7.3 The Metric System: Capacity and Weight (Mass) What are your objectives for Section 7.3? How can you accomplish each objective? 1 Learn the Basic Units of Capacity • Understand what a liter represents, and memorize the relationships between metric units of capacity. • Complete the given example on your own. • Complete You Try 1. 2 Convert Between Metric Units of Capacity • Use the same methods from Section 7.2. • Complete the given example on your own. • Complete You Try 2. 3 Learn the Basic Units of Weight (Mass) • Understand what a gram represents, and memorize the relationships between metric units of weight. • Complete the given example on your own. • Complete You Try 3. 4 Convert Between Metric Units of Weight (Mass) • Use the same methods from Section 7.2. • Complete the given example on your own. • Complete You Try 4. 5 Distinguish Between the Different Metric Units • Develop a series of questions to help decide which metric unit to use to describe a measurement. • Complete the given example on your own. • Complete You Try 5. Read the explanations, follow the examples, take notes, and complete the You Trys. 1 Learn the Basic Units of Capacity In Section 7.1, we learned that the basic units of capacity in the U.S. customary system are cups, pints, quarts, and gallons. We use units of capacity to measure quantities of liquids. For example, at the grocery store, we might buy a quart of milk. At the gas station, we put gallons of gasoline in our cars. But what are the units of capacity in the metric system? The basic unit of capacity in the metric system is the liter, sometimes spelled litre. Liter can be abbreviated as either l or L. We will use capital L so that we do not confuse the abbreviation with the number 1. The liter is related to the metric length. www.mhhe.com/messersmith SECTION 7.3 The Metric System: Capacity and Weight (Mass) 455
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