How does sound travel? How can it be proven that sound can travel in solids?

Sound is propagated in a medium.

In two rooms, two people stand next to the heater, one person taps on the heater, and the other can hear the sound, indicating that the solid can transmit sound. Airborne transmission was excluded in this experiment.

How to prove it, it's very simple, find a wall that is long enough, you call someone to knock over there, you listen here, and you know that the sound can reach your ears through the wall

Sound is propagated in a medium.

One classmate put his ear to the table, and the other touched the table with his hand so that he could hear the sound. Illustrates that sound can travel in solids.

Sound is propagated in a medium.

You can hear this side of the pipe.

It's basically caused by vibration. When it vibrates, it forms a wave that propagates gases, liquids, or solids.

Everyone knows that sound is produced by the vibration of objects, and when speaking, the air vibration caused by it is transmitted through the air or other objects, which generates sound waves, thus producing sound. Of course, the propagation of sound is inseparable from the medium, which is divided into solid, liquid and gas, such as air, water, wood and other elastic media, which are all good mediums for sound waves.

Sound is produced by the vibration of an object in a medium, and the vibration travels through the medium, so the sound travels.

Sound generation and propagation.

OK. Sound is a wave generated by the vibration of an object, which is a wave phenomenon that travels through a medium (air or solid, liquid) and can be perceived by the auditory organs of humans or animals. An object that initially vibrates (vibrates) is called a sound source, and sound is transmitted in the form of a wave.

Sound is the motion formed by the propagation of sound waves through any medium.

The principle of sound production

Sound is a pressure wave: when a musical instrument is played, a door is slammed or a table is struck, their vibrations cause the medium-air molecules to vibrate rhythmically, causing the surrounding air to produce dense changes to form sparse longitudinal waves, which produce sound waves, and this phenomenon continues until the vibration disappears.

As a kind of wave, frequency and amplitude have become important properties to describe the wave, the magnitude of the frequency corresponds to what we usually call pitch, and the amplitude affects the magnitude of the sound. Sound can be broken down into superpositions of sine waves of different frequencies and intensities. This process of transformation (or decomposition) is called the Fourier transform.

Therefore, sound in general always contains a certain frequency range. The frequency range of sounds that can be heard by the human ear is between 20 and 20,000 hertz. Fluctuations above this range are called ultrasound, while those below this range are called infrasound.

Animals such as dogs and bats can hear sounds up to 160,000 hertz. Whales and elephants produce sounds with frequencies in the range of 15 to 35 Hz.

The propagation of sound is explained by quantum mechanics as the movement of atoms, which forms sound waves. But this is not related to nouns such as wave particles.

Sound can be transmitted through the vibrations of air, water, and objects; There are many methods or experiments.

You can use a tin can, a mooncake box, a cookie tin; After eating the mooncake cookie tin.

Wash the jar.

Wipe dry with a dry cloth.

Then put d a grain of styrofoam particles and small paper into a can into the noodles.

Then use a chopstick spoon to spoon the basket. Knock on a can.

Hold on. Every time you knock.

It's not just cans that make noises because they are vibrate.

d. Paper shredding styrofoam particles will jump even more.

The above experiments prove the production of sound.

It is made by the vibration of the object. You pay attention to it.

The object is not subject to friction and vibration.

When at rest.

It doesn't make a sound. Sound can travel through the air.

Particles in the air.

Be shaken. It can also spread sound. If you put two vacuumed glass bottles of glue in your ears.

These things insulate the air from vibrations and sound waves.

You won't be able to hear the sound.

Reference: Design your own experiments.

Write yourself. Don't plagiarize!

Yes. If only the material is considered, the solid sound transmission is mutual.

However, if you take into account the shape, the result will be a little different, and you can refer to the structural design of the flaring and sound-attenuating laboratory.

The essence of sound is vibration, and since it can be transmitted, it can be transmitted. It's not possible to shake this out of a single motion and it's not the same as an analog signal.