Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
34 Cards in this Set
- Front
- Back
simple harmonic motion
|
Simple harmonic motion occurs when the restoring and displacing forces are equal in magnitude.
|
|
period
|
The amount of time needed to complete a single cycle
|
|
amplitude
|
The maximum height a wave moves from the neutral position
|
|
frequency
|
The number of cycles a wave completes in a given time usually one second.
|
|
transverse wave
|
A wave in which the motion is perpendicular to the source of the motion.
|
|
longitudinal wave
|
A wave in which the motion is in the same direction as the source. Longitudinal waves include sound waves and are the only kind of waves the normally move through fluids.
|
|
mechanical waves
|
A wave that is visible. These waves require a medium.
|
|
wavelength
|
The distance it takes for a wave to repeat itself.
|
|
wave speed
|
The speed of a wave depends on the medium it is in. It is found by v=d/t.
|
|
constructive interference
|
Occurs when two waves are on the same side of the equilibrium. The resulting wave is greater than the individual waves.
|
|
destructive interference
|
This occurs when two waves are out of phase. This results in a short period in which there appears to be no wave.
|
|
crest
|
The highest point the wave reaches.
|
|
trough
|
The lowest point the wave reaches.
|
|
node
|
A place in a wave of average pressure.
|
|
antinode
|
A place in a wave of high or low pressure.
|
|
reflection
|
Reflection occurs when a wave hits a barrier and reflects at a different. the law of reflection states the angle of reflection always equals the angle of incidence.
|
|
refraction
|
Refraction occurs when the wave moves from one medium to another, such as from deep to shallow water. The wavelength changes but the frequency does not.
|
|
diffraction
|
Diffraction occurs when the waves bend around a barrier and fill in the space behind it.
|
|
Doppler Effect
|
The frequency shift that occurs when either the sender or receiver of sound moves.
|
|
resonance
|
This occurs when the timing of the pulse of the oscillation is to the period the oscillation
|
|
timbre
|
The quality of the sound produced
|
|
What factors affect the period of a spring or mass?
|
mass, spring constant
|
|
What factors affect the period of a pendulum?
|
Length of the string and gravity
|
|
How does a change in frequency affect the wave's speed?
|
The higher the frequency the faster the wave moves.
|
|
How does a change in amplitude affect the wave's speed?
|
The amplitude and the speed of waves are not related.
|
|
How does the frequency affect the wavelength?
|
The frequency and the wavelength are inversely related.
|
|
What happens to a wave when it reaches a fixed end?
|
The pulse is bounced back on the opposite side.
|
|
What happens to a wave when it reaches a loose end?
|
The pulse reflects back on the same side?
|
|
What happens to a wave when it reaches a boundary between two media?
|
Refraction will occur. The speed of the wave and the wavelength will change, but the frequency will not.
|
|
Law of Reflection
|
The law of reflection states that the incident and reflected angles will have the same measure.
|
|
What happens when waves pass through an opening?
|
They will diffract. The waves will bend and gradually fill up the space behind the opening. The smaller the opening the bigger the wavelength.
|
|
What are the conditions needed for resonance on a string?
|
-String must be attached on both ends
-Occur at every half wavelength -Must be a node at each end |
|
What are the conditions for resonance in an open pipe?
|
-Must have a node at each end
-Occurs at every half length |
|
What are the conditions for resonance in a closed pipe?
|
-Must have a node at one and an antinode on the other
-Occur only in odd number harmonics -Every half wavelength staring with 1/4, then 3/4, 5/4 etc... |