Uncertainties

Question 1

Absolute uncertainty

Answer 1

An uncertainty given with the appropriate unit.

E.g. 6.5V ±0.1V (6.5 ± 0.1) V

Question 2

Scale reading uncertainty

Answer 2

Uncertainty in a measurement due to the scale used.
= ± 1 of smallest division for digital scales.
= ± 1/2 of smallest division for analogue scales.

Question 3

Prefixes: kilo (k)

Answer 3

1 x 10^3

Question 4

Prefixes - giga (G)

Answer 4

1 x 10^9

Question 5

Prefixes milli (m)

Answer 5

1x10^-3

Question 6

micro (μ)

Answer 6

1 x 10-6

Question 7

Systematic uncertainty

Answer 7

When readings taken are all too large or too small. This can be caused by measurement techniques or experiment design

Question 8

Percentage Uncertainty

Answer 8

An uncertainty given as a percentage.

E,g. 6.5V ±1.5%

Question 9

Uncertainty in a final answer

Answer 9

The largest percentage uncertainty out of all the percentage uncertainties

Question 10

mega (M)

Answer 10

1 x 10^6

Question 11

Prefixes

nano(n)

Answer 11

1 x 10-9

Question 12

Prefixes

pico (p)

Answer 12

1 x 10 -12

Question 13

Random uncertainty

Answer 13

The uncertainty that occurs due to variations in repeated measurements.

                                     Max value - min value Random uncertainty = \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
                                        Number of values

Question 14

tera (T)

Answer 14

1 x 10^12