Chapter 2 Resource: Measurement - Learning Services Home

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Name Date Class Hands-On Activities Floor plan drawing (continued) Conclude and Apply 1. How did you calculate the lengths to be used on your drawing Did you put a scale on your drawing 2. Infer what your scale drawing would look like if you chose a different scale. 3. Sketch your room at home, estimating the distances. Compare this sketch to your scale drawing of the classroom. When would you use each type of illustration 4. What measuring tool simplifies this task Communicating Your Data Measure your room at home and compare it to the estimates on your sketch. Explain to someone at home what you did and how well you estimated the measurements. For more help, refer to the Science Skill Handbook. Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. 6 <strong>Measurement</strong>
Name Date Class Design Your Own Pace Yourself Lab Preview Directions: Answer these questions before you begin the Lab. 1. Explain why scientists do experiments. Hands-On Activities 2. Explain why accurate measurement tools are very important in an experiment. Track meets and other competitions require participants to walk, run, or wheel a distance that has been precisely measured. Officials make sure all participants begin at the same time, and each person’s time is stopped at the finish line. If you are practicing for a marathon or 10K, you need to know your speed or pace in order to compare it with those of other participants. How can your performance be measured accurately Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. Real-World Question How will you measure the speed of each person in your group. How will you display these data Form a Hypothesis Think about the information you have learned about precision, measurement, and graphing. In your group, make a hypothesis about a technique that will provide you with the most precise measurement of each person’s pace. Goals ■ Design an experiment that allows you to measure speed for each member of your group accurately. ■ Display data in a table and a graph. Possible Materials meterstick stopwatch *watch with a second hand *Alternate materials Safety Precautions Work in an area where it is safe to run. Participate only if you are physically able to exercise safely. As you design your plan, make a list of all the specific safety and health precautions you will take as you perform the investigation. Get your teacher’s approval of the list before you begin. Test Your Hypothesis Make a Plan 1. As a group, decide what materials you will need. 2. How far will you travel How will you measure that distance How precise can you be 3. How will you measure time How precise can you be 4. List the steps and materials you will use to test your hypothesis. Be specific. Will you try any part of your test more than once <strong>Measurement</strong> 7
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