Standing Waves
This is a point on a standing wave with zero displacement.
What is a node?
A apparent change in frequency of a sound wave due to motion of the source and/or observer.
What is the Doppler Effect?
Also known as Mach 1.
What is the speed of sound?
How a wave returns after hitting a fixed end barrier.
What is inverted?
The spreading out of a wave after it passes through a small opening.
What is diffraction?
This is the point on a standing wave with maximum displacement.
What is an antinode?
This occurs to the perceived frequency of a sound wave when the source and observer are moving towards each other.
What is increase frequency?
Traveling at this speed causes the formation of a shock wave (Mach cone) and produces a sonic boom.
Greater than the speed of sound.
How a wave returns after hitting a free end barrier.
What is not inverted or upright?
This is a line or surface connecting all points in a wave that are in the same phase of motion (lined up).
What is a wavefront?
The wavelength of a wave when a 4 m long string medium is showing 4 antinodes.
What is 2 m?
The direction the source is moving from the observer if the percieved frequency of the sound wave is decreasing.
What is away from?
The Mach number of a jet traveling at 662 m/s in air at STP.
What is Mach 2?
What is a trough?
A line of constant destructive interference on a wavefront.
What is a nodal line?
The wavelength of a wave going through a 2 m string so only one antinode is seen.
What is 4 m?
A car's horn is 400 Hz as observed by the driver. As the driver approaches an observer, the wavelength of the sound wave is observed as...
Shorter.
The minimum speed a plane will travel if it is supersonic.
What is 331 m/s?
What returns when a crest hits a free end boundary.
What is a crest?
A line of constant constructive interference on a wavefront.
What is an antinodal line.
The wavelength of a vibrating 3 m string that shows 3 antinodes.
What is 2 m.
After an ambulance passes by a stationary observer, both the pitch and the tone of the sound will be...
Lower.
The speed of a jet traveling at Mach 3.
What is 993 m/s?
This will only change when a wave hits a different medium boundry.
What is the speed?
This experiment creates interference patterns of alternating constructive and destructive regions within the medium.
What is the double-slit experiment?