F_97 - ASTRONOMY 100 Dr. Werner Dppen 2 pm, 12 December...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 ASTRONOMY 100 Dr. Werner Däppen FINAL EXAM ______________ 2 pm, 12 December 1997 Exam Number Name (Please Print) 1. One of the principal lessons of this course has been that _______ . a) we are at the center of the Universe b) our Sun is a very special star c) the planet Earth, the Sun, and the Galaxy are incredibly typical d) our own galaxy is the universe e) there is no material Universe: all is in our minds 2. A further lesson of this course is that ______________ . a) physics and astronomy have nothing whatever to do with each other b) we need to know no physics to understand what goes on in the Universe c) physics is so important that most of the current astronomical activities are indeed astro physics d) only mathematics, not physics, is needed to unravel the mysteries of the Universe 3. Another lesson is that we learned about truly astronomical dimensions. As an example, the distance from our galaxy, which itself has the respectable diameter of 100,000 light years, to our neighbor galaxy (the Andromeda galaxy) is, approximately __________________. a) 20,000-30,000 light years b) 200,000-300,000 light years c) 2,000,000-3,000,000 light years d) 20,000,000-30,000,000 light years e) none of the above: the Andromeda galaxy lies within our galaxy 4. A further lesson is that in order to understand the existence of my metallic car keys one must conclude that _______________ . a) the Sun is at least a second-generation star (after the Big Bang) b) the Earth was bombarded by a large number of iron meteorites c) the solar wind has carried the metals from the Sun to the Earth d) only an extraterrestrial civilization could have brought the metals to Earth 5. The distance determination based on variable stars can be used to infer distances a) only within our own galaxy b) to neighboring galaxies c) to all galaxies d) none of the above: since the stars vary, the results are too much variable
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 6. Which of the following answers is the most complete? The Local Group ___________. a) contains about 30 member galaxies b) is a poor cluster c) is the galaxy cluster to which the Milky Way Galaxy belongs d) is all of the above 7. One way astronomers deduce that the Milky Way Galaxy has the form of a disk is because one sees ______________. a) stars arranged in a circular region around the north celestial pole b) the same number of stars in all directions in the sky c) far more stars along the band of the Milky Way than in other directions d) none of the above is true 8. The globular clusters in our galaxy are _____________. a) all in the vicinity of the Sun b) distributed only in the galactic disk c) distributed in the entire galaxy (=galactic disk plus halo) d) none of the above: our galaxy contains no globular clusters 9. Astronomers believe that lots of dark matter exists in the Universe, because ____________. a)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/26/2009 for the course ASTR 100Lxg taught by Professor Dappen during the Fall '07 term at USC.

Page1 / 10

F_97 - ASTRONOMY 100 Dr. Werner Dppen 2 pm, 12 December...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online