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waves
vocab
| Definition | |
|---|---|
| Light energy | that form of energy that animals can see directly; visible electromagnetic radiation |
| wavelength | the distance between one peak and the next on a wave |
| frequency | the number of cycles a wave completes in a period of time; the number of times something happens in a period of time |
| spectrum | a range of electromagnetic frequencies; e.g. the light spectrum is the range of frequencies of visible light (related term: electromagnetic spectrum) |
| earthquake | a sudden shaking of the ground caused by the movement of rock underground |
| vacuum | an area in which there is no matter |
| tectonic plate | one of several huge pieces of Earth's crust |
| vocal | having to do with the voice or speaking |
| sound | a vibration that travels through a material, such as air or water; something that you sense with your hearing |
| electromagnetic spectrum | the full range of frequencies of electromagnetic waves |
| sound wave | a sound vibration as it is passing through a material: Most sound waves spread out in every direction from their source. |
| radiant energy | energy that does not need matter to travel; light |
| radiation | electromagnetic energy (related term: radiate) |
| vibration | the rapid movement of an object back and forth |
| seismic | having to do with earthquakes or earth vibrations |
| amplitude | height or "strength" of a wave |
| longitudinal wave | a wave that occurs when the particles of a medium move parallel to the direction of the wave |
| transverse wave | a wave that occurs when the particles of a medium are displaced perpendicularly to the direction of the wave |
| detect | to notice or find, often with the help of a science tool (related word: detection, detector) |
| ultraviolet | a type of electromagnetic radiation that has a higher frequency than violet light: Ultraviolet light is invisible to humans. |
| infrared | electromagnetic energy that has a lower frequency than visible light and is beyond the color of red on the light spectrum: Infrared light is invisible to humans |
| trough | the lowest point of a wave |
| refraction | a change in the direction and velocity which occurs when a seismic or electromagnetic wave travels from one material into another of different density, state, or elasticity |
| reflection | to strike a surface and bounce back in the opposite direction (related word: reflection) |
| wave | a disturbance caused by a vibration; Waves travel away from the source that makes them. |
Created by:
tre.adcox26
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