Oscillations and wave anatomy

Interactive lesson
What an oscillation isInteractive lesson
Restoring force drives oscillationInteractive lesson
Natural frequencyInteractive lesson
Waves come from vibrating sourcesInteractive lesson
Pulse or periodic wave?Interactive lesson
Mechanical waves need a mediumInteractive lesson
Waves move energy, not matterInteractive lesson
Transverse or longitudinal?Interactive lesson
Crest and troughInteractive lesson
Compression and rarefactionInteractive lesson
What amplitude isInteractive lesson
What wavelength is

Oscillations and wave anatomy

Interactive lesson
Frequency and the hertzInteractive lesson
Period and frequency are reciprocalsInteractive lesson
Label a transverse waveInteractive lesson
Label a longitudinal waveInteractive lesson
Read a displacement-position graphInteractive lesson
Read a displacement-time graphInteractive lesson
Which wave graph is itInteractive lesson
Sketch a wave graphInteractive lesson
Sketch a displacement-time graphInteractive lesson
Spot the flawed wave diagramInteractive lesson
Amplitude carries the energyInteractive lesson
What a wavefront is

Wave speed and boundary behaviors

Interactive lesson
What wave speed isInteractive lesson
Wave speed is not particle speedInteractive lesson
Medium sets speed, source sets frequencyInteractive lesson
Faster vibration, shorter wavelengthInteractive lesson
The wave equation v = fλInteractive lesson
Find the speed from frequency and wavelengthInteractive lesson
Find the frequency from speed and wavelengthInteractive lesson
Find the wavelength from speed and frequencyInteractive lesson
Wavelength adjusts to a new mediumInteractive lesson
What reflection isInteractive lesson
Predict the reflected pathInteractive lesson
What refraction isInteractive lesson
Predict the bending directionInteractive lesson
What diffraction isInteractive lesson
Predict the amount of diffraction

Superposition and standing waves

Interactive lesson
The principle of superpositionInteractive lesson
Add overlapping pulsesInteractive lesson
Constructive or destructiveInteractive lesson
What interference isInteractive lesson
Predict the interference patternInteractive lesson
Name that wave behaviorInteractive lesson
Standing or travelingInteractive lesson
How standing waves formInteractive lesson
Nodes and antinodesInteractive lesson
Read a standing wave diagramInteractive lesson
Fundamental and harmonicsInteractive lesson
Sketch a standing wave pattern

Sound, the Doppler effect, and resonance

Interactive lesson
How sound is producedInteractive lesson
Sound is a longitudinal waveInteractive lesson
Pitch follows frequencyInteractive lesson
Loudness follows amplitudeInteractive lesson
Speed of sound by mediumInteractive lesson
Why the medium changes sound's speedInteractive lesson
Echo rangingInteractive lesson
What the Doppler effect isInteractive lesson
Doppler shift from a moving sourceInteractive lesson
Why a moving source shifts the frequencyInteractive lesson
Doppler shift from a moving observerInteractive lesson
Why a moving observer receives a shifted frequencyInteractive lesson
Forced vibrationInteractive lesson
What resonance isInteractive lesson
Will it resonate?Interactive lesson
Spot the resonating systemInteractive lesson
String length sets the pitchInteractive lesson
How a string instrument makes a note