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Science 8 Ch 17
Waves, Sound, and Light
| Question | Answer |
|---|---|
| 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
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