1. Lesson 2: Metric Mass E.Q.: How do we use the metric system to measure mass?

2. History of Mass The balance was the first mass measuring instrument invented.

3. Which is heavier? 1 pound or 100 grams 1 pound 1 kilogram or 1 pound 1 kilogram 1 ounce or 1000 milligrams 1 ounce

4. Which is heavier? 1 pound or 100 grams 1 pound = 453 grams 1 kilogram or 1 pound 1 kilogram = 2.2 pounds 1 ounce or 1000 milligrams 1 ounce = 28.3 grams

5. What exactly is mass? Mass refers to the amount of matter in an object.

6. Metric Base Unit The base unit of mass in the metric system is the ____ and is represented by _. gram g

7. Kilogram A kilogram is equal to the mass of the __________ _________ ________. InternationalPrototypeKilogram

8. Mass 1 kg = ____ g 1g = ____ mg Which is larger? a.1 kg or 1500 g b.1200 mg or 1 g c.12 mg or 12kg d.4 kg or 4500 g 1000

9. Instrument to Measure Mass You will use the _____ ____ ______ to find the mass of objects. Triple beam balance

10. How to use a Triple Beam Balance 1 st – Place the film canister on the pan. 2 nd – Slide the large slider to the right until the arm drops below the line and then move it back one notch. 3 rd – Repeat the process with the 10 gram weight. When the arm moves below the line, back it up one groove. 4 th – Slide the one gram weight on the front beam until the lines match up. 5 th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram.