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# Waves Review

### Mastery Assessment Waves review

TermDefinition
Crest The highest point of a transverse wave.
Trough The lowest point of a transverse wave.
Mechanical waves Require a medium to pass through.
Medium Solid, liquid, or gas
Longitudinal waves move side to side and parallel to the mediums. look like a slinky
Transverse Waves Waves that move perpendicular to their mediums.
Compressions When a longitudinal wave is scrunched together.
Rarefaction When a longitudinal wave is spread a part.
Frequency How many times a wave occurs, also measures in hertz
Amplitude Measured from the crest to the resting point or the trough to the resting point.
Speed Equals Wavelength X frequency
Reflection When a wave hits an object and bounces back.
Refraction When a wave goes into a new medium and bends at an angle.
diffraction a wave moving around a barrier. When it going through a tiny space and spreads out into an opening.
Interference When waves meet and interact
Constructive interference When waves meet and the amplitude Builds
Primary colors of light Blue, green, and red- combined together they make white
Primary colors of pigments Yellow, magenta, cyan- Combined together they make black.
Elasticity The ability for a material to bounce back after being disturbed.
Pitch How high or low the sound seems to someone. As frequency increases, this increases.
Doppler Effect As an object approaches a person the pitch and frequency are higher. As the noise goes further away the pitch and frequency decrease, causing the sound to be lower.
Electromagnetic Spectrum Made of waves the are electric and magnetic. We use this for communication
Created by: kljackson19