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Types of Units (Quality Measured)

Types of Units (Quality Measured). Distance (length) Mass/Weight Volume Time. What quality is measured by…?. kg. o C. cm. cm 3. mL. ft 2. Dimensional Analysis (unit conversion). 1 ft. 12 in =. 1 ft. 12 in =. Conversion between feet and inches can be written either:.

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Types of Units (Quality Measured)

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  1. Types of Units (Quality Measured) • Distance (length) • Mass/Weight • Volume • Time

  2. What quality is measured by…? kg oC cm cm3 mL ft2

  3. Dimensional Analysis(unit conversion) 1 ft 12 in = 1 ft 12 in = Conversion between feet and inches can be written either: These are called “Unit Factors”

  4. Dimensional Analysis(unit conversion) • The Goal: • Convert one unit to another • How: • Use conversion factors • Use them so that

  5. Dimensional Analysis(unit conversion) • How many feet are in 51.5 inches?

  6. D.A. Practice I have a 100.0 fluid ounce CamelBak. How many gallons is my CamelBak?

  7. D.A. Practice If a person weighs 208 lbs, what is their mass in amu?

  8. D.A. Practice Sacramento is the 35th largest city in the US. If 8.3% of people are left-handed and there are 39,665 lefties in Sacramento, what is the population of Sacramento? (ignore sig. figs. here)

  9. The Metric System • Built on BASE UNITS and PREFIXES • Base Units:

  10. tera giga mega kilo BASE • deci • centi • milli • micro • nano • pico

  11. The Metric System 1 milligram 1 kilometer 1 microliter 1 gigabyte

  12. Metric Conversions Convert 1.66 seconds to ms

  13. Metric Conversions Convert 4.2533x10-2 mL to L

  14. Metric Conversions Convert 98.5 cm to meters

  15. Metric Conversions Convert 5.234x108 g to Mg

  16. Metric Conversions _______________________________________ _______________________________________ (   ) Convert 2.91x108 nm to km

  17. Metric Conversions When converting from one prefixed unit to another always go to the base unit first! (   ) Convert 0.1611 dL to mL

  18. Conversions Factors and Sig. Figs. A conversion factor will have infinite sig. figs. IFF: ___________________________________________ AND _________________________________________ (remember, the ________________ considered to be _______)

  19. pound = in2= pound = in2= mile = in = mile = in = mm = m = mm = m = m = ft= m = ft= g = mL = g = mL =

  20. Conversions Convert 781505 gallons to liters

  21. Conversions The density of mercury is 1 mL = 13.55 g. Convert 463.7710 g of mercury to mL of mercury.

  22. Conversions Convert 3.81 mm  ft

  23. Conversions It takes roughly 8.317 minutes for the light from the Sun to reach the Earth. If light travels at 2.9979x1010 cm per second, what is the distance in km from the Sun to the Earth?

  24. Converting between volumes and areas What is the volume of a 76.31 cm3 container in m3?

  25. Converting between volumes and areas My apartment is 697.5 ft2, how many square miles is it?

  26. Conversions Florence Griffith-Joyner holds the women’s 100.m world record, finishing in 10.49 seconds. What was her speed in miles per hour?

  27. Temperature Scales Fahrenheit Celsius Kelvin

  28. Thermometers measure __________________!! ______________________________________ Temperature and Heat Heat is a measure of ______________in a body of matter Energy typically measured in: ______________________________

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