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Light Energy that form of energy that animals can see directly; visible electromagnetic radiation
Wavelength the distance between one peak and the next in a wave, or between one trough and the next
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
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 a process by which energetic electromagnetic waves move from one place to another
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
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
wave a disturbance caused by a vibration
Created by: Syd.sarrazin26