The last question in Paper 2 is usually question number 8, which carries 12 marks. This question will be based on an experiment where you have to write down:
- Readings [Make sure the unit of measurement you use is correct]
- Variables
a) Constant variable [This is the fixed variable]
b) Manipulated variable [This is the factor that is changed in the experiment to get the specific result. ie: Length of wire (cm)]
c) Responding variable [This comes from the readings or the results of the experiment. ie: Ammeter reading]
- Aim of experiment
- Example: To study/investigate the relationship between the manipulated and the responding variable.
- Hypothesis
- This shows the relationship between the manipulated and the responding variable.
- Writing format: "When the manipulated variable increases/decreases, the responding variable will increase/decrease."
- Observation
- What can be observed or what you can see.
- Plot a line or bar chart
- Prediction
- This will be based on your graph, where you have to predict a reading for the responding variable when given a value for the manipulated variable.
- Example of a question: From the graph, find out the value of T when the mass is 10g.
- Inference
- This is the early conclusion based on your observations.
- Example: The change in the responding variable depends on the manipulated variable.
- Conclusion This is the same as the hypothesis.
Note: It is very important to get your manipulated variable and the responding variable correct!
