Interference
Diffraction
Doppler Effect
Standing Waves
Grab Bag
100

This is the part of a standing wave with the most amplitude.

What is Antinode

100

This property of waves leads to them spreading out from a single point

What is diffraction?

100
Distance between any two corresponding positions on a wave
What is wavelength
100

This form of instrument forms a standing wave with Antinodes at each end.

What is open pipe

100

This temperature of air leads to a slower wave, causing a lower frequency.

What is cool air?

200

This is the part of the standing wave with zero amplitude

What is Node

200
Effect occuring when two waves meet
What is interference
200
Change in observed frequency caused by relative movement of source and observer.
What is Doppler effect
200

This is a longitudinal wave that requires a medium

What is sound wave

200

This occurs when the wavelength fits exactly inside the object, making it vibrate without being touched.

What is Resonance?

300

This occurs when two waves occur on top of each other.

What is superposition

300
When wave collides with boundary, the reflected wave has same speed as incident wave but opposite polarity.
What is phase change
300

This is the observed frequency of a wave when source or observer is moving (f')

What is apparent frequency

300

This is the lowest frequency that can fit in a standing wave.

What is the fundamental frequency/First Harmonic

300

Changing this value, without touching the light, will change the distance between the maxima in diffraction.

What is d, the distance between the slits?
400

at angles larger than 20o we  can no longer use this formula due to small angle approximation.

What is nλ = dx/L

400

This is a wave that oscillates parallel to the direction the wave is travelling in

What is a longitudinal wave

400

The graph of perceived frequency will show this shape when the source object is accelerating.

What is a curved line?

400

While some standing waves can form any harmonic, this one only forms harmonics of odd integers.

What is a closed-open pipe?

400

This is often referred to as the "voice" of an instrument, given by variation to the pure tone it plays.

What is timbre?

500

When light is shone through a diffraction grating, this is the area where path difference is not an integer.

What is minima.

500

This appears in reverse order when all wavelengths are shone through a diffraction grating together.

What is a rainbow / spectrum.

500

This is a change in spectral lines from stars due to their relative motion to Earth.

What is red shift?

500

Changing this is how all instruments can manipulate the pitch you hear when they are played.

What is (String/Pipe) Length

500
The pattern observed when light is shone through this is not the usual, instead, it forms a square made of dots.

What is diffraction grid/cloth?

M
e
n
u