Making waves

Hello all. Since I left our unit sound waves hanging I've scoured the web and found a site that will help you make the next step on your own. After break I will be back for one class and one class only (well maybe more) just to let you listen to my lap top make more beeping sounds and possibly to play with slinkies. In the mean time I want you to go to this site http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/waves/u10l3c.html (it's a tutorial on wave interference...which is what happens when you have multiple waves interacting with each other -- check out the links for previous lectures if you find yourself in need of a review). Read through the lecture and aswer the questions. Be sure to try answering them yourself before you click the to see the answer and be sure you really understand the answer that is given once you do check. I would like each of you to email me a short paragraph explaining constructive and destructive interference. If you want you can draw a picture and email me a photo of it (in addition to a written photograph). For extra credit draw a four frame animation of a square wave coming from the right and triangular wave coming from the left. Your frames should cover the time before the two waves intersect, the duration of their intersection and the time after. I will post what I think the first frame should look like soon. All of this is due the monday after spring break. You should look at the site and attempt the questions, however, by the end of this week. I expect to recieve an email from all of you by friday reporting your progress.