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Wave Unit
| Term | Definition |
|---|---|
| Wave | A disturbance that transfers energy from place to place |
| Medium | Material through which a wave travels |
| Energy | The ability to do work |
| Mechanical Wave | A disturbance in matter that carries energy from one place to another |
| Surface Wave | A wave that occurs at the surface between 2 mediums |
| Electromagnetic Waves | Transverse waves consisting of changing electric fields and changing magnetic fields |
| Transverse Waves | Waves that move the medium at right angles to the direction in which the waves travel. |
| Longitudinal Waves | A wave in which the particles move parallel to the path of the wave |
| Crest | Highest point of a wave |
| Trough | Lowest point of a wave |
| Compression | The part of a longitudinal wave where the particles of the medium are close together. |
| Rarefaction | A part in a longitudinal wave where the particles are spread apart |
| Wavelength | Horizontal distance between the crests or between the troughs of 2 adjacent waves |
| Amplitude | Heigh of a wave |
| Frequency | The number of complete wavelengths that pass a point in a given time. |
| Electromagnetic Spectrum | All of the frequencies or wavelengths of electromagnetic radiation |
| Radio Waves | Electromagnetic waves with the longest wavelengths and lowest frequencies |
| Infrared Rays | Electromagnetic waves with shorter wavelengths and higher frequencies than microwaves |
| Visible Light | Electromagnetic waves that you can see |
| Ultraviolet Rays (UV) | Electromagnetic waves with wavelengths shorter than visible light, but longer than x-rays |
| X-Rays | Electromagnetic radiation having a very short wavelength |
| Gamma Rays | High-energy electromagnetic waves emitted from a nucleus as it changes from an excited state to a ground energy state |
| Reflection | The bouncing back of a wave when it hits a surface through which it cannot pass |
| Refraction | Bending of Light |
| Diffraction | The bending of a wave as it moves around an obstacle or passes through a narrow opening |
| Interference | The combination of 2 or more waves that results in a single wave |
| Constructive Interference | The interference that occurs when 2 waves combine to make a wave with a larger amplitude |
| Destructive Interference | The interference that occurs when 2 waves combine to make a waves with a smaller amplitude |
Created by:
tspence