In the waves lab, you changed to see how it would affect wave speed.

The correct answer is "medium".

Explanation:

The expression for the relation between the speed of the wave and frequency is as follows;

Here, v is the speed of the wave, f is the frequency of the wave and is the wavelength of the wave.

There is an inverse relationship between the frequency and wavelength. If the frequency of the wave increases then the wavelength of the wave decreases while the speed of the wave remains constant.

The properties of the wave can be described by amplitude, wavelength and frequency but the speed of the wave depends on the medium through which it is moving. The medium may be denser or rarer according to it the speed of the wave will vary.

Therefore, in the waves lab, you changed medium to see how it would affect wave speed.

your parents i think this could be it

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.