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This chapter delves into the Metric System, comparing it with the Imperial system and highlighting its importance in industry. It explores length, mass, volume, area, time, current, power, and temperature, providing problems and real-world applications for each topic. Conversion between metric and US units is emphasized, with practical examples. Including tables and diagrams, this guide serves as a crucial resource for students and professionals alike to grasp metric measurements and their conversions in everyday contexts.
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Chapter 3 The Metric System
§3.1 – Introduction • Systems • Imperial system • Metric system (SI) • Use in industry • Table 3.1 (p. 125) • Table 3.3 (p. 126) • Problems 3.1 #2, 10, 14, 20, 32, 36
§3.2 thru 3.3 – Length and Mass • Length (meter and other units) • Problem 3.2 #40, 44, 54, 56, 62 • Mass (gram and other units) • Problem 3.3 #36, 44
§3.4 – Volume and Area • Volume • Liquid measurements • Spatial measurements • Figures 3.10 and 3.11 (p. 133) • Liquid units – Liter (and other) • Do problems 3.4 #8, 40 • Spatial units – m3 (and other) • Do problems 3.4 #10, 45 • Volumes / mass relationships • 1 g = 1 cm3 = 1 mL • Ex: How many mL in 0.5 m3? What is the mass of 0.5 m3?
§3.5 – Time, Current, & Power • Time – seconds (other units) • Problem 3.5 #26 • Current (Amp and other) • Power (Watt and other) • Problems 3.5 #16, 32
§3.6 – Temperature • Temperature scales • Celsius, Kelvin, Fahrenheit • Water boils (100⁰C, 373K, 212⁰F) • Water freezes (0⁰C, 273K, 32⁰F) • Conversion formulas • Convert 42.3⁰F to Celsius • A child has a temperature of 37⁰C. Is the child running a fever?
§3.7 – Metric and US Conversions • Need for conversion in industry • Conversion section of reference card in book • Problem 3.7 #2, 18 • A common engine size in late 1970s model Pontiac Firebirds used to be 305 in3. By the late 1980 models a common size was 5.0L. Is there a significant difference in these engine sizes? • Graded Activity #4
