![]() ![]() As long as you are planning on only measuring objects on Earth, you can use mass/weight fairly interchangeablybut it is worth noting that there is a difference!įinally, the basic metric unit of volume is the liter. However, the objects mass would remain the same in both places because mass measures the amount of substance in an object. For this reason, an objects weight would be different if it was weighed on Earth or on the moon because of the difference in the gravitational forces. ![]() Weight is a measure of the pull of gravity on an object. You may notice that the word mass is used here instead of weight. In the sciences and technical fields, a distinction is made between weight and mass. A regular-sized paperclip has a mass of about 1 gram.Īmong scientists, one gram is defined as the mass of water that would fill a 1-centimeter cube. The basic metric unit of mass is the gram. A meter is slightly larger than a yardstick, or just over three feet. In the metric system, the basic unit of length is the meter. Note that the names of all metric units follow from these three basic units. ![]() ![]() The table below shows the basic units of the metric system. customary system, where 3 feet equals 1 yard, and 16 ounces equals 1 pound. For now, notice how this idea of getting bigger or smaller by 10 is very different than the relationship between units in the U.S. This means that a meter is 100 times larger than a centimeter, and a kilogram is 1,000 times heavier than a gram. The metric system also applies the idea that units within the system get larger or smaller by a power of 10. Notice that the word meter is part of all of these units. In addition to the difference in the basic units, the metric system is based on 10s, and different measures for length include kilometer, meter, decimeter, centimeter, and millimeter. customary system uses feet, quarts, and ounces to measure these. The metric system uses units such as meter, liter, and gram to measure length, liquid volume, and mass, just as the U.S. Convert from one temperature scale to the other, using conversion formulas.State the freezing and boiling points of water on the Celsius and Fahrenheit temperature scales.Solve application problems using metric units.Define the metric prefixes and use them to perform basic conversions among metric units.customary units and metric units of length, weight/mass, and volume Describe the general relationship between the U.S.Another common healthcare prefix is micro = one millionth or 0.000001 of the base unit One way to remember the order of metric units for conversions is to use a mnemonic device such as: King Harry Died from a Disease Called Malaria Kilo hector deca (base) deci centi milli Common healthcare metric units with abbreviations and equivalents Unit Abbreviation Equivalents Weight gram (base unit) g 1 g = 1000 mg = 1,000,000 mcg milligram mg 0.001 g = 1 mg = 1,000 mcg microgram mcg 0.000001 g = 0.001 mg = 1mcg kilogram kg 1 kg = 1000 g Volume liter (base unit) L 1 L = 1000 mL deciliter dL 0.1 L = 1 dL milliliter mL 0.001 L = 1 mL Length meter (base unit) m 1 m = 100 cm = 1000 mm centimeter cm 0.01 m = 1 cm = 10 mm millimeter mm 0.001 m = 0. Handout 1 Metric measurement chart Prefix Kilo- Hecto- Deca- Base Unit Deci- Centi- Milli Weight kilogram gram milligram Volume kiloliter liter deciliter milliliter Length kilometer meter centimeter millimeter Value to Base 1000 100 10 1 0.1 0.01 0.001 The most common prefixes and values used in healthcare are highlighted in yellow. ![]()
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