2.1 Carry out a practical physics investigation that leads to a non-linear mathematical relationship ( 91168 v2)
NZQA: Achieved: Carry out a practical physics investigation involves:
- collecting data relevant to the aim based on the manipulation of the independent variable over a reasonable range and number of values
- drawing a graph that shows the relationship between the independent and dependent variables
- writing a conclusion which describes the type of mathematical relationship that exists between the variables
- controlling the variable(s) that could have a significant effect on the results
- using technique(s) that increase the accuracy of the measured values of the dependent (and independent, if appropriate) variable
- writing a conclusion that describes the mathematical relationship obtained from the experimental data.
- a reason why there is a limit to either end of the value chosen for the independent variable
- a justification for why a variable needs to be controlled
- a description of any difficulties encountered when making measurements and how these difficulties were overcome
- the relationship between the findings and physics ideas
- a description of any unexpected results and a suggestion of how they could have been caused and/or the effect they had on the validity of the conclusion.