5-1kathleen+morris

Kathleen Morris TPJ 5/1/06 Today in class we picked up a packet on the front desk called "Standing Waves, Harmonics, and Resonance Notes." The pages are numbered 20-23. Before we got started on the activity for the day, Mr. Manning collected the class's technical manuals, which was the assignment for week three of the design a ride project. Written on the assignment board was our official test day, which is Thursday May 7th. The study guide will be due the same day like usual, however for this unit you only need to complete five out of the seven sections. After all of the reminders were out of way, Mr. Manning proceeded to talk about the notes which had to do with standing waves and what they look like with one fixed end, as well as two fixed ends. He drew on the board what the waves would look like in some of the harmonics. We learned that for waves which have one fixed end, there are only odd numbered harmonics. For waves with no fixed ends, you need to count the number of nodes to figure out what harmonic the wave is in. To demonstrate this, Mr. Manning tied a slinky to a string which was attached to a lab table. The one end was fixed, and he was moving the other do demonstrate the different harmonics of the wave. For the remainder of class, Mr. Manning handed back our labs which were completed the day before, however since not many groups received a good grade on them, he let us correct them and hand them back in to earn points back. Once finished with the labs, the rest of class was ours to begin working on our homework.