. Making C, N, and O requires massive stars, and there are no massive stars in the halo. None of the other answers are correct Correct! Correct! Heavy elements are biological, and there is no life out there to make them. Those elements have been used up in halo stars. Question 38 0 / 2 pts What is in this image? 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 30/37 If the image doesn't load for you, click on this link.(https://drive.google.com/file/d/1PgN_T1qT1Bqgx0iRGZZM8qEvpFMPEvIt/view? usp=sharing)the Pleiades open star clusterEagle nebula star forming region orrect Answer orrect Answer Butterfly planetary nebula 47 Tuc globular star cluster V838 Mon nova 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 31/37 Question 39 0 / 2 pts What is the boson for the strong force?gluonphoton orrect Answer orrect Answer Z boson graviton W boson Question 40 2 / 2 pts Which of the following is FALSE?If the geometry of space is "flat" then parallel light rays will diverge. Correct! Correct! Dark energy is everywhere in space, but there is only a small amount per unit volume. Dark energy causes the accelerating expansion of the Universe. If the geometry of space is "closed" then parallel light rays converge. Observations of Type Ia supernovae in distant galaxies show that the expansion of the Universe is accelerating. 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 32/37 Question 41 0 / 2 pts Compared to spiral galaxies, elliptical galaxies haveless gas, redder colors, and less new star formation.less gas, bluer colors, and more new star formation. orrect Answer orrect Answer more gas, redder colors, and less new star formation. less gas, bluer colors, and more new star formation. more gas, bluer colors, and more new star formation. Question 42 0 / 2 pts In the earlier universespiral galaxies were not nearly as common as they are todayirregular galaxies were not as common as they are at present because galaxies had not yet had time to collide galaxies tended to be more circular, with more E0 galaxies compared to E7 galaxies than in the present. orrect Answer orrect Answer elliptical galaxies were much more common compared to irregular galaxies than they are at the present because there had not been enough time for irregular galaxies to form 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 33/37 almost all galaxies were spirals in the earlier universe and at present almost all galaxies are ellipticals. Question 43 0 / 2 pts True or False? The primary evidence for an accelerating universe comes from observations of young stars in the Milky Way.False, in order to measure accelerating expansion, we need to measure the distances of objects billions of light-years away.False, we have to look at young stars in other galaxies beyond the Milky Way to measure the acceleration of the universe. orrect Answer orrect Answer False, evidence for an accelerating universe comes from observations of the oldest stars in the Milky Way, white dwarfs. True, massive star supernovae allow us to measure the expansion rate of the universe. True, observations show that there were many more young, massive stars in the early universe. Question 44 0 / 2 pts 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 34/37 A Helium-4 atom has a total of 3 protons, 3 neutrons, and 3 electrons 8 protons, 8 neutrons, and 8 electrons orrect Answer orrect Answer 2 protons, 2 neutrons, and 2 electrons 4 protons, 4 neutrons and 4 electrons 8 protons, 6 neutrons, and 8 electrons Question 45 0 / 2 pts The four forces arephotons, quarks, electrons, and protonsgravity, electromagnetic, weak, and strong orrect Answer orrect Answer gravity, quarks, mesons, and leptons weak, weaker, strong, and stronger electromagnetic, photons, light, and heat Question 46 2 / 2 pts Which has the events in the right order, from early to late? 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 35/37 Correct! Correct! quark soup, protons form, nucleosynthesis, atoms form, star formation quark soup, atoms form, star formation, protons form, nucleosynthesis atoms form, star formation, protons form, quark soup, nucleosynthesis star formation, quark soup, protons form, atoms form, nucleosynthesis nucleosynthesis, star formation, protons form, atoms form, quark soup Question 47 2 / 2 pts Typically, how many times bigger is the distance to the nearest galaxy to the size of the galaxy itself?tens of times bigger hundreds of millions of times bigger Correct! Correct! billions of times bigger more than 100 trillion times bigger trillions of times bigger Question 48 0 / 2 pts In which component of the Milky Way Galaxy is the Sun located?the disk the bulge orrect Answer orrect Answer 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 36/37 the Large Magellanic cloud the supermassive black hole the halo Question 49 0 / 2 pts At a time around 3.5 billion years ago, the primordial atmosphere that had a large fraction of carbon dioxide transformed into one that had a larger fraction of free oxygen. What cause this to occur?Early photosynthesizing organismsCollision of fragments of asteroids with Earth orrect Answer orrect Answer Earthquakes becoming more common due to Solar activity Volcanic outgasing Onset of an ice age Question 50 2 / 2 pts What about the spectra of Type I supernovae? Think: what are these different types of explosions made of? They should be similar, but only type I supernovae have hydrogen lines They should be similar, but only type II supernovae have carbon lines 12/10/22, 6:59 PM Astro7N-Test2-F21: ASTRO 7N, Section 01: Artistic Universe (22181--UP---WBASTRO---7N--------01--) https://psu.instructure.com/courses/2128218/quizzes/4376086?module_item_id=34118212 37/37 They should be similar, but only type II supernovae have hydrogen lines Correct! Correct! They should be the same. They should be similar, but only type I supernovae have carbon lines [Show More]

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