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Science and Measurement

Science and Measurement. Chapter 1.3 The Foundations of Physical Science. Unit Conversion. Why convert? Suppose you have a jar full of pennies and you count out 1565 pennies. You have 1565 cents-- but wouldn’t you rather know the dollar amount?

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Science and Measurement

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  1. Science and Measurement Chapter 1.3 The Foundations of Physical Science

  2. Unit Conversion • Why convert? • Suppose you have a jar full of pennies and you count out 1565 pennies. You have 1565 cents-- but wouldn’t you rather know the dollar amount? • You just move the decimal over two places to the left. It is $15.65 but it represents the same amount of money

  3. Converting SI Units • SI conversion is just as easy as changing pennies into dollars • There is a saying that will help you remember an easy way to convert within the metric system • King Henry Drinks Up Delicious Chocolate Milk

  4. Let’s Practice • Convert 650 millimeters to meters • Convert 142 kilometers to meters • Convert 754,000 centimeters to kilometers

  5. SI Estimation Challenge • Which is realistic • Width of a postage stamp • 1m, 15cm, or 20mm • Thickness of a CD • 0.1m, 0.01m or 0.001m • Height of a bus • 152.4mm, 20m, or 250cm • Length of a worm • 25.4mm. 25.4cm, or 0.254m • Length of a football field • 91.44m, 200m, 1km

  6. Converting BetweenEnglish and SI Units • Here are some handy conversion factors • 2.54 cm = 1 inch • 1.609 km = 1 mile • 30.48 cm = 1 foot • 39.37 in = 1 meter

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