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Metric Measurement

Metric Measurement. Types of Metric Measurement. Length Mass Volume Temperature Density Time. Length. Distance between 2 points Basic Unit: meter (m) Equipment: meter sticks, metric rulers. Mass. Amount of matter in an object Basic Unit: gram (g) Equipment: Triple Beam Balance

philip-hebert
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Metric Measurement

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  1. Metric Measurement

  2. Types of Metric Measurement • Length • Mass • Volume • Temperature • Density • Time

  3. Length • Distance between 2 points • Basic Unit: meter (m) • Equipment: meter sticks, metric rulers

  4. Mass • Amount of matter in an object • Basic Unit: gram (g) • Equipment: Triple Beam Balance ** Weight is different than mass! Weight is mass x force of gravity. Mass is constant. Weight can change.

  5. Amount of space something takes up. Volume

  6. Volume of liquids Basic Unit: liter (l) Equipment: graduate cylinder *Always read a graduate cylinder at eye level. Meniscus- curved upper surface of a column of liquid.

  7. Volume of Liquids-cont. • Read the volume using all certain digits and one uncertain digit. • Certain digits determined from marks on cylinder • Uncertain digit is estimated. Volume: 6.62 ml

  8. Volume: 11.5 ml Volume: 52.7 ml

  9. Volume of Solids • Basic Unit: cm3 • Equation: • V = L x W x H • Example: V= 3cm x 3cm x 3cm 3 cm 3 cm 3 cm

  10. Volume of Irregular Solids • You will use a graduate cylinder by water displacement.

  11. Temperature • The measure of how hot or cold something is. • Basic Unit: Kelvin (K) • Equipment: Thermometer • Most scientists use Celsius (C°)

  12. Density • Closeness of particles(how spread apart they are) • Mass per unit volume of an object • Basic Unit: grams per cm cubed (g/cm3) • Equation: D = M / V

  13. Time • Interval between 2 events. • Basic Unit: Seconds (sec) • Equipment: Clock or stopwatch

  14. Metric Conversions Going Up: Move the decimal point left for every step you take. Kilo 1000 Hecto 100 K Deka 10 H Base Unit 1 Dk Deci 0.1 g , l, m Centi 0.01 d Going down: Move the decimal point right for every step you take. Milli 0.001 c m

  15. Metric Conversions Going Up: Move the decimal point left for every step you take. Kilo Hecto K Deka H Base Unit Dk Deci g ,l, m Centi d Going down: Move the decimal point right for every step you take. Milli c m

  16. Converting Metric Units Practice Problem 1: 1000 mg=______g Practice Problem 2: 160 cm=_______ mm Practice Problem 3: 109 g=________kg

  17. Converting Metric Units Compare using >, <, or =. Problem 4: 56 cm  6 m Problem 5: 7 g  698 mg

  18. Metric Conversion: Answers Problem 1:1 g Problem 2: 1,600 mm Problem 3: .109 kg Problem 4: < Problem 5: >

  19. Conversion Practice Problems • 27 Dkm = ______________ cm • 2, 437 cm = ______________ km • 14 kg = __________________cg

  20. Fri. Practice Problems • 65 dg = ______________Dkg • 100,000 mm = _______________ km • Find the volume of this object. (Each small block is 1 cm long)

  21. Practice Problems Answers • 0.65 Dg 2) 0.1 km 3. 27 cm3

  22. A shorter way to write very large & small numbers. Example: 300,000,000 m/s (speed of light) = 3.0 * 108 Coefficient Exponent Scientific Notation To write a number in scientific notation: 1. Put the decimal after the first digit and drop the zeroes 2. Count the number of places from the decimal to the end of the number.

  23. Example 1: 123,000,000,000 Coefficient = 1.23 In 123,000,000,000 there are 11 places. Exponent = 11 Answer : 1.23 * 1011 Example 2: 0.000001 s Coefficient= 1.0 In 0.000001 there are 6 places. Exponent: 6 Answer: 1.0 * 10-6 s

  24. Scientific Notation Practice Problem 1: 1,000 000 km = 1.0 * 106 km Practice Problem 2: 5, 600, 000, 000, 000, 000, 000, 000 m/s = 5.6 *1021 m/s Practice Problem 3: .311 000 000 000 000 L = 3.11 * 1014 L

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