• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/21

Click to flip

### 21 Cards in this Set

• Front
• Back
 Amplitude For a wave or vibration, the maximum displacement on either side of the equilibrium (midpoint) position. Beats A series of alternate reinforcements and cancellations produced by the interference of two waves of slightly different frequency, heard as a throbbing effect in sound waves. Bow Wave The V- shaped wave produced by an object moving across a liquid surface at a speed greater than the wave speed. Doppler Effect The change in frequency of wave motion resulting from motion of the wave source or receiver. Forced Vibration The setting up of vibrations in an object by a vibrating force. Frequency For a vibrating body or medium, the number of vibrations per unit time. For a wave the # of crests that pass a particular point per unit. Hertz The SI unit of frequency. It equals one vibration per second. Interference The pattern formed by superposition of different sets of waves that produces mutual reinforcement in some places and cancellation in others. Longitudinal Wave A wave in which the medium vibrates in a direction parallel (longitudinal) to the direction in which the wave travels. Ex: Sound Natural Frequency Natural frequency – A frequency at which an elastic object naturally tends to vibrate, so that minimum energy is required to produce a forced vibration or to continue vibrating at that frequency. Period The time required for a vibration or a wave to make a complete cycle; equal to 1/frequency. Refraction The bending of a wave through either a non- uniform medium or from one medium to another, caused by differences in wave speed. Resonance The response of a body when a forcing frequency matches its natural frequency. Shock Wave The cone-shaped wave created by an object moving at supersonic speed through a fluid. Sonic Boom The loud sound resulting from the incidence of a shock wave. Sound Wave A longitudinal vibratory disturbance that travels in a medium, which can be heard in the approximate frequency range 20 – 20,000 Hertz. Standing Wave A stationary wave pattern formed in a medium when two sets of identical waves pass through the medium in opposite directions. Transverse Wave A wave in which the medium vibrates in a direction perpendicular (transverse) to the direction in which the wave travels. Ex: Light Wave A disturbance or vibration propagated from point to point in a medium or in space. Wave Speed The speed with which waves pass a particular point: Wave Speed = frequency * wavelength. Wavelength The distance between successive crests, troughs, or identical parts of the wave.