How do people use sound waves?

Answer 1

Sound is the perception of changes in pressure in the air.
Slow changes of pressure cannot be heard. Once the changes happen faster than 20 times a second, you start to hear sound. Above 16,000 changes per second and it goes beyond human perception.
You need air (or any gas) for sound to exist. Sound cannot be heard in a vacuum.

Answer 2

Sound is created by the transmission of soundwaves, when the particles hit into each other (a vibration) it makes a sound and you hear it when it reaches your ear drums.

Answer 3

Sound always propogates through a medium, such as air, water, rock, etc. When something creates a sound, it generates compression waves in the medium. These compression waves travel through the medium, usually without disturbing the medium itself. The compression waves themselves carry energy, just as waves on an ocean carry energy.

Answer 4

Every object has a unique natural frequency of vibration. Vibration can be induced by the direct forcible disturbance of an object or by the forcible disturbance the medium in contact with an object (e.g. the surrounding air or water). Once excited, all such vibrators (i.e., vibratory bodies) become generators of sound waves. For example, when a rock falls, the surrounding air and impacted crust undergo sinusoidal oscillations and generate a sound wave.

Vibratory bodies can also absorb sound waves. Vibrating bodies can, however, efficiently vibrate only at certain frequencies called the natural frequencies of oscillation. In the case of a tuning fork, if a traveling sinusoidal sound wave has the same frequency as the sound wave naturally produced by the oscillations of the tuning fork, the traveling pressure wave can induce vibration of the tuning fork at that particular frequency.

Mechanical resonance occurs with the application of a periodic force at the same frequency as the natural vibration frequency. Accordingly, as the pressure fluctuations in a resonant traveling sound wave strike the prongs of the fork, the prongs experience successive forces at appropriate intervals to produce sound generation at the natural vibrational or natural sound frequency. If the resonant traveling wave continues to exert force, the amplitude of oscillation of the tuning fork will increase and the sound wave emanating from the tuning fork will grow stronger. If the frequencies are within the range of human hearing, the sound will seem to grow louder. Singers are able to break glass by loudly singing a note at the natural vibrational frequency of the glass. Vibrations induced in the glass can become so strong that the glass exceeds its elastic limit and breaks. Similar phenomena occur in rock formations.

All objects have a natural frequency or set of frequencies at which they vibrate.

Answer 5

Like all waves, sound waves carry energy through a medium without the particles of the medium traveling along.

Answer 6

People use sound waves in ultrasound scans when women are pregnant. You can hear the noises the baby is making and the sound is through sound waves

Answer 7

by using gadgets or other thing in music..

Answer 8

through potatoes