Investigate speed, frequency wavelength, sound
http://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Simple-Wave-Simulator
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Superposition
http://physics.bu.edu/~duffy/HTML5/interference.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Make waves on a slinky, add tension, density, drag
http://www.physicsclassroom.com/Physics-Interactives/Waves-and-Sound/Slinky-Lab
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Diffraction
http://physics.bu.edu/~duffy/HTML5/diffraction.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Wave properties
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Interference
http://physics.bu.edu/~duffy/HTML5/diffraction_grating.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Wave properties
http://www.thephysicsaviary.com/Physics/Programs/Labs/WavelengthLab/index.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Interference
http://physics.bu.edu/~duffy/HTML5/double_slit.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Wave properties
http://ophysics.com/waves1.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.
Interference
http://physics.bu.edu/~duffy/HTML5/2Dinterference_point.html
N.B. Preview is created automatically, doesn't always work and may capture splash screens.