3rd 9 Weeks Test Worksheet

A system that uses the reflection of underwater sound waves to detect objects
Sound with frequency above 20,000 Hz and cannot be heard by humans.
The study of sound.
The process of locating objects by emitting sound and then interpreting the sound waves that are reflected.
A hollow chamber filled with air that amplifies sound when the air inside of it vibrates.
A vibration whose frequency is a multiple of the fundamental frequency.
Describes the differences between sounds of the same pitch and loudness.
The change in wave frequency due to a wave source moving relative to an observer or an observer moving relative to a wave source.
How high or low a sound seems to be.
A unit of sound intensity.
The human perception of sound volume and primarily depends on sound intensity.
The amount of energy that passes through a certain area in a specific amount of time.
Any collection of sound that are deliberately used in a regular pattern.
The process by which an object is made to vibrate by absorbing energy at its natural frequencies.
Locations where the interfering waves always cancel.
A special type of wave pattern that forms when waves equal in wavelength and amplitude but traveling opposite directions continuously interfere with each other.
The process of two or more waves overlapping and combining to form a new wave.
The bending of a wave around an object.
The bending of a wave caused by a change in its speed as it travels from one medium to another.
The measure of the size of the disturbance from a wave.
The blank of a wave is the amount of time it takes one wavelength to pass a point.
The blank of a wave is the number of wavelengths that pass a fixed point each second.
The less-dense region of a longitudinal wave.
The more dense region of a longitudinal wave.
The low points of a transverse wave.
Waves that can travel only through matter.