Compression is the part of a longitudinal wave where the particles of the medium are crowded together. Rarefaction is the part where the particles are spread apart.
The part of the longitudinal wave where the particles are close together is called the compression
It is called a compression.
solid have definite shape , definite volume and close together particles
That would be liquid because in a solid, they are stuck and in a gas, they are far apart but in a liquid the particles move around but are still close together.
Under the influence of external pressure the particles are forced together. Under the particles' own gravitational force the particles come together. Technically speaking there must be an external force to bring the particles of matter together. Another point to be noted is that when the particles moves so close to together that it crosses its critical mass a black hole is developed. But not always.
If the bits of matter are close together and move slowly, the matter is a GAS
It is called a compression.
No they are the furtherst away out of solids, liquids and gases.
In a longitudinal wave, the particles do not move with the wave. The particle movement is parallel to the direction of the wave propagation. This means that the particles move left and right which in turn makes the other particles start to oscillate. This creates a wave. longitudinal pressure waves are also known as sound waves.
particles in a solid are packed so close together they can only
No. You can compress a gas because the particles are NOT close together. If they are close together (as in a solid) it is extremely difficult to compress any further.
I don't think they exactly have a name for it. Its just called "The Surface". If you want the state of that substance its solid(when the particles are closest to each other) and gaseous(when the particles are farthest from each other). If you want the value of the cross-sectional area you have to give a value in your question. Other than that I don't think its called something other than a surface.
The state of matter depends on the closeness of the particles. Gases have particles that are very far apart and solids are close together. This is determined by the strength of attraction of these particles to one another.
no, the air inside balloons is a gas and therefore the particles are moving quickly and are spread out, bouncing off the sides of the balloon. Particles in solids are packed close together.
The particles of a solid are close together and the particles of a liquid are slightly farther apart.
steam is a gas so the particles are far apart
In solids, particles tend to stay still, and are close together
They are Waves that vibrate particles back and forth like this :::::: : : : : : : ::::::: : : : : :::::::: : : : : :::::::: : : : : ::::::: The ones close together are called compression the ones further apart are called rarefaction.