Question

directions: sort the following as a characteristic of wavelength, frequency or amplitude.
increases as the number of oscillations per second increases
wavelength frequency amplitude

Explanation:

Step1: Recall wave properties

Wavelength is the distance between two consecutive peaks/ troughs. Amplitude is the maximum displacement from the rest position. Frequency is the number of oscillations per second ($f=\frac{\text{number of oscillations}}{\text{time}}$).

Step2: Match the description

The statement says "increases as the number of oscillations per second increases". The number of oscillations per second is frequency, so as that number increases, frequency increases. Wavelength and amplitude don't depend on oscillations per second in this way (wavelength is distance, amplitude is displacement).

Answer:

Frequency (the button labeled "Frequency")