- What property of a sound wave determines its loudness?
- Answer: Amplitude
- Explanation: The loudness of a sound is directly related to the amplitude of the wave. A greater amplitude results in a louder sound.
- What property of a sound wave determines its pitch?
- Answer: Frequency
- Explanation: The pitch of a sound depends on its frequency; a higher frequency corresponds to a higher pitch.
- What is the SI unit of frequency?
- Answer: Hertz
- Explanation: The unit of frequency is hertz (Hz), which measures the number of wave cycles per second.
- Which characteristic of a sound wave represents the time taken for one complete cycle?
- Answer: Time period
- Explanation: The time period (T) is the time required for one complete oscillation of a sound wave.
- Which characteristic of a sound wave is represented by the symbol λ?
- Answer: Wavelength
- Explanation: Wavelength (λ) is the distance between two successive compressions or rarefactions.
- What type of sound wave has a frequency below 20 Hz?
- Answer: Infrasound
- Explanation: Sound waves with frequencies lower than 20 Hz are called infrasound and are not audible to humans.
- What type of sound wave has a frequency above 20,000 Hz?
- Answer: Ultrasound
- Explanation: Sound waves with frequencies higher than 20,000 Hz are called ultrasound and are used in medical imaging.
- What term describes the speed at which sound waves travel through a medium?
- Answer: Velocity
- Explanation: The velocity of a sound wave is determined by the medium through which it propagates.
- Which property of sound allows us to differentiate between two sounds of the same frequency and amplitude?
- Answer: Timbre
- Explanation: Timbre is the quality of sound that helps distinguish different sources producing the same pitch and loudness.
- What type of sound is a mixture of multiple frequencies and is pleasant to hear?
- Answer: Music
- Explanation: Music consists of a combination of frequencies in a harmonic manner, making it pleasant to the ears.
