# OCR A-Level Physics B Modules 1&2 - Practical Skills

Accuracy
A measure of how close a measurement is to the true value
1 of 17
Accurate
Close to the true value
2 of 17
Calibration
Determining the relation between output and true input value
3 of 17
Iterative model
A mathematical treatment where small changes to variables are made at regular time intervals, Δt
4 of 17
Percentage Uncertainty
The uncertanty given as a percentage of the measurement
5 of 17
Precise
Repeated measurements are close together
6 of 17
Precision
A measure of how close repeated measurements are to each other
7 of 17
Random Error
An error in the results of an experiment which varies each time for the same setup
8 of 17
Repeatable
An experiment can be repeated multiple times to achieve the same results
9 of 17
Reproducible
An experiment can be repeated by someone else using different equipment or results to achieve the same answer
10 of 17
Resolution
The smallest detectable change in input
11 of 17
Response time
The time interval between a change in input and the corresponding change in output
12 of 17
Sensitivity
The ratio of the output to the input
13 of 17
Systamatic Error
An error in the setup of an experiment which is the same for every repetition using the same setup
14 of 17
Valid
The results answer the origional question
15 of 17
Validity
A measure of how well the results answer the origional question
16 of 17
Zero error
The output for zero input
17 of 17

## Other cards in this set

### Card 2

Accurate

#### Back

Close to the true value

Calibration

Iterative model

### Card 5

#### Front

Percentage Uncertainty