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Waves
Question | Answer |
---|---|
Compressional Wave | Mechanical Wave that causes particles in matter to move back and forth along the direction the wave travels. |
diffraction | Bending of waves around an object. |
electromagnetic spectrum | complete range of electromagnetic wave frequencies and wavelengths. |
electromagnetic waves | waves that can travel through matter to empty space, includes radio waves, ultraviolet waves, X rays, and gamma rays. |
frequency | number of wavelengths that pass a given point in one second, measured in hertz. |
infrared waves | electromagnetic waves with wavelengths between about one thousandth of a meter and 700 billionths of a meter. |
intensity | amount of energy a wave carries past a certain area in each second. |
law of reflection | states that the angle the incoming wave makes with the normal to the reflecting surface equals the angle the reflected wave makes with the surface. |
pitch | human perception of the frequency of sound. |
refraction | change in direction of a wave when it changes speed as it travels from one material into another. |
reverberation | repeated echoes of sound waves |
transverse wave | mechanical wave that causes particles in matter to move at right angels to the direction the wave travels. |
ultraviolet waves | electromagnetic waves with wavelengths between about 400 billionths and 10 billionths of a meter. |
wave | disturbance that moves through matter and space and carries energy. |
wavelength | distance between one point on a wave and the nearest point moving with the same speed and direction. |