How does changing the amplitude affect the wavelength

Increasing one decreases the other.

Explanation:

You only have so much space, so you can either have weak but frequent waves, or strong but infrequent ones.

If the frequency increases, then the wavelength will be shorter, because there are more waves closer together. How does changing the amplitude affect wavelength? Amplitude does not affect wavelength ... A wave with more energy has a higher up crest / higher amplitude.