Final answer:
The dependent variable is the timing of cricket chirps. The student investigates the impact of different temperatures, the independent variable, on chirp timing using a sound-activated microphone in a 12-day experiment.
Step-by-step explanation:
In the described experiment, the dependent variable is the timing of the cricket chirps. The dependent variable is the outcome or response that is measured to determine the effect of the independent variable, which, in this case, is the weather temperature. The student is investigating whether there is a relationship between the temperature and the timing of the cricket chirps. By using a sound-activated microphone to record the chirps, the student is collecting data on the dependent variable (chirp timing) to analyze how it changes in response to different temperatures, which is the independent variable.