Waves Physics A1 0.0 / 5 ? PhysicsWavesASAQA Created by: SantoshCreated on: 16-04-16 11:15 Progressive Wave A wave that travels through a space transferring energy 1 of 24 Wave An oscillation of particles 2 of 24 Cycle One complete vibration of a wave 3 of 24 Displacement How far a point on the wave has moved from a undisturbed position 4 of 24 Amplitude The maximum displacement of a wave from a undisturbed position 5 of 24 Wavelength Distance between wave peaks 6 of 24 Period The time taken for a whole cycle to complete 7 of 24 Frequency The number of waves per second 8 of 24 Phase A measurement of the position of a certain point along the wave cycle 9 of 24 Phase Difference The amount of one wave lags behind another 10 of 24 Reflection When a wave bounces off a surface 11 of 24 Refraction When a wave changes direction and speed as it goes through a different medium 12 of 24 Longitudinal Wave Particles that vibrate parallel to the direction that energy travels in 13 of 24 Transverse Wave Vibrations that are in right angles to the direction that energy travels in 14 of 24 Normal Imaginary line at right angles to the boundary of 2 materials 15 of 24 Total Internal Reflection Complete reflection of light at a boundary within a material that has a higher refractive index than it's surroundings 16 of 24 Critical Angle When angle of refraction is 90 degrees 17 of 24 Refractive Index The ratio of a wave's speed between 2 materials 18 of 24 Node A point of minimum amplitude on a stationary wave 19 of 24 Antinode A point of maximum amplitude on a stationary wave 20 of 24 Polarisation When vibrations of a wave oscillates in one direction only 21 of 24 Constructive Interference When 2 waves meet and their displacements are in the same direction, the displacements combine to give a bigger displacement 22 of 24 Destructive interference When a positive displacement meets with a negative displacement which cancel out 23 of 24 Coherent When waves have the same frequency and wavelength and a fixed phase dfference 24 of 24
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