Practice Final Exam

Practice Final Exam - MULTIPLE CHOICE QUESTIONS(100 pts...

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MULTIPLE CHOICE QUESTIONS (100 pts.) Choose the best answer to each of the following questions using what you have learned in ASTR 101. Indicate choice on your scantron. (2 pts. each) 1. Which other body in our Solar System has confirmed current volcanic activity besides Earth? A. Mars B. Mercury C. Saturn D. Io E. Charon, Pluto’s satellite 2. A meteor shower (like the Orionids) that occurs at a particular time of the year in a given constellation is related to which astronomical phenomenon? A. Earth’s passage through the asteroid belt. B. Earth’s passage through that constellation. C. Earth’s passage through the solar wind. D. Earth’s passage through the disk of our galaxy. E. Earth’s passage through the orbital path of a comet. 3. When a hydrogen burning shell develops around a helium core inside the Sun in the future, our star will A. become a red giant. B. become a blue supergiant. C. rapidly collapse to become a white dwarf. D. get ready to explode. E. dim and not provide enough energy for Earth. 4. Why does the HR Diagram of a globular star cluster NOT contain any stars with high luminosity and high temperature on the main sequence? A. This type of star cluster is born with only low mass stars. B. The high mass stars long ago evolved into giant stars. C. The stars that were in this position on the main sequence have undergone the usual splitting into binaries. D. Stars that will occupy this position on the main sequence have not yet evolved from the protostar phase. E. Main sequence stars cannot be high temperature stars. 5. When the core of a supergiant is composed of _________, the star is destined to become a supernova. A. hydrogen B. helium C. carbon D. silicon E. iron
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6. Many clusters of galaxies contain a few gigantic elliptical galaxies among the thousands of smaller ones. A current theory proposes that these gigantic galaxies are the result of A. mergers of smaller galaxies. B. gas and dust from the Big Bang coming to rest in these galaxies. C. the evolutionary expansion of galaxies in a cluster. D. the expansion of the universe. E. magnification by gravitational lenses. 7. Which of the following has the most rapid apparent motion in the sky? (You would actually notice it move while you watched.) A. a comet B. Mercury C. the Moon D. a meteor E. an asteroid 8. The iron in the hemoglobin of your red blood cells has 26 protons and 30 neutrons in each nucleus. These nuclei formed A. during the Big Bang. B. shortly after the formation of the Solar System. C. inside the core of the Sun. D. inside the core of a star similar to the Sun but older. E. inside the core of a massive star that eventually became a supernova. 9. On the Winter Solstice (which occurs on Dec. 21 at 7:22 PM EST this year), A. day and night are of equal length. B. the astronomical year officially begins.
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Practice Final Exam - MULTIPLE CHOICE QUESTIONS(100 pts...

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