# Sciece Ch.1

 Wave A periodic disturbance in a solid, liquid, or gas as energy is transmitted through a medium. Medium Substance through which a wave can travel. Transverse Wave A wave in which the particles of the medium move perpendicularly to the direction the wave is traveling. Longitudinal Wave A wave in which the particles of the medium vibrate parallel to the direction of wave motion. Surface Wave A combination of longitudinal and transverse waves. Particles move in a circulation motion. Sound Wave A longitudinal wave that is caused by vibrations and that travels through a material medium. Mechanical Wave Waves that need a medium. Electromagnetic Waves Light waves. Do not require a medium. Crest Highest point on a transverse wave. Trough Lowest point between each crest. Compression Part of a longitudinal wave where th particles are crowded. Rarefaction Part where the particles are spread apart. Rest Position The point where the particles of a medium stay when there are no disturbances. Amplitude The maximum distance that the particles of a wave's medium vibrate from their rest position. Wavelength The distance from any point on a wave to an identical point on the next wave. Frequency The number of waves produced in a given amount of time. Wave Speed The speed at which a wave travels through a medium. Reflection The bouncing back of a ray of light, sound, or heat when the ray hits a surface which the speed of the wave differs. Refraction The bending of a wave as the wave passes between two substances in which the speed of the wave differs. Diffraction A change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening. Interference The combinaton of 2 or more waves that results in a single wave. Constructive Interference When the crests of one wave overlap the crests of another wave or waves. Destructive Interference When the crests of one wave and the troughs of another wave overlap. Standing Wave A pattern of vibration that simulates a wave that is standing still. Resonance A phenomenon that occurs when 2 objects naturally vibrate at the same frequency; the sound produced by one object causes the other object to vibrate. AuthorNicole ID68865 Card SetSciece Ch.1 DescriptionScience Ch.1 Updated2011-03-01T04:23:35Z Show Answers