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14 Cards in this Set
- Front
- Back
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Propagation |
The process of conveying energy through space via wave motion |
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Mechanical Wave |
Sound, C = roughly 343 m/s |
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Electromagnetic waves |
Light waves, radio waves, C = roughly 300,000,000 m/s |
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A mechanical wave motion requires |
• a medium • a mechanical disturbance |
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Medium |
A substance that occupies a space (a solid, a fluid, or a gas) |
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Mechanical disturbance |
An event that causes a change in a medium |
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Two of the most common classes of mechanical waves |
1. Longitudinal waves 2. Transverse waves |
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Longitudinal waves |
Waves in which the particles of the medium are displaced in the same direction as the wave propagation (sound) |
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Longitudinal waves contain alternating areas of... |
1. Compression 2. Refraction |
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Compression |
A bunching of particles causing increased density |
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Rarefaction |
A spreading of particles causing decreased density |
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Transverse waves |
The particles of the medium are displaced in a direction that is perpendicular to the direction of wave propagation |
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To make a sound requires |
1. A source 2. A medium 3. A receiver |
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Sound |
1. Is a disturbance in an elastic medium that propagates through a medium as the longitudinal wave motion 2. A stimulus that causes an auditory sensation 3. In auditory sensation |
