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waves in physics
| Question | Answer |
|---|---|
| bottom of a transverse wave | trough |
| the distance between identical points on 2 adjacent waves | wavelength |
| the distance between the top (or bottom) to the resting position on a wave | amplitude |
| the material that a mechanical wave passes through | medium |
| wave that can travel through a vacuum (do not need a medium) | electromagnetic |
| interference from "in sync" waves that add up | constructive |
| the time it takes to complete a wave cycle (T) | period |
| the number of cycles completed in a certain period of time (f) | frequency |
| T = 1/f | formula for period |
| interference from "out of sync" waves that cancel each other out | destructive |
| EM band with longest wavelength and lowest frequency | radio waves |
| EM band with shortest wavelength and highest frequency | gamma rays |
| f = 1/T | formula for frequency |
| speed of light | 3.0 x 10^8 m/s |
| speed of sound | 3.4 x 10^2 m/s |
| zero displacement of 2 overlapping waves | node |
| the maximum displacement of 2 overlapping waves | antinode |
| area of empty space | vacuum |
| top of a transverse wave | crest |
| state of matter that mechanical waves travels fastest through | solids |
| the less compressed area in a longitudinal wave | rarefaction |
| the most compressed area in a longitudinal wave | compression |
| wave where particles move perpendicular to the direction of the wave | transverse wave |
| wave where particles move parallel to the direction of the wave | longitudinal wave |
| wave where particles move in circles | surface wave |
| law stating that 2 waves can be in the same place at the same time | law of superposition |
| wave interaction that creates a larger resultant wave than the individual waves that formed it | constructive interference |
| wave interaction that creates a smaller resultant wave than the individual waves that formed it | destructive interference |
| wave interaction that cancels out both individual waves that formed it | completely destructive interference |
| this law states that the angle of incidence is equal to the angle of reflection | Law of reflection |
| when a wave hits a surface and bounces back | reflection |
| when a wave bends or spreads due to going around an object or through a small opening | diffraction |
| when a wave bends due to crossing over into a different medium ex. straw in halfway filled up | refraction |
| imaginary line that runs perpendicular to the angle of reflection and angle of incidence | normal |
| transfer of energy by a wave to the medium through which it travels | absorption |
| passage of light through an object | transmission |
| the product of wavelength times frequency (m/s) | wave speed |
| SI unit for frequency | Hertz (hz) |
| apparent increase in wavelength caused by celestial bodies moving away from Earth | red shift |
| apparent decrease in wavelength caused by some nearby stars moving closer to Earth | blue shift |
| this effect is the apparent change in frequency and wavelength due to the sound/light source and/or observer moving | Doppler Effect |
Created by:
cadetjt
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