In the simulation below, select, "Water."
Click on "Graph" in the upper-right.
Set the Frequency to the lowest setting.
Set the Amplitude to the lowest setting.
Examine the image below; notice along the x-axis each line is equivalent to 1 cm and that each line along the y-axis is also equivalent to 1 cm.

In this section, you will be using water waves to examine the following wave properties - wavelength, frequency, and amplitude.
After that, you will set the amplitude to the middle setting (between 0 and max); then you will increase the frequency setting (increase it each small line every 10 seconds) while you are examining how the number of waves changes.
In this section, assume the x-axis (position in cm) is actually time in seconds.