Waves Flashcards
How are sound waves produced
They are produced mechanically
how do you measure the speed of sound
S= D / T
what is the relationship between frequency and pitch
They both are how many waves are in a bar
What’s the relationship between the amplitude of and volume of loud notes and quite notes
the Relationship is how high the waves are
true or false? transverse waves are perpendicular at the right angles
true
do sound have different frequency
yes they do
true or false waves are movements of sound
false
describe longitudinal waves
in longitudinal waves the substance moves parallel to the direction of the motion of the wave
What level of volume can begin to damage your hearing?
Any sound(s) over 100 dB can damage our hearing.
What is the range of human hearing?
20Hz - 20,000Hz
What is the formula for wavelength
Wavelength = velocity divided by frequency
What makes a sound an “Ultrasound”
Any sound that is over 20,000Hz is an Ultrasound
Are there any methods of reducing noise level?
Use items such as sound dampening foam or use a pair of noise cancelling headphones that will produce a mirror of unwanted noise that will cancel it.
What can ultrasound be used for?
Imaging babes in a whom, imaging kidney stones and breaking-down kidney stones
what is the threshold for hearing?
0dB
What is the unit for time
Seconds
State the units of wavelength.
Metre
what is the range of human hearing ?
(20-20,000Hz).
What formula do you use to calculate the frequency from the period
Frequency = 1 over period (F = 1/T)
What is the wave speed?
Distance travelled by a wave per second.
What is the equation for wavelength?
v=d/t
What is frequency?
Number of waves per second.
What is the symbol and units for frequency?
Symbol=F, units=Hertz(Hz).
What is the term period as the time taken for one wave to pass a fixed point
Frequency
What is the period of a wave from a graph
The time period for one of the things from a cycle
