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Ch. 20 terms

waves

QuestionAnswer
Wave Any disturbance that transmits energy through matter or space.
Medium A substance through which a wave can travel.
Energy transfer through a medium When a particle vibrates it can pass energy to a particle next to it. Then, the second particle will do the same thing and pass the energy on to a third particle and so forth.
How sound waves work Sound waves require a medium. Sound energy travels by the vibration of particles in liquids solids and gases. If there are no particles to vibrate, no sound is possible.
How ocean waves transfer energy Through water
Electromagnetic waves Waves that do not require a medium.
Things the operate using electromagnetic waves Visible light, microwave ovens, TV signals, radio signals, and X-ray machines.
Classifying Waves Based on the direction in which the particles of the medium vibrate compared with the direction in which the wave travels.
How Transverse Waves move The particles vibrate with an up-and-down motion.
How Longitudinal Waves move the particles of the medium vibrate back in forth along the path that the wave travels.
Amplitude the maximum distance the wave vibrates from its rest position.
Wavelength the distance between any two adjacent crests or compressions in a series of waves.
Frequency The number of waves produced in a given amount of time.
Wave speed the speed at which a wave travels.
Wave speed formula V
Reflection when a wave bounces back after striking a barrier.
Refraction the bending of a wave as it passes at an angle from one medium to another.
Diffraction the bending of waves around a barrier or through an opening.
Interference The result of two or more waves overlapping.
Created by: AD12398
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