Sound is a mechanical energy which produces sensation of hearing. Sound is produced due to vibration of different objects. Sound wave propagates as compressions & rarefactions in the medium. Sound waves are longitudinal waves.
Q. What are the three main characteristics of sound?
The basic properties of sound are: pitch, loudness and tone. Figure 10.2: Pitch and loudness of sound. Sound B has a lower pitch (lower frequency) than Sound A and is softer (smaller amplitude) than Sound C.
Table of Contents
- Q. What are the three main characteristics of sound?
- Q. What is nature of sound waves?
- Q. Are Sound Waves physical?
- Q. How can you see sound waves?
- Q. Why can light travel through a vacuum but sound Cannot?
- Q. What is Earth’s vibrational frequency?
- Q. What is the highest audible frequency?
- Q. At what frequency do humans hear?
Q. What is nature of sound waves?
introduction. Sound is a longitudinal, mechanical wave. Sound can travel through any medium, but it cannot travel through a vacuum. A region of increased pressure on a sound wave is called a compression (or condensation). A region of decreased pressure on a sound wave is called a rarefaction (or dilation).
Q. Are Sound Waves physical?
The physical phenomenon of sound is a disturbance of matter that is transmitted from its source outward. Hearing is the perception of sound, just as seeing is the perception of visible light. On the atomic scale, sound is a disturbance of atoms that is far more ordered than their thermal motions.
Q. How can you see sound waves?
You can see sound waves when a microphone is connected to an oscilloscope. A microphone changes the sound waves into an electrical signal. The oscilloscope then shows what these electrical waves look like.
Q. Why can light travel through a vacuum but sound Cannot?
Light waves are electromagnetic in nature. Thus the light can travel in vacuum. On the other hand, sound waves require a medium for their propagation. They are mechanical waves and cannot travel in vacuum.
Q. What is Earth’s vibrational frequency?
7.83 hertz
Q. What is the highest audible frequency?
That’s about the same as the lowest pedal on a pipe organ. On the other side of the human hearing range, the highest possible frequency heard without discomfort is 20,000Hz. While 20 to 20,000Hz forms the absolute borders of the human hearing range, our hearing is most sensitive in the 2000 – 5000 Hz frequency range.
Q. At what frequency do humans hear?
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)
