Lecture 27

Lecture 27 - Final Exam Wednesday May 12 4:00 5:30 pm...

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Final Exam Wednesday May 12 4:00 – 5:30 pm Physics Lecture Hall Closed book and notes Computer-graded multiple-choice questions Material covered: Text chapters 23 - 28 Lectures 15-27 (March 9 through April 29) Bring Student ID card and a #2 pencil Practice Exam now on class web page
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Extra Credit Submit multiple-choice questions for final exam (with 5 answer choices). Email submission preferred Deadline: 5 pm Friday, April 30 Accepted questions replace low quiz and class participation scores– up to 1 quiz and 2 class scores replaced
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Previous Lecture Chemistry of life: carbon and water Astrobiology Miller-Urey experiment, interstellar molecules Extrasolar planets Drake equation N ic L ic Communications with aliens Interstellar travel
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Which of these statements about open and globular star clusters in the Milky Way is false ? A. A typical open cluster is as old as a typical globular cluster. B. A typical open cluster is found in the disk whereas a typical globular cluster is found in the halo. C. A color of a typical open cluster is bluer than a color of a typical globular cluster. D. The shape of a typical open cluster is more irregular than the shape of a typical globular cluster. E. A typical open cluster contains fewer stars than a typical globular cluster.
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Suppose that an O star just formed in our Galaxy. What will subsequently form in the vicinity of this star? A. HI region (atomic hydrogen. ..). B. HII region (ionized hydrogen. ..). C. Dust lane. D. Molecular cloud. E. Density wave.
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What evidence indicates that spiral galaxy mergers may produce elliptical galaxies? A. Spirals are more numerous in the outer parts of galaxy clusters, while ellipticals are more common in the inner regions. B. We have observed several spiral galaxies collide and produce ellipticals. C. The internal motions of ellipticals are similar to those of spirals. D. Elliptical and spiral galaxies are made of the same types of stars and interstellar material. E. Small “mom and pop” spiral galaxies are not economically viable, and will inevitably be taken over by ellipticals, the Walmarts of the galaxies.
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If one stellar system has a larger M/L ratio than another, then it: A. has more stars than the other system. B. has more luminosity than the other system. C. is further away than the other system. D. has a stronger magnetic field than the other system. E. has lower mass stars, on average, than the other system.
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What is the source of energy for the hot (1 million K) interstellar medium in the Milky Way? A. ultraviolet radiation from O and B main sequence stars B. beams of radiation from pulsars C. gravitational energy from the collapse of neutron stars and black holes D. supernova explosions E. the energizer bunny
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distance to the Fornax galaxy, a small dwarf spheroidal (i.e. a very small elliptical) galaxy in the Local Group that is sufficiently close to us so that its individual stars can be resolved? A.
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This note was uploaded on 01/31/2012 for the course 750 110 taught by Professor Ericgawaiser during the Fall '10 term at Rutgers.

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Lecture 27 - Final Exam Wednesday May 12 4:00 5:30 pm...

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