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Light and Sound Wave
| Term | Definition |
|---|---|
| Waves | oscillations that carry energy |
| Oscillations | movements back and forth |
| Vacuum | space with no matter in it |
| Mechanical Waves | waves that move through matter |
| Types of Mechanical Waves | waves in water, and sound waves |
| Electromagnetic waves | waves that move through a vacuum |
| Types of Electromagnetic waves | light waves, x-rays, and radio waves |
| Wave Properties | Amplitude, wavelength, frequency, and wave speed |
| Amplitude | half way between the crest and the trough |
| Crest | high point |
| Trough | low point |
| Resting point | the amplitude line |
| Wavelength and Symbol | distance between crest to crest, and trough to trough, written as lambodia |
| Wavelength units | meters |
| 3 ways to measure Wavelengths are: | crest to crest, trough to trough, and amplitude to amplitude |
| Frequency | the # of waves that pass in a unit of time |
| Units for frequency | Hertz (Hz) |
| Wave Speed | the time it takes to move from one point to another |
| Wave Speed Units | meters per second |
| Wave Speed Eqation | frequency x wavelength |
| Medium | things that waves travel through |
| Reflection | when a wave bounces off a surface |
| Law of Reflection | a wave reflects at the same angle it moves toward the barrier |
| Reflected Ray | the post-reflected wave |
| Incident Ray | the pre-reflection wave |
| Refraction | the bending of waves as they go through mediums |
| Diffraction | the bending of waves around a barrier |
| Interference | waves colliding with each other |
| Constructive Interference | when the two waves combine to make a larger wave |
| Destructive Interference | when two waves cancel each other out |
| Absorption | the transfer of a wave's energy to what it it hits |
| Absorbed Colors | the colors absorbed by the surface it is hitting |
| Reflected Colors | the colors not being absorbed, therefore causing the object to have the same color as the reflected color |
| Electromagnetic Spectrum | the wavelengths and frequency of electromagnetic waves |
| Visible Light Spectrum | the range of electromagnetic waves visible to a human eye |
| Longitudinal Wave | waves that osculate in the same direction as they moves |
| Expansion | wavelengths getting onger |
| Compression | wavelengths getting shorter |
| Intensity (of sound) | how much energy the sound wave carries past a certain area |
| Units of Sound | Decibels (dB) |
| Pitch | Tone of a sound wave based on the frequency |
| Analog Signal | Continuous wave that carries information |
| Digital Signal | Send info as wave pulses |
Created by:
2022chko
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