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Unit 1 |
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Technical Measurement |
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Fundamental properties |
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mass (weight) kilogram |
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length meter |
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time second |
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temperature Kelvin |
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*electric charge (coulombs) and light intensity
(candela) will not be discussed in this class |
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Derived quantities |
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density, velocity, force, etc... |
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Unit Conversions |
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Metric Metric |
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multiples of 10 |
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move decimal |
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*area - move twice |
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*volume - move three times |
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English Metric |
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conversion
factors |
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proportion method |
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unit cancellation method |
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3.25 ft. = ? m |
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19mm = ?
in. |
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24 oz. = ? Liters |
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5.33 lbs(mass) = ?g |
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24 oz. = ? liters |
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5.33 yds. = ? cm |
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1.5 ft3 = ? cm3 |
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0.75 m2 = ? in2 |
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Problem Solving
(5 steps) |
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1. Identify the question (problem) |
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2. List the important data |
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3. Write the formula or facts which relate the
question with the known data |
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4. Substitute data into the formula |
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5. Calculate |
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Does the answer make sense ? |
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Does it answer the question ? |
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Significant digits |
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The digits reported in a measured quantity |
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Indicate the precision of the measuring
instrument |
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Calculations should not have more significant
digits than the measurement with the least number of significant digits |
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*In this class we will use rounding to help make
calculations understandable and useful. In some instances this will yield
slightly different results. |
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Notes