# Shared Flashcard Set

## Details

Waves Vocabulary
N/A
55
Physics
03/08/2010

Term
 Wave
Definition
 Any disturbance that transmits energy through matter or space.
Term
 Medium
Definition
 A solid, liquid or gas that is vibrated.
Term
 Transverse Wave
Definition
 Waves in which the particles of the medium vibrate with an up and down motion.
Term
 Longitudinal Wave
Definition
 Waves in which the particles of the medium vibrate back and forth along the path that the wave travels.
Term
 Surface Wave
Definition
 In a body of water, is an example of a combination of both transverse and longitudinal waves.
Term
 Amplitude
Definition
 Maximum distance the wave vibrates from the rest position.
Term
 Wavelength
Definition
 The distance between any adjacent crests or compressions in a series of waves.
Term
 Frequency
Definition
 The number of waves produced in a given amount of time.
Term
 Wave Speed
Definition
 The speed at which a wave travels.
Term
 Reflection
Definition
 The bending of a wave as it passes at an angle from one medium to another. The speed of a wave depends on the medium. When the speed changes the wave changes its angle.
Term
 Reflection
Definition
 Occurs when a wave bounces back after striking an object.
Term
 Diffraction
Definition
 The bending of waves around a barrier or through an opening.
Term
 Interference
Definition
 The result of two or more waves overlapping.
Term
 Constructive Interference
Definition
 Increases amplitude when waves interact.
Term
 Destructive Interference
Definition
 Decreases amplitude when waves interact.
Term
 Standing Wave
Definition
 A wave that forms a stationary pattern (harmonic) in which portions of the wave are at a rest position due to destructive interference and other parts of the wave have a large amplitude.
Term
 Resonant Frequencies
Definition
 The frequency at which standing waves are produced.
Term
 Resonance
Definition
 When an object vibrates at or near the resonant frequency of the second object causes the second object to vibrate.
Term
 Pitch
Definition
 How log or how high you perceive a sound to be.
Term
 Infrasonic
Definition
 Sounds with frequencies that are lower than 20HZ.
Term
 Ultrasonic
Definition
 Sounds with frequencies that are higher than 20,000HZ.
Term
 Doppler Effect
Definition
 The apparent change in the frequency caused by the motion of either the listener or the source of the sound.
Term
 Loudness
Definition
 How loud or soft a sound is perceived to be.
Term
 Decibel (dB)
Definition
 The most common unit used to express loudness.
Term
 Echo
Definition
 A reflected sound wave.
Term
 Echolocation
Definition
 The process of using reflected sound waves to find objects.
Term
 Sonic Boom
Definition
 The explosive sound heard when a shock wave reaches your ears.
Term
Definition
 The emission of energy in the form of EM waves.
Term
 Electromagnetic Spectrum
Definition
 The entire range of electromagnetic waves.
Term
 Law of Reflection
Definition
 States that the angle of incidence is equal to the angle of reflection.
Term
 Incidence
Definition
 The falling of a beam of light on a surface.
Term
 Regular Reflection
Definition
 Light beams reflect off all points of the surface at the same angle.
Term
 Diffuse Reflection
Definition
 The light beams will reflect at many different angles.
Term
 Absorption
Definition
 The transfer of energy carried by light waves to particles of matter.
Term
 Scattering
Definition
 The release of light energy by particles of matter that have absorbed energy.
Term
 Transmission
Definition
 The passing of light through matter.
Term
 Transparent
Definition
 Matter through which visible light is easily transmitted.
Term
 Translucent
Definition
 Matter that transmits light but also scatters the light as it passes through matter. Wx paper is an example of translucent matter.
Term
 Opaque
Definition
 Matter that does not transmit any light.
Term
 Luminous
Definition
 Objects that produce visible light.
Term
 Illuminated
Definition
 A visible object that is not a light source.
Term
 Plane Mirror
Definition
 Mirror with a flat surface.
Term
 Concave Mirror
Definition
 Mirror that is curved inward.
Term
 Convex Mirror
Definition
 Mirror that is curved outward.
Term
 Focal Point
Definition
 The point on the axis of a mirror or lens through which all incident parallel light rays are focused.
Term
 Focal Length
Definition
 The distance between a mirror or lens through which all incident parallel light rays are focused.
Term
 Concave Lens
Definition
 A lens that is thinner in the middle than at the edges.
Term
 Convex Lens
Definition
 A lens that is thicker in the middle than at the edges.
Term
 Cornea
Definition
 A transparent membrane that protects the eye and refracts light.
Term
 Lens
Definition
 A curved transparents object that forms an image by refracting light: also part of the eye that refracts light to focus an image on the retina.
Term
 Retina
Definition
 The back surface of the eye.
Term
 Real Image
Definition
 An image through which light passes.
Term
 Virtual Image
Definition
 An image through which light does not actually pass.
Term
 Visible Light
Definition
 The very narrow range of wavelengths and frequencies in the electromagnetic spectrum that humans can see.
Term
 X-Rays
Definition
 High energy electromagnet waves that are between ultraviolet light and gamma rays in the electromagnetic spectrum.
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