A student plans to investigate the effect of temperature on the viscosity of motor oil by measuring the rate of fall (terminal velocity) of a steel ball bearing through a column of the oil.
The apparatus consists of a tall glass measuring cylinder filled with motor oil, placed inside a larger water bath. Two horizontal marker bands are wrapped around the cylinder at a fixed distance apart. The student is provided with identical steel ball bearings, a thermometer, a stopwatch, a ruler, and a magnet.
Describe how the student could use this apparatus to investigate the effect of temperature on the rate of fall of the ball bearing.
In your answer you should include: