Measurements and uncertainties

Question 1

State the fundamental units in the SI system

Answer 1

1

Question 2

Distinguish between fundamental and derived units and give examples of derived units

Answer 2

2

Question 3

Convert between different units of quantities

Answer 3

3

Question 4

State units in the accepted SI format

Answer 4

4

Question 5

State values in scientific notation and in multiples of units with appropriate prefixes

Answer 5

5

Question 6

Describe and give examples of random and systematic errors

Answer 6

6

Question 7

Distinguish between precision and accuracy

Answer 7

7

Question 8

Explain how the effects of random errors may be reduced

Answer 8

8

Question 9

Calculate quantities and results of calculations to the appropriate number of significant figures

Answer 9

9

Question 10

State uncertainties as absolute, fractional and percentage uncertainties

Answer 10

10

Question 11

Determine the uncertainties in results

Answer 11

11

Question 12

Identify uncertainties as error bars in graphs

Answer 12

12

Question 13

State random uncertainties as an uncertainty range (+-) and represent it graphically as an “error bar”

Answer 13

13

Question 14

Determine the uncertainties in the gradient and intercepts of a straight-line graph

Answer 14

14