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Learn history, units, and instruments to measure mass in the metric system. Discover the balance as the first measuring tool. Explore mass units like kilogram and gram. Practice using a Triple Beam Balance.
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Lesson 2: Metric Mass E.Q.: How do we use the metric system to measure mass?
History of Mass • The balance was the first mass measuring instrument invented.
Which is heavier? • 1 pound or 100 grams 1 pound • 1 kilogram or 1 pound 1 kilogram • 1 ounce or 1000 milligrams 1 ounce
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
What exactly is mass? • Mass refers to the amount of matter in an object.
Metric Base Unit • The base unit of mass in the metric system is the ____ and is represented by _. gram g
Kilogram • A kilogram is equal to the mass of the __________ _________ ________. International Prototype Kilogram
Mass 1 kg = ____ g 1g = ____ mg Which is larger? • 1 kg or 1500 g • 1200 mg or 1 g • 12 mg or 12kg • 4 kg or 4500 g 1000 1000
Instrument to Measure Mass Triple beam balance • You will use the _____ ____ ______ to find the mass of objects.
How to use a Triple Beam Balance • 1st – Place the film canister on the pan. • 2nd – Slide the large slider to the right until the arm drops below the line and then move it back one notch. • 3rd – Repeat the process with the 10 gram weight. When the arm moves below the line, back it up one groove. • 4th – Slide the one gram weight on the front beam until the lines match up. • 5th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram.