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Unit 6: Practical Skills in Physics II

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  1. 6.3 - Planning

    1. 6.3.1Apparatus details

      Identify the most appropriate apparatus and give relevant details, including instrument range and resolution or apparatus dimensions.

    2. 6.3.2Instrument calibration

      Discuss calibration of instruments, including whether an instrument reads zero before measurements are made.

    3. 6.3.3Measuring variables

      Describe how to measure relevant variables using the most appropriate instruments and techniques.

    4. 6.3.4Controlling variables

      Identify and state how to control all other relevant variables to make an experiment a fair test.

    5. 6.3.5Repeat readings

      Discuss whether repeat readings are appropriate.

    6. 6.3.6Health and safety

      Identify health and safety issues and explain how they may be managed.

    7. 6.3.7Use of collected data

      Explain how the collected data will be used.

  2. 6.4 - Implementation and Measurements

    1. Explain how an experiment could have been improved, including using additional apparatus to reduce errors.

    2. Evaluate the number of readings taken.

    3. Evaluate the range of measurements taken.

    4. Evaluate significant figures and identify or correct inappropriate figures in a results table.

    5. Identify and correct units that are incorrect.

    6. Identify and check a reading inconsistent with other readings, such as a point away from the graph trend.

  3. 6.5 - Analysis

    1. Perform calculations using the correct number of significant figures.

    2. Plot results on a graph using an appropriate scale and units, including logarithmic graphs.

    3. Use correct units throughout data analysis.

    4. Interpret the trend or pattern obtained.

    5. Determine a relationship between two variables or a constant from a graph, including finding a gradient with a large triangle.

    6. Use the terms precision, accuracy and sensitivity appropriately.

    7. Suggest realistic modifications to reduce errors.

    8. Suggest realistic modifications to improve an experiment.

    9. Evaluate uncertainties qualitatively and quantitatively.

    10. Combine percentage uncertainties correctly.

    11. Determine percentage uncertainty for a single reading using half the instrument resolution and for repeated readings using half the range.