This document provides information about the metric system of measurement including units of length, mass, and volume. It explains that the metric system is used in science for precise measurements and definitions. Key points include: - The metric system uses prefixes like kilo, centi, and milli to denote powers of ten in units like meters, grams, and liters. - Units of length are measured in meters (m) or centimeters (cm). Mass is measured in grams (g) or kilograms (kg). Volume is measured in liters (L) or milliliters (mL). - Examples show converting between metric units using the prefixes and moving the decimal point based on powers of ten in

2. How many eggs are in 6 dozen? Step 1: How many eggs are in 1 dozen? 12 Step 2: Multiple 12 times 6 dozen = 72

3. 6 dozen x 12 eggs = 72 eggs 1 dozen

4. Metric System

7. English vs. Metric Units 100 kilogram = 220 pounds 1 ounce of gold = 28,349.5 milligrams 1 pound = 453.6 grams

8. Mass kg g cg mg Mass refers to the amount of matter in an object. The base unit of mass in the metric system is the kilogram and is represented by kg . Metric Units 1 Kilogram (km) = 1000 Grams (g) 1 Gram (g) = 1000 Milligrams (mg)

9. Measuring Mass We will be using triple-beam balances to find the mass of various objects. The objects are placed on the scale and then you move the weights on the beams until you get the lines on the right-side of the scale to match up.

10. English vs. Metric Units a 12-oz can of soda would equal approximately 355 ml. It would take approximately 3 ¾ 1-liter bottles to equal a gallon. 1 quart = 0.946 liters

11. Volume kl cl ml Volume is the amount of space an object takes up. The base unit of volume in the metric system is the liter and is represented by L or “l” . Standard: 1 liter is equal to one cubic decimeter Metric Units 1 liter (L) = 1000 milliliters (mL) 1 milliliter (mL) = 1 cm 3 (or cc) = 1 gram*

12. 1,000 cm 3 = 1,000 ml = 1,000 g

13. Measuring Volume We will be using graduated cylinders to find the volume of liquids and other objects. Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water. What’s the volume of water in the cylinder? What causes the meniscus? A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides. 43 ml

14. Measuring Solid Volume We can measure the volume of regular object using the formula length x width x height . _____ X _____ X _____ = _____ We can measure the volume of irregular object using water displacement . Amount of H 2 O without object = ______ About of H 2 O with object = ______ Difference = Volume = ______ 720 cm 3 200 ml 265 ml 65 ml 10 8 9 10 cm 9 cm 8 cm

15. English vs. Metric Units 1.6 kilometers 1 mile 1 yard = 0.9444 meters 1 inch = 2.54 centimeters

16. Length km m cm mm Length refers to the distance from one point to another. The base unit of length in the metric system is the meter and is represented by m . Metric Units 1 Kilometer (km) = 1000 meters 1 Meter = 100 Centimeters (cm) 1 Meter = 1000 Millimeters (mm)

17. Measuring Length How many millimeters are in 1 centimeter? What is the length of the line in centimeters? _______cm What is the length of the line in millimeters? _______mm 1 centimeter = 10 millimeters 2.8 28

18. Multiply each of the following numbers by 10 15 x 10 = 235 x 10 = 12.4 x 10 = 43.2 x 10 = 853.56 x 10 = 150 2,350 124 8,535.6 432

21. KILO 1000 Units HECTO 100 Units DEKA 10 Units DECI 0.1 Unit CENTI 0.01 Unit MILLI 0.001 Unit Ladder Method 4 km = _________ m How many jumps does it take? 4. = 4000 m 3 Meters Liters Grams How do you use the “ladder” method? 1 st – Determine your starting point. 2 nd – Count the “jumps” to your ending point. 3 rd – Move the decimal the same number of jumps in the same direction. 1 2 3 Starting Point Ending Point 1 __ . 2 __ . 3 __ .