11/28/2012

Finish the worksheet on sound waves from PHET (it's on my desk).  Hand in.

Work on playing a tune with your finished instrument.


Watch this video:


And this


And finally this




Tomorrow, you will need to bring as many of the materials as possible as shown in the last video.  

Writeup of your Instrument.

Detail HOW you know that your instrument has 4 different pitches.
Is your instrument a string, percussion, or wind instrument?

How could we figure out the exact pitch (notes) you are playing?  Could we gather data on this?

How did thickness or diameter affect your instrument?

What type of music are you creating?  Rhythm, blues, chime, Christmas, or pop are all possibilities.

Draw a sketch of your instrument and list dimensions and materials used.

Train whistles

http://www.rattlebrained.org/articles/diy-pvc-train-whistle

http://jpdery.com/TrainWhistle.html

http://www.thewoodcrafter.net/proj/twhistle.php

http://www.carrotmuseum.co.uk/musical.html  

https://docs.google.com/open?id=0BxyfL3_e92ZndTY4S3Z6Smk5S1E

http://www.markshep.com/flute/index.html

http://philtulga.com/HomemadeMusic.html


http://11wall-west.com/~ph_kosel/flutomat.html

http://www.chicaandjo.com/2010/08/09/make-copper-wind-chimes/ (nice plan, but the holes need some help)

http://www.youtube.com/watch?v=TCzUBKKykow



===========Making them better=============

To make a wind chime or other thing better, TUNE them to specific notes:

http://home.fuse.net/engineering/Chimes.htm

Visualizing open and closed pipes

Watch the video and look at the animations found at

http://www.phys.unsw.edu.au/jw/flutes.v.clarinets.html


1.  Be able to tell me what a harmonic is  and what a sound wave looks like.


Take a look at the link at

http://www.physicsclassroom.com/class/sound/U11L5a.cfm


READ the first three paragraphs and the last three paragraphs.


We will be discussing about instruments at 12:45

ITSI-SU Waves

Today, we will be going back to itsi-su, a site we have visited before.   You must use an individual computer today.

http://itsisu.portal.concord.org/home


Please make certain you complete the pretests


Waves
Light and Matter

and the Waves and Interference activity.

Testing Your Mousetrap Car

 

Take a picture of you and your mousetrap car.

• the MA of the wheel/axle, 
• the MA of the mousetrap setup, 
• how far your car went (less than 5, less than 10, greater than 10), 
• what you learned, and 
• what you would change if you did it again.  

This should be between 3 and 5 paragraphs, and should show the dimensions you measured....

Mousetrap Car testing moved to Monday

Hey everyone.  I am missing the Friday fiesta due to back issues  :(, and that means you ALL SHOULD BE READY with your vehicle on Monday at the beginning of class.   If you are not ready to go by then, you will be doing your testing after school.

Click to Run

This activity deals with the concept of the skater dude and his own potential and kinetic energy.   You need to get a partner (Christine may pair you up) and complete this activity as a pair.  If you are letting your partner do all the work, you will receive a zero.  :(

Activity 1

Activity 2

HAND IN YOUR COMPLETED WORK AT THE END OF CLASS, PLEASE.   

Understanding Mechanical Advantage

What machines will a mouse trap car have?  Well, you need a body, wheels, and a mousetrap.

The mousetrap is a lever.  What type?  Does this make things faster or easier?







Here, we have two machines (3rd class lever and a wheel and axle) with an AMA less than 1.  What does this do for the racer?   How can we maximize this factor for the wheels?

Compound Machines

Go through http://edheads.org/activities/odd_machine/frame_loader.htm and keep track of the number of questions you get correct.


Watch this video

Hang Time Video

  Please Watch


Another video voiceover: http://www.youtube.com/watch?v=dg5AuYCsg98&feature=related