Waves. LAB (PLUS). 1. 3 in A2 Open VA.exe. 2. 4 Click ON in upper left and whistle … 5 Volunteers? One note change pitch Watch BOTH graphs … 2 whistlers … BOTH Graphs. 1. 2. 2. 1.  Open A3 folder and open NetLogo4.1.3 exe  File Open and get to A1_Sound Workbench
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3 in A2
4 Click ON in upper left and whistle …
5 Volunteers? One note change pitch Watch BOTH graphs … 2 whistlers … BOTH Graphs
 Open A3 folder and open NetLogo4.1.3 exe
 File Open and get to A1_Sound Workbench
 Click on Recorder button. Click again to stop. Click and then go to VA screen.
 Notice? … Use other buttons …
 NOTE: 3 Similarities and 3 differences between one button and another
PRESENTATIONS OF WHAT WE FOUND another
[i] Topics to be Able to Address:
• Properties of Waves with Higher and Lower Pitch
• Properties of Waves that are Louder and Softer
[ii] Using BOTH Graphs compare two or more sounds in terms of SIMILARITIES and DIFFERENCES
Some notes … another
(7) Science concepts. The student knows the characteristics and behavior of waves. The student is expected to:
(A) examine and describe oscillatory motion and wave propagation in various types of media;
(B) investigate and analyze characteristics of waves, including velocity, frequency, amplitude, and wavelength, and calculate using the relationship between wavespeed, frequency, and wavelength;
(C) compare characteristics and behaviors of transverse waves, including electromagnetic waves and the electromagnetic spectrum, and characteristics and behaviors of longitudinal waves, including sound waves;
(D) investigate behaviors of waves, including reflection, refraction, diffraction, interference, resonance, and the Doppler effect;
(E) describe and predict image formation as a consequence of reflection from a plane mirror and refraction through a thin convex lens; and
(F) describe the role of wave characteristics and behaviors in medical and industrial applications.
Types of waves and behavior of waves. The student is expected to:
A wave is a disturbance that transfers energy from one place to another without requiring any net flow of mass. For now, we'll focus on mechanical waves, requiring a medium in which to travel. Light, and other electromagnetic waves, do not require a medium; we'll deal with those later in the semester.
Waves can be broadly separated into pulses and periodic waves. A pulse is a single disturbance while a periodic wave is a continually oscillating motion. There is a close connection between simple harmonic motion and periodic waves; in most periodic waves, the particles in the medium experience simple harmonic motion.
Waves can also be separated into transverse and longitudinal waves. In a transverse wave, the motion of the particles of the medium is at right angles (i.e., transverse) to the direction the wave moves. In a longitudinal wave, such as a sound wave, the particles oscillate along the direction of motion of the wave.
Surface waves, such as water waves, are generally a combination of a transverse and a longitudinal wave. The particles on the surface of the water travel in circular paths as a wave moves across the surface.
Wave Motion and behavior of waves. The student is expected to:
The easiest wave to visualize is a water wave. When a pebble is dropped in a calm pool of water, ripples travel out from the point where the pebble enters the water. The disturbance travels out from the center of the pattern, but the water does not travel with the wave. Mechanical waves—such as water waves, waves on a rope, waves in a spring, and sound waves—have two general characteristics:
A disturbance is in some identifiable medium.
Energy is transmitted from place to place, but the medium does not travel between two places.
a wave pulse is a short wave with no repeated oscillations
Kahn Video: https://www.khanacademy.org/science/physics/waves-and-optics/v/amplitude--period--frequency-and-wavelength-of-periodic-waves
Low level review: http://www.physicsclassroom.com/reviews/waves/wavesans2.cfm
Possible Lesson Episodes ( and behavior of waves. The student is expected to:“chunks”) – Primary focus on Properties of PERIODIC Waves (Frequency, wave length, amplitude, how waves can combine and some engagement with speeek ).
(in NetLogo models library) and behavior of waves. The student is expected to:
Could make an unbound (no reflection back of the wave) version of this if you’d want… Maybe as part of an intro to what they’ll see on the oscilloscope portion of the screen [the top graph] top graph] … or maybe you can just say the top images is a picture of the wave … and discuss what the axes are labeled … (time may matter in needing to get to the exploration part of the lesson).
Need to think about what you want to be available to students to work with … these are some possibilities..
We will figure out, as best we can, how to make the setup * availability of machines work for you.
MAC [this is what you’ve seen]
PC [not yet sure if this is the best for PC … more on next slide]
Other possible sites for Windows SW: availability of machines work for you.
The following slides have images etc. that might be used in availability of machines work for you.“warm up” or elsewhere in lesson
“Place the letters for these (and some others) into the table …”