Waves And Sound
Syllabus, Handouts, and PowerPoints for this unit: Calendar .:. Handouts .:. Lectures
Labs for this Unit: Waves Lab .:. Interference Lab .:. Standing Waves Lab .:. Speed of Sound
Video Solutions for the Worksheets: Waves .:. Standing Waves .:. Doppler
Review for the: Waves mini Test .:. The Spring Final
12A. Understand Basic wave principles.
Basic Wave Principles:
12B. Know what types of waves there are and what they are.
Types of Waves:
12C. Do calculations with frequency, period, wavelength, and speed.
Frequency, Speed and Wavelength:
12D. Understand how different reflections occur, and how waves reflect.
Reflections:
PIPELINEFUNK - A guy riffs with his own echo from the other end of a long section of pipe. The other end is either closed off, or open, either would cause the echo we hear.
You can actually calculate the length of the pipe from the time between beats as he riffs.
12E. Understand the principle of superposition and constructive and destructive interference.
Superposition and Interference:
12F. Understand what standing waves are.
Demonstrations of Standing Waves: (watch first)
Both Ends Fixed
Both Ends Fixed
Both ends Free
One End Fixed
What standing waves are, and why they happen:
12G. Do calculations with standing waves.
Part 1:
Calculations with standing waves:
Part 2:
Calculations of first three modes:
Standing Waves with both ends fixed
Standing Waves with both ends free:
Standing Waves with one end fixed:
12H. Understand what sound is, and what affects the human experience of sound.
Properties of Sound:
12I. Understand how beats (wahwahs) work.
Beats:
12J. Understand how the basis of musical harmony comes from standing waves and beats.
12K. Understand what the Doppler effect is.
Example of Doppler Effect - Car Horn:
Example of Doppler Effect - Train: (Start at 0:30)
Basic Doppler Effect:
12L. Do calculations with moving source and moving observer Doppler effect.
Doppler Moving Source