Sound Waves
Sound waves are transverse or longitudinal
Longitudinal
Matter in the medium of a longitudinal wave moves in what direction?
Parallel to the direction of the motion of a wave
In transverse waves the wave vibrates at what direction relative the movement of the wave
Perpendicular
What is the equation for wave speed?
speed = wavelength * frequency
What is the a wave's period?
The amount of time it takes a wave to move 1 wavelength
Sound waves require a ___________ to propogate
medium
Earth quake S waves are considered ________ waves
Longitudinal
Any of the electromagnetic waves
Frequency = 100 Hz
Wavelength = 5 m
Wave speed = ?
Wave Speed = 500 m/s
What is a wave's frequency? What is the unit for frequency?
The number of waves that move past a point in a second
Hertz = 1/seconds
What effect is responsible for pitch of objects moving toward you to increase?
The doppler effect
What are the two parts of a longitudinal wave called?
Compression and rarefaction
How do you measure amplitude in a transverse wave?
The distance from the equilibrium position of the wave to the peak or trough of the wave
Frequency = 4 Hertz
Period = ? Give the units
What is the relationship between frequency and wavelength?
As frequency increases wavelength decreases
Increasing the amplitude would do what to human perception of a sound wave?
Increase the loudness of the soundwave
The distance between the nearest corresponding/repeating points on the wave
The distance from nearest pair of like point to like point on a wave
Period = 0.25seconds
Wavelength = 5m
Wave Speed = ?
Wave speed = Wavelength * frequency
Wave speed = Wavelength * 1/period
Wave speed = 5m * 1/0.25 = 20m/s
In which material would a sound wave move the fastest? Why? A hot spoon, a cold spoon, or a room temperature spoon
A hot spoon because the atoms in the spoon already are moving quickly meaning they will hit/push on the next atoms faster
Increasing the frequency of a sound wave would do what to human perception of the sound
It would increase the pitch
Calculate the frequency of a longitudinal wave if the speed is 10m/s and the wavelength is 5m
v = lambda*f
f = v/lambda
f = 10/5 = 2
What type of earthquake waves are transverse? Give 1
Surface waves or Body: S waves
Wave speed = 40m/s
Period = 0.2seconds
Frequency = ? (Include units!)
Frequency = 1/Period = 1/0.2 = 5 Hertz
What are the 2 types of seismic waves?
Surface Waves and Body Waves