Chapter 2 Resource: Measurement - Learning Services Home

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Name Date Class Laboratory Activity 1 (continued) Hands-On Activities Questions and Conclusions 1. What did the rubber band represent 2. What two objects were attracting each other 3. What happened to the mass of the plastic bottle and its contents as you added marbles 4. What happened to the length of the rubber band as you added more mass to the plastic bottle 5. What happened to the force of attraction between Earth and the plastic bottle and its contents 6. How are weight and mass related 7. If the force of attraction (gravity) on the Moon is 1/6 that of the force on Earth, what would you weigh on the Moon if you weighed 42 kilograms, or about 412 N (newtons) on Earth 8. If your mass on Earth were 42 kilograms, what would your mass be on the Moon Strategy Check Can you measure the force of gravity on marbles Can you state the relationship between mass and weight Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. 10 <strong>Measurement</strong>
Name Date Class Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. 2 Laboratory Activity Measuring Using SI Units International System (Systeme Internationale, or SI) units of measuring are used in science throughout the world. These units are easier to use than our Standard English system of inches, feet, miles, ounces, and pounds. The International System of measures is a decimal system. SI units are based on 10 and multiples of 10. Measuring devices based on SI units include metric rulers, metersticks, liter beakers, and balances graduated in grams and milligrams. Strategy You will create a set of masses. You will use the water displacement method to determine the volumes of the masses. Materials balance materials for masses clay (standard set) beaker (50 mL) creative mass set water Procedure 1. Using the balance, measure exactly 10 g of clay. Mold the clay into any shape. 2. Determine the volume of the clay and record in Table 1. Sketch the shape of the mass and set the mass aside. Record all data in the table. Data and Observations Table 1 3. Using one of the materials provided by the teacher, make a set of masses. You should have five 1 g masses, two 2 g masses, one 5 g mass, one 10 g mass, and one 20 g mass. Record the materials you choose. 4. When you have created your set of masses, use the balance to see if the 20g mass exactly balances the combined masses of the 10 g mass, two 2 g masses, one 5 g mass, and one 1 g mass. Record your results on the table. 5. Determine the volume of each mass of your set. Record in the table. Material Used Mass (g) Volume (mL) Masses balance Shape of Mass 10 1 5 10 20 yes no Hands-On Activities <strong>Measurement</strong> 11
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