PDF Notes: OCR Physics Year 1 Textbook-compressed

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    What are the key skills assessed in a written examination for physics?

    Planning, implementation, data analysis, and evaluation.

    How do systematic errors differ from random errors?

    Systematic errors are consistent and predictable, while random errors vary unpredictably.

    What is the significance of significant figures in measurements?

    They indicate the precision of a measurement.

    What is the purpose of a fiducial mark in experiments?

    It serves as a reference point for measurements.

    What does the conservation of energy imply?

    Energy cannot be created or destroyed, only transformed.

    What is the difference between scalar and vector quantities?

    Scalars have magnitude only, while vectors have both magnitude and direction.

    What happens if an experiment lacks proper control of variables?

    Results may be invalid or unreliable.

    What is the role of a hypothesis in experimental design?

    It provides a testable prediction based on scientific knowledge.

    What is the effect of temperature on resistivity?

    Resistivity typically increases with temperature for conductors.

    What are the implications of using a stopwatch for timing in experiments?

    Accuracy can be affected by human reaction time.

    What is the relationship between force and acceleration according to Newton's second law?

    Force equals mass times acceleration (F=ma).

    How does the Young modulus relate to material properties?

    It measures a material's stiffness or elasticity.

    What is the importance of evaluating experimental methods?

    To ensure they are appropriate for achieving expected outcomes.

    What is the difference between absolute and percentage uncertainties?

    Absolute uncertainty is a fixed value, while percentage uncertainty is relative to the measurement.

    What does the term 'terminal velocity' refer to?

    The constant speed reached by an object falling through a fluid.

    What is the significance of plotting graphs in experiments?

    Graphs help visualize relationships between variables.