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100
What causes mechanical waves?
A disturbance in matter. 
100
How is wavelength related to frequency for waves moving at a constant speed? 
Increasing the frequency of a wave decreases it's wave length. 
100
What causes refraction when a wave enters a medium at an angle?
One side of the wave moves more slowly then the other side. 
100
Describe the property Frequency
Depending on how fast the source of the sound vibrating is frequency.
100
Why Are the materials used in construction of a concert hall important? 
It's important because it makes sure its echoes so that everyone in the could can hear. 
200
What are the three main types of mechanical waves?
Transverse, longitudinal, and surface waves. 
200
How is energy of a wave related to its amplitude?
The more energy a wave has, the greater is it's amplitude 
200
What determines how much a wave diffracts when it encounters an opening or obstacle?
The size of its wave length
200
Describe the property pitch
The frequency of a sound. Depends on frequency 
300
For each type of wave, compare the vibrations of the medium to the direction of the wave. 
Transverse wave travels at a right angle, longitude wave moves parallel, and surface waves move along a surface separating two medias. 
300
Describe two ways you could measure the wavelength of a longitudinal wave. 
Crest to crest or trough to trough. 
300
List the type of interference
Constructive interference and Destructive interference
300
Name two uses for ultrasound
Sonar, ultra-sound imaging 
400
Name one example of each type of wave.
Transverse- Shaking crumbs off a blanket. Longitudinal- Earthquakes. Surface- Ocean waves
400
Describe how you could measure the amplitude of a transverse wave.
Rest location to crest. 
400
Describe the property of speed.
Travel fastest through solid and slowest in gases and moves 342/ms 
400
What is the Doppler effect? 
A change in sound frequency caused by the motion of the sound source, motion of the listener, or both. 
500
How is the vibration of the source related to a wave's frequency?
A wave's frequency equals the frequency of the vibrating source producing the wave. 
500
How is a wave changed by reflection?
The wave could be flipped upside down. 
500
Describe the property loudness.
the rate at which a wave energy flow through a given area. It's measure in Decibels. 
500
What are the ear's three main regions describe the function of each region. 
Outer ear which is where the eardrum is, middle ear which determines the frequency, and inner ear which send electrical impulses to the brain.