Define the following. 1. compression2. rarefaction3. medium4. vaccum

1.	Define the following. 1. compression2. rarefaction3. medium4. vaccum
Answer» (1) Compression: A compression is a region in a longitudinal wave where the particles are closest together. (2) Rarefaction: A rarefaction is a region in a longitudinal wave where the particles are furthest apart. (3) Medium The material or empty space through which signals, waves or forces pass. (4) Vacuum: Vacuum, is a region without any matter, or a region of zero pressure (perfect vacuum). It is practically impossible to create perfect vacuum. So real vacuum should actually be defined as a region almost devoid of matter, or of very low pressure.

Answer»

(1) Compression:

A compression is a region in a longitudinal wave where the particles are closest together.

(2) Rarefaction:

A rarefaction is a region in a longitudinal wave where the particles are furthest apart.

(3) Medium

The material or empty space through which signals, waves or forces pass.

(4) Vacuum:

Vacuum, is a region without any matter, or a region of zero pressure (perfect vacuum). It is practically impossible to create perfect vacuum. So real vacuum should actually be defined as a region almost devoid of matter, or of very low pressure.

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