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The regions in a longitudinal wave where particles are spread apart are known as:
A. Rarefactions
B. Compressions
C. Crests
D. Troughs
Answer: Rarefactions
In a longitudinal wave, the regions where particles are closest together are called:
A. Compressions
B. Rarefactions
C. Crests
D. Troughs
Answer: Compressions
The unit of frequency is:
A. Hertz
B. Newton
C. Joule
D. Pascal
Answer: Hertz
The principle that describes the behavior of two waves meeting and combining their amplitudes is called:
A. Principle of superposition
B. Principle of interference
C. Principle of diffraction
D. Principle of reflection
Answer: Principle of superposition
The change in the direction of a wave when it reflects off a surface is called:
A. Reflection
B. Refraction
C. Diffraction
D. Interference
Answer: Reflection
The phenomenon where waves combine to form regions of high and low intensity is known as:
A. Interference
B. Diffraction
C. Refraction
D. Reflection
Answer: Interference
The time interval between successive crests or troughs in a wave is called its:
A. Period
B. Frequency
C. Wavelength
D. Amplitude
Answer: Period
The change in direction of a wave when it encounters a barrier or an opening is called:
A. Diffraction
B. Refraction
C. Reflection
D. Interference
Answer: Diffraction
The distance between two consecutive compressions or rarefactions in a longitudinal wave is called its:
A. Wavelength
B. Frequency
C. Amplitude
D. Period
Answer: Wavelength