An Introduction to Physical Science 15th Edition James Shipman, Jerry D. Wilson, Cha
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rles A. Higgins, Bo Lou
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Chapter 1-24 ma
Chapter 1 ma
MEASUREMENT
Chapter 1 is important because all quantitative knowledge about our physical environment
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is based on measurement. Some chapter sections have been reorganized and rewritten for clari
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ty. The 1.2 Section, ―Scientific Investigation,‖ introduces the student to the procedures for scien
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tific investigation. Major terms such as experiment, law, hypothesis, theory and scientific meth
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od are introduced. The idea that physical science deals with quantitative knowledge should be
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stressed. It is not enough to know that a car is going ―fast‖; it is necessary to know how fast.
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A good understanding of units is of the utmost importance, particularly with the metri
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c-
British use in the United States today. The metric SI is introduced and explained. Both the me
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tric and the British systems are used in the book in the early chapters for familiarity. The instr
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uctor may decide to do examples primarily in the metric system, but the student should get so
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me practice in converting between the systems. This provides knowledge of the comparative s
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ize of similar units in the different systems and makes the student feel comfortable using what
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may be unfamiliar metric units. The Highlight, ―Is Unit Conversion Important? It Sure Is,‖ illu
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strates the importance of unit conversion.
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The general theme of the chapter and the textbook is the students’ position in his or h
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er physical world. Show the students that they know about their environment and themselves t
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hrough measurements. Measurements are involved in the answers to such questions as, How ol
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d are you? How much do you weigh? How tall are you? What is the normal body temperature
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?
How much money do you have? These and many other technical questions are resolved or ans
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wered by measurements and quantitative analyses.
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DEMONSTRATIONS
Have a meter stick, a yardstick, a timer, one or more kilogram masses, a one-
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liter beaker or a liter soda container, a one-
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quart container, and a balance or scales available on the instructor’s desk. Demonstrate the co
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mparative units. The meter stick can be compared to the yardstick to show the difference betw
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een them, along with the subunits of inches and centimeters. The liter and quart also can be co
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mpared. Pass the kilogram mass around the classroom so that students can get some
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,idea of the amount of mass in one kilogram. Mass and weight may be compared on the balanc
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e and scales.
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When discussing Section 1.6, ―Derived Units and Conversion Factors,‖ have class me
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mbers guess the length of the instructor’s desk in metric and British units. Then have several s
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tudents independently measure the length with the meter stick and yardstick. Compare the me
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asurements in terms of significant figures and units. Compare the averages of the measuremen
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ts and estimates. Convert the average metric measurement to British units, and vice versa, to pr
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actice conversion factors and to see how the measurements compare.
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Various metric unit demonstrations are available from commercial sources.
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ANSWERS TO MATCHING QUESTIONS ma ma ma
a. 15
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n. 1 ma o. 9 ma
p. 4
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ma ma ma ma m a m a u. 16 v. 22 w. 7
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ANSWERS TO MULTIPLE-CHOICE QUESTIONS ma ma ma
1.c 2. b 3. c 4. b 5. b 6. c 7. d 8. b
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ANSWERS TO FILL-IN-THE-BLANK QUESTIONS ma ma ma
1. biological 2. hypothesis
ma ma 3. scientific method 4. sight, hearing 5. limitations
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7. longer 8. fundamental 9. time or second 10. one-billion, 109 11. liter
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12. mass
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ANSWERS TO SHORT-ANSWER QUESTIONS ma ma ma
1. An organized body of knowledge about the natural universe by which knowledge is acquir
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ed and tested.
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2. Physics, chemistry, astronomy, meteorology, and geology.
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3. The 5 elements of scientific method are:
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1. Observations and Measurements, ma ma
2. Hypothesis,
3. Experiments,
4. Theory, and ma
5. Law.
4. Hypothesis
, 5. A law is a concise statement about a fundamental relationship of nature. A theory is a w
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ell- tested explanation of a broad segment of natural phenomena.
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6. It illustrates the need to improve the standard of education among the general public and
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to emphasize the importance of a well-developed scientific method.
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7. Sight, hearing, touch, taste, and smell.
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8. They have limitations and can be deceived, thus providing false information about o
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ur environment.
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9. (a) No. (b) Yes. (c) Lower line.
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10. A fixed and reproducible value.
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11. They are the most basic quantities of which we can think. And they are not dependent
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on other physical quantities.
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12. A group of standard units and their combinations.
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13. mile/hour
14. No, the United States is the only major country that has not gone completely metric.
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15. Kilogram, a platinum-iridium cylinder. ma ma ma
16. Mass. Weight varies with gravity.
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17. Meter-kilogram-second, International System of Units, and centimeter-gram-second. ma ma ma ma ma ma
18. Base 10 easier to use (factors of 10).
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19. kilo- (k), mega- (M), milli- (m), micro- (µ)
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20. Mass of a cubic liter of water.
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21. kg/cubic meter. ma
22. Three fundamental quantities generally used are: Length(m), Mass(Kg), an
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d Time(s).
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23. The compactness of matter.
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24. It is given a new name.
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25. No. An equation must be equal in magnitude and units.
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26. Yes. And it could be confused with ―meters‖ instead of ―miles.‖
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27. To express measured numbers properly.
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28. The 3 rules for determining significant figures are:
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1. Non-zero digits are always significant, ma ma ma ma