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 Propagation Of Sound Waves 40 Flashcards |
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What is the primary mechanism through which sound is produced? |
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Vibrations of an object. |
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Fill in the blank: Sound requires a material ______ to propagate. |
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Medium |
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True or False: Sound can travel through a vacuum. |
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False. Sound requires a medium to propagate and cannot travel in a vacuum. |
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What type of wave is created by a vibrating string, where particles move parallel to the direction of wave travel? |
Card: 7 / 40 |
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Longitudinal wave |
Card: 8 / 40 |
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Riddle: I can’t be heard in space, but I travel through air, water, and solids with flair. What am I? |
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Sound |
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Which property of a wave is defined as the maximum displacement from its mean position? |
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Amplitude |
Card: 12 / 40 |
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Fill in the blank: The time taken for one complete vibration is called the ______. |
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Time period |
Card: 14 / 40 |
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True or False: The frequency of a wave is dependent on its amplitude. |
Card: 15 / 40 |
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False. Frequency depends on the vibrating source, not amplitude. |
Card: 16 / 40 |
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What is the relationship formula between frequency, time period, and number of vibrations? |
Card: 17 / 40 |
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F = 1/T |
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Riddle: I travel fastest through steel, slowest in air, I’m not light but I can make you hear. What am I? |
Card: 19 / 40 |
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Sound |
Card: 20 / 40 |
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What is the speed of sound in air at normal temperature and pressure? |
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Approximately 330 m s⁻¹ |
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Fill in the blank: The distance between two consecutive compressions in a longitudinal wave is called ______. |
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Wavelength |
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True or False: Sound speed is affected by pressure in a gas. |
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False. Speed is independent of pressure in a gas. |
Card: 26 / 40 |
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What is the primary reason sound travels faster in solids than in gases? |
Card: 27 / 40 |
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Higher elasticity in solids. |
Card: 28 / 40 |
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Riddle: I’m a frequency below 20 Hz, unheard by humans, yet felt by some. What type of sound am I? |
Card: 29 / 40 |
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Infrasonic sound |
Card: 30 / 40 |
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Which type of sound is defined as frequencies above 20 kHz? |
Card: 31 / 40 |
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Ultrasonic sound |
Card: 32 / 40 |
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Fill in the blank: The speed of sound in a medium is influenced by its ______ and elasticity. |
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Density |
Card: 34 / 40 |
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True or False: The speed of sound increases with temperature in gases. |
Card: 35 / 40 |
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True. Speed increases with temperature as density decreases. |
Card: 36 / 40 |
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What is the formula that relates wave velocity, elasticity, and density? |
Card: 37 / 40 |
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V = √(E/ρ) |
Card: 38 / 40 |
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Riddle: I’m used in medical imaging and travel faster in liquids than in gases. What am I? |
Card: 39 / 40 |
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Ultrasound |
Card: 40 / 40 |
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