Question

an example of a scientific measurement when determining the period of a pendulum is

○ the number of seconds to perform ten oscillations

○ a list of the items required for the experiment

○ a second as measured by a stopwatch

Explanation:

To determine the period of a pendulum, a scientific measurement involves quantifying time for oscillations. The first option measures the time (in seconds) for ten oscillations, which is a direct measurement used to calculate the period (by dividing by 10). The second option is a list of materials, not a measurement. The third option describes a unit of time, not a measurement for the pendulum's period.

Answer:

A. the number of seconds to perform ten oscillations