NATS 1945 Study Guide - Quiz Guide: Transverse Wave, Active Noise Control, Longitudinal Wave
19 Jun 2017
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Document Summary
When a wave propagates through a medium the energy in the disturbance is travelling from the source to the observer. Longitudinal waves move towards each other (compressing) and away from each other. Transverse waves are molecules moving perpendicular to the waves. Water waves can be both transverse and longitudinal. (cannot be seen) Amplitude is the height of the wave crest; it determines intensity, brightness, and volume. Higher amp light wave = higher density (brighter) Wavelength is the distance between adjacent crests (determines color & pitch) Frequency is the number of wavelengths leaving source each sec (1 hertz= 1 wavelength/sec) Period is the time between successive wave crests. Sound wave length, distance between compression determines the pitch, low pitch = less compression, high pitch= more compression. Light wave length can determine colour, violet has the shortest wave length and red has the longest (roygbv rainbow) High frequency sound wave = low sound wave length (low pitch) and vice versa.
