Final answer:
The three waves that can change direction in an indoor swimming pool are refraction, total internal reflection, and interference.
Step-by-step explanation:
There are three waves that you could observe changing direction in an indoor swimming pool:
- Refraction: Water waves traveling from the deep end to the shallow end of a swimming pool experience refraction. They bend in a path closer to perpendicular to the surface of the water, propagate slower, and decrease in wavelength as they enter shallower water.
- Total Internal Reflection: When a swimmer is underwater and their image is reflected back into the water, total internal reflection occurs. The undisturbed water surface acts as a reflecting surface when viewed from below, allowing us to see a reflected image of the swimmer.
- Interference: In a ripple tank, where water waves are produced by two vibrations in phase, interference can be observed. This creates an interference pattern where waves overlap, forming regions of constructive and destructive interference.
These three phenomena demonstrate how waves can change direction in an indoor swimming pool.