2008+-+2*+Physics+P

=America's Next Top Science Rockers!!=

Topics we should learn about/Topics to discuss
1 - How to describe a wave* 2 - types of instruments* 3- Carpentry 4- Materials we need (pvc piping) 5- How sound gets amplified* 6- Different rhythms 7- How to change pitch* 8- How to tune our instruments* 9- How to build an instruments to produce different sounds/music 10- What instruments goes with what types of music 11- How we perceive sounds* 12- Determine the frequency* 13- How are sounds created* 14- Anatomy of the ear!!!!!! 15- How sound waves move/travel* 16- How can one instruments produce multiple sounds 17- Melodies and harmonies: How they work together 18- How do we dampen Sound waves* 19- What math is involved in making in instruments* 20- How do CD's and headphones work 21- Material choice influence on sound 22- Human hearing range (frequencies) 23- Amps: Electronic 24- Anatomy of a wave* 25- Different bands! 26- What type of scales are there* 27- Music theory 28- Bass/Treble amplification 29- Petal effects

Notes from class/What we have learned so far
4/1 A fourth of a wave is the distance between a node and anti-node Frequency of wave length are inversely proportional Speed and frequency are proportional Add half a wave for each harmonic Boundary conditions on a string are two nodes and the boundary conditions on a closed tube are a node and anti node. f= V/lambda

3/21 HW for break: figure out what type of instrument you would like to make (look at the blue instrument-type sheet for ideas and do some research on the internet for building ideas).

We handed out the blue instrument sheet, and looked at pictures of instruments, watched videos of bart hopkins, talked about resonance, overtones, and nodes.

3/19 Hw: read 25.2-25.6, do 6-11, 23, 24-30

Size matters (for pitch) -length and mass and thickness effect pitch (frequency) -higher tension makes higher pitch -more mass = lower note -larger volume of air = lower pitch -material changes pitch -homogenous material gives a cleaner pitch -vibration creates sound -has to be able to move air -bigger surface area= louder sound produced -faster vibrating thing gives you a higher pitch -liquid absorbs sounds -solids just vibrate faster when they are empty (less massive fluid)

3/18 frequency wavelength amplitude wavespeed

If you increase the tension on a spring, the wave travels faster. If you decrease the tension, it travels slower. The amplitude of a wave doesn't seem to change the speed of a wave.

3/17 Introduction Nature of Sound Sound vs Noise Name that tune HW: 5 things/topics/questions that we need to learn about to be successful in building an instrument. Write everything you know about right now about each topic.

Who is building what
This is a list of who is building what, so if you are building something similar, you can discuss ideas or problems with them

Wind Instruments
Pan pipes- Asha S.

Pan/Trumpet Pipes - Mike Sullivan

Percussive Instruments
Xylophone-Lindsay C. Xylophone-Karleigh Rose Xyl ophone-Kim Habib

Stringed Instruments
Wash-Tub Bass- Allison G. Weird guitar-banjo-thing - Laurel H. Guitar- I think acoustic - Marisa Campbell viola-like instrument - Marisa Lim