Triple science Exam tech

Command Word: State or Name

Just give the fact with no explanation and no working out required

Command Word: Describe (for a graph)

State the overall trend then quote two specific data points with units

Command Word: Describe (for a process or practical)

Write a chronological sequence of steps but DO NOT write why you are doing them

Command Word: Explain

State the point AND write the scientific reason why using because or which means that

Command Word: Evaluate (6 marks)

1. State advantages 2. State disadvantages 3. Write a final concluding sentence weighing them up

Command Word: Compare

You must explicitly mention BOTH things in your answer

Hinter: A question asks how to make results more Reliable

1. Repeat the experiment 2. Calculate a mean ignoring anomalies

Hinter: A question asks how to make an experiment more Accurate

Use measuring equipment with a higher resolution

Hinter: A question asks about the Validity of an investigation

Keep all other control variables the same so only the independent variable affects the dependent variable

Hinter: The question gives you an equation but asks for a final unit that is not standard

Convert everything to standard SI units FIRST and convert back at the very end

If I am asked to design or describe a Required Practical what is my 5-point mental checklist?

1. Independent variable 2. Dependent variable plus equipment 3. Control variables 4. Repeats and mean 5. Safety hazard and precaution