Vocabulary
A disturbance in matter that transfers energy
Wave
The highest point on a wave
Crest
What are the 3 physical mediums? and give an example of each
solid, liquid, and gas
What is the equation for wavelength?
Wavelength = velocity / frequency
What scale is intensity measured on?
One complete cycle of a singular wave
period
The lowest point on a wave
Trough
What type of wave must move through one of the 3 physical mediums? give an example
Mechanical
What is the equation for velocity?
velocity = wavelength x frequency
What part of your ear converts the acoustic waves into electrical signals in there brain?
Tympanic membrane or eardrum
What is periodic motion?
waves repeat in regular/equal time intervals
The distance between crest to crest or trough to trough
Wavelength
What type of wave does not need a physical medium to travel? give an example
Electromagnetic waves
What is the equation for frequency?
frequency = velocity / wavelength
What is pitch and how does it relate to frequency?
pitch - how high or low a sound is
low pitch = low frequency
high pitch = high frequency
What is frequency?
a measure of how many crests hit a certain point every second
The height of the wave
Amplitude
What type of wave has the direction of propagation and oscillation parallel to one another? give an example
Longitudinal wave
sound waves
What 2 things does the speed of sound depend on?
the medium and the temperature
How do ultrasounds and sonic work?
give an example of each
Sensors create an image of any obstruction in its path and reflect it
babies in utero and submarines
What is the Doppler Effect?
A change in sound frequency caused by motion
What's the difference between a wave pulse and a wave train?
What type of wave moves in a circular motion? and give an example
Surface wave
Buoy floating in water
What is the speed of sound equation?
V = (331.5+0.6T)m/s
Explain how the Doppler Effect works
Constant frequency is always being emitted.
Compressed in front frequency is shorter/higher
Stretched out behind frequency is longer/lower