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SQA Higher Physics Researching Physics and uncertainties overview quiz quiz

14questions. Pick an answer and you'll see why right away.

  1. How is a measured result correctly quoted in Higher Physics?

  2. What is the scale-reading uncertainty of a digital meter?

  3. Which type of uncertainty shows up as scatter in repeated readings?

  4. Which type of uncertainty is NOT reduced by taking more readings?

  5. How is the approximate random uncertainty in a mean calculated?

  6. Five readings are 4.1, 4.3, 4.0, 4.4, 4.2. What is the mean?

  7. How is a percentage uncertainty calculated?

  8. A length of 0.250 m has an absolute uncertainty of 0.005 m. What is the percentage uncertainty?

  9. How are percentage uncertainties combined for a result found by multiplying or dividing quantities?

  10. Two quantities have percentage uncertainties of 6 percent and 8 percent. What is the combined percentage uncertainty?

  11. When several quantities have different percentage uncertainties, which one dominates the combined result?

  12. How many significant figures is an absolute uncertainty normally quoted to?

  13. How does choosing apparatus help keep uncertainties small in the assignment?

  14. A theoretical value lies within the experimental uncertainty of a measured value. What can be concluded?