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MVMS: waves
Light, Sound and Waves
| Question | Answer |
|---|---|
| White light | all colors of the rainbow |
| Primary colors of light | red, green, and blue |
| Light | a type of wave that carries energy, no medium necessary |
| Reflected | waves bounce off of surfaces |
| Refracted | waves bend as they travel through different mediums |
| Diffraction | waves bend around a barrier |
| Opaque | material that allows no light to pass through (wall) |
| Translucent | material that allows some or little light to pass through (stained glass window) |
| Transparent | material that allows almost all light to pass through (regular glass window) |
| ROYGBIV | color order of the visible light spectrum |
| Wave | repeating disturbances or movements that carry or transfer energy through matter or space |
| Matter | anything that has mass and takes up space |
| Mechanical waves | waves that need matter to be able to transfer energy |
| Medium | the matter that energy travels on |
| Transverse/longitudinal wave | matter moves at right angles to the direction of the wave |
| Compression wave | matter moves forward and backward |
| Sound wave | compression waves, travel faster in solids, cannot travel in space due to the fact they need a medium |
| Wavelength | the distance between one point on a wave and the identical point on the next wave |
| Amplitude | the distance measured from the line of origin/rest position straight up to the crest or down to the trough. Related to the energy a wave can carry. Larger amplitude the greater the energy |
| Frequency | the number of waves that pass a fixed point in one second. Measured in hertz (Hz) |
| Crest | the highest point on a wave |
| Trough | the lowest point on a wave |
| Compression | the densely packed area of a compression wave |
| Rarefaction | the less dense area of a compression wave |
| Constructive interference | two waves with the same frequency overlap and form a single larger wave. |
| Destructive interference | when waves of different frequencies overlap and cancel out each other. |
| Intensity | the amount of energy that flows through a certain area in a specific amount of time. |
| Loudness | the perception of intensity. The higher the intensity the louder the sound |
| Decibels | the measure of intensity of a sound, abbreviated by dB |
| Pitch | the highness or lowness of a sound, pitch depends on the frequency of the sound wave |
| Ultrasonic waves | sound waves with frequencies above 20,000 Hz |
| Infrasonic waves | sound waves with frequencies below 20 Hz (subsonic) |
| Doppler effect | the change in frequency that occurs when the source of the sound is moving in relative to the listener |
Created by:
amastria
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