1-9. Pascal’s  law  pertains  to  the 1. construction  of  aqueducts 2. use of water wheels for doing work 3. differences  of  floating  and submerged  bodies 4. transmission  of  force  in confined  fluids IN  QUESTIONS  1-10  THROUGH  1-12,  SELECT FROM COLUMN B THE TYPE OF POWER USED IN EACH  ITEM  OF  EQUIPMENT  OR  SYSTEM  LISTED IN COLUMN A. _  EQUIPMENT A B. POWER TYPES 1-10. Dental  Chair 1. Hydraulic 1-11. Anchor  Windlass  2. Hydro- pneumatic 1-12. Service  station lift 3. Pneumatic 1-13. 1-14. 1-15. Learning  Objective: Identify the states  of  matter  and  the  factors affecting them. All  matter  is  classified according to its state as a solid,   a liquid, or a gas. 1.    True 2. False The  critical  factors  affecting the state of matter are 1. 2. 3. 4. temperature  and  weight pressure  and  density density  and  specific  gravity pressure  and  temperature Learning  Objective: Recognize the  pressure  characteristics  of liquids,  including  how  pressure is caused by the weight of the atmosphere,  and  identify  how pressures  are  measured. Pressure can be measured in terms of force per unit area. 1. True 2.    False 1-16. Mark each of the following statements,   concerning  the  atmosphere and  atmospheric  pressure,  true  or  false; then select the alternative below that lists 1-17. 1-18. 1-19. the statements that are true. A.   The troposphere is that part of the atmosphere touching  the  earth’s  surface B.    The atmosphere has weight. c.    Atmospheric pressure decreases  as  altitude decreases. D.    Atmospheric pressure at    points below sea level is less than at sea level. 1. A and B 2. B and C 3. C and D 4. A, B, C, and D The  reference  standard  used  as  an indicator  of  atmospheric  pressure is a column of mercury that at sea level is 1. 76 inches high at 0°C 2. 76 centimeters high at 4°C 3. 76 centimeters high at 0°C 4. 29.92 inches high at 4°C The side of a thin-walled chamber partially evacuated of air is the source of movement for the 1. hydrometer 2. aneroid  barometer 3. mercury  thermometer 4. Fahrenheit   thermometer Learning  Objective: Identify terms and facts applicable to the physics of fluids and use these facts with related formulas to solve  problems  pertaining  to density and specific gravity. In the metric system the density of a substance is its weight in 1. grams per cubic foot 2. pounds per cubic foot 3. grams  per  cubic  centimeter 4. pounds  per  cubic  centimeter 2