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Mechanical Waves
Waves that require a medium for energy transfer, such as sound or water waves.
Reflection
The bouncing of a wave off a surface, changing its direction.
Absorption
The transfer of energy by a wave to the medium through which it travels.
Transmission
The passage of a wave through a medium.
Diffraction
The change in direction of a wave when it travels by the edge of an object or through an opening.
Amplitude
The height of a wave measured from the resting position, related to the energy of the wave.
Frequency
The number of waves that pass a point in one second, inversely related to wavelength.
Cochlea
A fluid-filled chamber in the inner ear, responsible for converting sound waves into nerve signals.
Opaque
Materials that do not allow any light to pass through; cannot see objects behind them.
Transparent
Materials that allow almost all light to pass through, allowing clear visibility of objects behind them.
Translucent
Materials that allow most light to pass through, but scatter it, making objects appear blurry.
Speed of Sound
The variable rate at which sound waves travel, faster in denser materials.
Speed of Light
The speed at which light waves travel through a vacuum, approximately 300,000 km/s.
Echo
The reflected sound wave that is heard after the original sound wave has been produced.
Intensity
The amount of energy that passes through a square meter of space in one second.
Note 
Flashcard (21)