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Graphing data Transitional Reasoning Practice

Physics · Introduction to Physics · Physics · Scientific Investigation

2 Physics practice questions on Graphing data. Questions that build towards applied reasoning.

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Questions

  1. 1.

    A student investigates how the temperature of a water sample changes as thermal energy is supplied at a constant rate. Using a stopwatch and a thermometer, the student sets specific time intervals of 30 seconds for 5 minutes and records the resulting temperature at each mark. When constructing a standard scientific scatter plot to evaluate this process, which graphing convention should the student follow?

    • A) Plot temperature on the horizontal axis and elapsed time on the vertical axis, spacing each reading at equal intervals regardless of numerical value.
    • B) Plot elapsed time on the horizontal axis as the independent variable and temperature on the vertical axis as the dependent variable, applying uniform numerical scales to both axes.
    • C) Plot temperature on the horizontal axis as the controlled quantity and connect each consecutive data point with jagged line segments to preserve all experimental errors.
    • D) Plot elapsed time on the vertical axis and scale both axes so that only the recorded data values appear as tick marks along the grid lines.
  2. 2.

    In an investigation to determine the speed of a battery-powered toy car moving in a straight line, a student records the car's distance from the starting line at various elapsed times. Due to minor reaction-time delays during timing, the plotted data points show small random variations around a straight trend. To reliably determine the car's speed from this graph, which procedure should the student follow?

    • A) Plot distance on the horizontal axis, elapsed time on the vertical axis, and connect consecutive points with straight line segments.
    • B) Plot elapsed time on the horizontal axis, distance on the vertical axis, and force a straight line exclusively through the first and last points.
    • C) Plot elapsed time on the horizontal axis, distance on the vertical axis, and construct a line of best fit that evenly balances the points.
    • D) Plot distance on the horizontal axis, elapsed time on the vertical axis, and draw a curved line that intercepts every single plotted point.

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