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| physical phenomena > process > physical process > motion > harmonic motion > wave > longitudinal wave | 
| longitudinal wave comparison table | |||||||
| Subject | is a kind of | has amplitude | has domain | has period | has propagation direction | has synonym | has definition | 
|---|---|---|---|---|---|---|---|
| sound wave in gas | mass motion | physics | periodic motion | A longitudinal wave propagated through a gas as a pattern of alternating high and low pressure. | 
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