Chapter 3 Scientific Measurement 3.3 Solving Conversion Problems

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Presentation transcript:

Chapter 3 Scientific Measurement 3.3 Solving Conversion Problems 3.1 Using and Expressing Measurements 3.2 Units of Measurement 3.3 Solving Conversion Problems Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Calculate how many seconds are in one year (assuming 365 days Do Now: Calculate how many seconds are in one year (assuming 365 days in one year). Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

1 dollar = 4 quarters = 10 dimes = Conversion Factors A quantity can be expressed in different ways. 1 dollar = 4 quarters = 10 dimes = 20 nickels = 100 pennies Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Conversion factor: ratio of equivalent measurements. Conversion Factors Conversion factor: ratio of equivalent measurements. 1 dollar = 4 quarters conversion factors 1 dollar 4 quarters Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

1 meter = 100 centimeters Conversion Factors 100 cm or 1 m Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Dimensional Analysis Dimensional analysis is a way to analyze and solve problems using the units, or dimensions, of the measurements. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Using Dimensional Analysis Sample Problem 3.9 Using Dimensional Analysis How many seconds are in a workday that lasts exactly eight hours? Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Using Dimensional Analysis Sample Problem 3.9 Using Dimensional Analysis How many seconds are in a workday that lasts exactly eight hours? Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Converting Between Metric Units Express 750 dg in grams. Sample Problem 3.11 Converting Between Metric Units Express 750 dg in grams. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Converting Between Metric Units Express 750 dg in grams. Sample Problem 3.11 Converting Between Metric Units Express 750 dg in grams. Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Converting Between Metric Units Sample Problem 3.13 Converting Between Metric Units The diameter of a sewing needle is 0.073 cm. What is the diameter in micrometers? Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

Converting Between Metric Units Sample Problem 3.13 Converting Between Metric Units The diameter of a sewing needle is 0.073 cm. What is the diameter in micrometers? Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.

END OF 3.3 Copyright © Pearson Education, Inc., or its affiliates. All Rights Reserved.