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Science 8 Ch 17

Waves, Sound, and Light

QuestionAnswer
The mass per cubic meter of a substance Density
A disturbance that carries energy through matter or space. Wave
Mechanical wave that causes particles in matter to move at right angles to the direction the wave travels. Transverse wave
Mechanical wave that causes particles in matter to move back and forth along the direction the wave travels. Compressional wave
Distance between one crest or compression on a wave and the next one moving with the same speed and direction. Wavelength
Number of wavelengths that pass a given point in one second, measured in hertz (Hz). Frequency
When a wave is reflected, the angle of incidence is equal to the angle of reflection. Law of Reflection
The change in direction of a wave as it travels from one material to another. Refraction
Bending of waves around an object. Diffraction
A recognition, sense, or understanding of something. Perception
Amount of energy a wave carries past a certain area each second. Intensity
The human perception of the frequency of sound. Pitch
Repeated echoes of sound waves. Reverberation
A range of values or properties. Spectrum
Waves that can travel through matter or empty space. Electromagnetic waves
Complete range of electromagnetic wave frequencies and wavelengths. Electromagnetic spectrum
Heat energy is transmitted through these waves. Infrared waves
Electromagnetic waves that can cause damage to the eyes and skin. Ultraviolet waves
Created by: rwaters