ASTR Chapter 3.pdf

5/5/24, 11 : 13 PM Chapter 3 HW: Attempt review | Moodle-in-Canvas Page 1 of 9 https://lti.learn.illinois.edu/mod/quiz/review.php ? attempt=11312011&cmid=1849556 Started on Monday, 25 March 2024, 10 : 35 PM State Finished Completed on Monday, 25 March 2024, 10 : 49 PM Time taken 14 mins 3 secs Marks 12.00/12.00 Grade 15.00 out of 15.00 ( 100 %) Question 1 Correct Mark 1.00 out of 1.00 Question 2 Correct Mark 1.00 out of 1.00 Select one: Stars are formed a. Throughout the Milky Way Galaxy b. In giant molecular clouds ! Yes, where gravity coalesced enough material to collapse into a new star. c. In isolated regions away from other stars d. In large, diffuse clouds e. In the Big Bang Your answer is correct. The correct answer is: In giant molecular clouds Select one: Which stage is NOT part of the Sun’s life ? a. Supernova explosion ! Correct, the Sun will NEVER be a supernova. That is only for much more massive stars. b. Main sequence star c. Planetary nebula d. White dwarf e. Red Giant Your+answer+is+correct. The correct answer is: Supernova explosion

5/5/24, 11 : 13 PM Chapter 3 HW: Attempt review | Moodle-in-Canvas Page 2 of 9 https://lti.learn.illinois.edu/mod/quiz/review.php ? attempt=11312011&cmid=1849556 Question 3 Correct Mark 1.00 out of 1.00 Question 4 Correct Mark 1.00 out of 1.00 Select one: What keeps the Sun from collapsing ? a. Magnetic field b. Temperature c. Solid Core d. Turbulence e. Pressure ! Yes, pressure from heat, which in turn is caused by fusion. Your+answer+is+correct. The correct answer is: Pressure Select one: Which one of the following is inarguably necessary for stars to form out of gas clouds ? a. Magnetic field b. Turbulence c. Gravity ! Yes, you have to have gravity. d. Heavy elements. e. All of the above. Your+answer+is+correct. The correct answer is: Gravity

5/5/24, 11 : 13 PM Chapter 3 HW: Attempt review | Moodle-in-Canvas Page 3 of 9 https://lti.learn.illinois.edu/mod/quiz/review.php ? attempt=11312011&cmid=1849556 Question 5 Correct Mark 1.00 out of 1.00 Question 6 Correct Mark 1.00 out of 1.00 Select one or more: Which objects may be produced by a supernova explosion ? (Hint: Could be more than one.) a. White dwarfs b. Supergiants c. Brown dwarfs d. Neutron stars ! Yes, neutron stars are one possibility, but there is another. e. Black holes ! Yes, black holes are one possibility, but there is another. Your+answer+is+correct. The correct answers are: Black holes, Neutron stars Select one: What does the phrase "We are star stuff" mean ? a. That we are evolved from life forms left on earth by ancient aliens b. That the elements that make up our body, other than hydrogen, were produced in the cores of stars ! We are star stuff. c. That we go to the University of Illinois d. That we are dependent on the energy from the Sun for our existence e. That we are all special Your answer is correct. The correct answer is: That the elements that make up our body, other than hydrogen, were produced in the cores of stars

5/5/24, 11 : 13 PM Chapter 3 HW: Attempt review | Moodle-in-Canvas Page 4 of 9 https://lti.learn.illinois.edu/mod/quiz/review.php ? attempt=11312011&cmid=1849556 Question 7 Correct Mark 1.00 out of 1.00 Question 8 Correct Mark 1.00 out of 1.00 Select one: Which of the following stars is the hottest ? a. The Sun b. A red star c. A blue star ! Yes, blue stars are the hottest. d. A yellow star e. An orange star Your+answer+is+correct. The correct answer is: A blue star Select one: What is the last element to form by fusing in the core of a massive star before it goes supernovae ? a. Al b. Au c. Fe ! Yes, after iron one needs to take energy to create heavier elements not making energy. d. He e. H Your answer is correct. The correct answer is: Fe

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