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8 - Module 3 TEST
| Question | Answer |
|---|---|
| Acoustics | The science of sound |
| Amplification | the maximum displacement on either side of the equilibrium (midpoint) position. |
| Amplitude | the maximum displacement on either side of the equilibrium (midpoint) position. |
| Angle of incidence | The angle at which light hits a reflective surface |
| Angle of reflection | The angle at which light leaves a reflective surface |
| Compression wave | (longitudinal wave)- a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
| Compression | The part of a longitudinal wave where the particles of the medium are close together. |
| Crest | Highest point of a wave |
| Decibel | Unit of sound intensity |
| Density | The ratio of mass versus volume |
| Diffraction | The apparent bending of waves around small obstacles and the spreading out of waves past small openings |
| Doppler Effect | When sound waves of an object moving relative to the observer take on a different frequency than if they were stationary. |
| Electromagnetic radiation | energy that travels in waves across space as well as through matter |
| Electromagnetic spectrum | the range of wavelengths or frequencies over which electromagnetic radiation extends |
| electromagnetic waves | waves that consist of vibrating electric and magnetic fields |
| Fiber optics | Optical fibers that can carry light over long distances that are used in communication and data transfer |
| Frequency | the number of complete wavelengths that pass a point in a given time |
| gamma rays | Electromagnetic waves with the shortest wavelengths and highest frequencies |
| Hertz (Hz) | Wave frequency is measured in |
| infrared light | Light with the longest wavelengths |
| Inner ear | Inner most part of the ear that contains the cochlea and nerve endings |
| Intensity | The loudness of sound |
| LASER | Light Amplification by Stimulated Emission of Radiation |
| Lens | An optical device which transmits and refracts light, converging or diverging the beam |
| Longitudinal wave | a wave in which the particles of the medium vibrate parallel to the direction of wave motion |
| Mach I | An object reaches this point when it breaks the sound barrier |
| Mechanical wave | A wave that requires a medium through which to travel |
| Medium | A substance that a wave can travel through |
| Meters (m) | wavelength is measured in |
| meters per second (m/s) | Wave Speed is measured in |
| microwaves | electromagnetic waves that have shorter wavelengths and higher frequencies than radio waves. |
| Middle ear | The part of the ear that contains the ossicles (ear bones) |
| Mirror | A substance that can reflect light efficiently |
| Outer ear | The part of the ear that receives sound input from the outside world |
| P wave | Primary compression wave that occurs during an earthquake |
| Photon | A bundle of light energy that moves as both a particle and a wave |
| Pitch | The high or low effect of sound based on frequency |
| Primary colors | Colors that can be added or subtracted from one another to create other colors. Red, Blue, Green, Cyan, Magenta and Yellow. |
| Prism | A substance that can refract white light separating it into its colored components |
| radio waves | electromagnetic waves with the longest wavelengths and lowest frequencies |
| Rarefaction | a part in a longitudinal wave where the particles of the medium are spread apart |
| Reflection | The change in direction of a wave from the surface of a reflective material |
| Refraction | The bending of a wave when it enters a medium where its speed changes due to differences in density |
| S wave | The transverse wave associated with an Earthquake |
| Seismograph | An instrument that records seismic waves |
| Sonic Boom | The release of a massive sound wave that occurs when an object breaks the sound barrier |
| Sound barrier | The point at which an object exceeds the speed of sound |
| Sound wave | A compression wave that carries energy to a natural or artificial device that can detect pressure changes |
| Speed of light | The speed at which light travels in a vacuum. ( 3.00 x 108 m/s) |
| Speed of sound | 343.2 meters per second or 1,126 ft/s. This is equivalent to 1,236 kilometers per hour or 768 mph |
| Supersonic | An object that can break the sound barrier |
| Surface waves | a wave that travels along the surface of a medium |
| Tinnitus | Ringing or hissing in the ear as a result of listening to high-frequency or high-intensity sounds |
| Transverse wave | a wave whose particles oscillate perpendicular to the direction that the wave travels |
| Trough | Lowest point of a wave |
| ultraviolet light | the range of light waves that have shorter wavelengths and higher frequencies than violet light in the visible range of light. |
| visible light | electromagnetic waves that are visible to the human eye |
| Wave particle duality | The dual nature of light that explains the wave and particle characteristics that light exhibits |
| Wavelength | the distance from any point on a wave to an identical point on the next wave |
| X-rays | electromagnetic waves with wavelengths shorter than ultraviolet rays, but longer than gamma rays |
Created by:
Ms. Greenup
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