Universal Constants: A New Foundation of Measurement    >   Measure - Pursue Accuracy

Lesson 1 Quiz

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  1. Ancient measures of length were based on arms, paces, and artifacts. Historians would say that these measures were not:
    1. Precise
    2. Accurate x
    3. Honest
    4. Reliable

  2. An astronomer’s value for the distance to a crater on the moon is the same as the values of    astronomers at six other observatories. We say that the value is:
    1. Accurate
    2. Precise x
    3. Significant
    4. Invariable

  3. A GPS guidance system measures distance using:
    1. Time x
    2. Space
    3. Mass
    4. Energy

  4. Despite following GPS directions, a driver finds herself totally lost. The most probable source of error would be:
    1. The clock that standardizes the satellite
    2. The user interface that creates the "voice"
    3. The maps uploaded to the system x
    4. Variations in the speed of signal

  5. The constant used to define distance throughout the universe is:
    1. Planck’s Constant (energy)
    2. Speed of light x
    3. Kelvin (temperature)
    4. Intensity of light (candela)

  6. Which of the following might be considered an artifact?
    1. An observation of an eclipse
    2. A prediction of climate change
    3. A meter rod in a museum x
    4. The average of 100 scientists’ measurements

  7. The primary use of an artifact is to:
    1. Remember
    2. Compare x
    3. Expand
    4. Replace

  8. Centuries ago, the most significant problem for ocean navigation was:
    1. Waves and currents
    2. Telling time accurately x
    3. Light pollution obscuring stars
    4. Models of the Earth

  9. The United States agency that promotes innovation through measurement is:
    1. USDA
    2. NSF
    3. NIST x
    4. GSA

  10. Early standards for distance measurement were often derived from:
    1. Body parts and movements x
    2. Trade commodities
    3. Astronomical observations
    4. Fables and myths

  11. A Vernier caliper would probably be marked in:
    1. Grams
    2. Milliliters
    3. Millimeters x
    4. Candela

  12. Which professional would be most likely to consult a metrologist?
    1. The business manager of an equity company
    2. A realtor developing a new theme park
    3. A process control manager producing pharmaceuticals x
    4. A physical therapist

  13. Which of the following is not a unit in the International System of measurements? (SI)
    1. Candela
    2. Kelvin
    3. Mile x
    4. Ampere

  14. An astronomer wants to determine the composition of a distant star.  Which units would be most helpful to describe that star?
    1.  Amperes and moles
    2. Kelvin and candela x
    3. Amperes and kilometers
    4. Kelvin and moles

  15. Which of these academic backgrounds is appropriate for a metrologist?
    1. Mathematics
    2. Physics
    3. Engineering
    4. All of these x

  16. Process control is an industrial practice used to make sure every product is exactly the same. The goal of that practice is:
    1. Profits
    2. Efficiency
    3. Precision x
    4. Speed

  17. The move from physical artifacts to constants as standards for measurement was coordinated by:
    1. Manufacturers
    2. American researchers
    3. International agencies x
    4. Universities

  18. A constant is a better standard than an artifact because it is:
    1. More understandable
    2. Unchangeable x
    3. Mathematical
    4. Older

  19. Le Grande K, the artifact for mass, was not a permanent solution for measurement because:
    1. It was not easy to move around
    2. It could change slightly x
    3. It could be misunderstood
    4. It was different in different countries

  20. A technician for an international oil company travels from station to station, making sure that the flow from each part of each refinery is parallel. His job is to insure:
    1. Accuracy
    2. Precision  x
    3. Efficiency
    4. Profitability