Ryan+Donovan+4-20

Mr. Manning checked the homework at the beginning of class. He then handed back out week 1 roller coaster assignment. After handing in the homework check, we went over the homework and he explained the problems and how we were supposed to get the answer. We went from the homework to the daily question: When playing a violin, the effect produced when the bow is drawn faster across the string is.. a) a higher pitch b) greater wave velocity in the string c) a louder sound d) all of these e) none of these. The answer is C. After the daily question we did an activity, which involved the daily question. We learned why C was the correct answer. The activity was called Reflection. A reflection is the process by which a wave or pulse moving in one direction is cause to turn back and move in the opposite direction. Then Mr. Manning did a demonstration in the back of the room with the wave maker. Here is a picture of what it looked like.