2. Describe how, if at all, the water surface moves over time at Point A. 3. Describe how, if at all, the water surface moves over time at Point B. 4. Are there any other locations (in other words, not A or B) at which the water surface would not be moving up and down? Why or why not? Explain your thinkingPrelab 4: Two-Source Interference and Beats Name 1. Circular water waves can be generated in a ripple tank by tapping the surface of the water at a single point in a repeated pattern. The diagram on the right is a screen shot of a computer simulation of this scenario. The sim shows a top view, looking down on the ripple tank. The light and dark bands are crests and troughs of the circular water waves. In this case, drops of water falling from the faucet were creating the waves. Now imagine a situation in which circular waves are being generated by two small objects that tap the surface of the water. These sources move up and down regularly and in unison. The distance between the two sources is two-and-one-half times greater than the wavelength of the water waves generated by the sources. (In other words, source separation = 2.52.) Points A and B are marked on the diagram below. 300X- Point A 4004 2.57 Enlarged view of sources Point B Sources Top view 1.For each point, state whether there is maximum constructive interference, complete destructive interference. or neither at that point. Explain your reasoning. Point A . Point B 2. Describe how, if at all, the water surface moves over time at Point A. 3. Describe how, if at all, the water surface moves over time at Point B. 4. Are there any other locations (in other words, not A or B) at which the water surface would not be moving up and down? Why or why not? Explain your thinking