Rt a
in the phet simulation, select oscillate, select no end, and scale damping to none (leave tension at the highest setting since it is a physical property that does not apply to a wave of light, thus we can ignore it as long as it is at the highest setting). classify each change (can be manipulated within the green box) according to its effect on the wavelength.
drag the appropriate items to their respective bins.

reset
decrease frequency
decrease damping
decrease amplitude
increase frequency
increase amplitude
increase damping
shortens wavelength lengthens wavelength does not affect wavelength