astro_04_practice_test1_fall_2017_.doc

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DeAnza College Astronomy 04 Practice Test 1 Fall 2017 Multiple Choice : Mark answer on separate Scantron Sheet 1. Scientific notation is used in science because a. its makes it easy to write big or small numbers. b. all astronomical distances are expressed in metric units. c. it makes conversions between units easy. d. all of the above e. none of the above. 2. A light-year is 3. The average distance from Earth to the Sun is 4. A galaxy contains 5. The Local Group is another name for a. the Solar System. b. our galaxy and about 2 dozen nearby galaxies. c. a local rock and roll band. d. a cluster of stars of which the Sun is a part. e. a cluster of stars just outside our galaxy. 1
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6. The Solar System contains 7. At what two locations do the celestial equator and ecliptic cross? 8. The celestial equator is
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  • Fall '11
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