Which of the following statements about wave motion is true?
Correct answer: B. Waves transport energy without transporting matter
- A. Waves transport energy and matter
- B. Waves transport energy without transporting matter
- C. Waves transport matter but not energy
- D. Waves do not transport matter or energy
Explanation
A wave transports its energy without transporting matter. Waves are seen moving through an ocean or lake, yet the water always returns to its resting position. Energy is transported through the medium, yet the water molecules are not transported.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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