No. A rarefaction is the region of a sound wave where the particles are spread out rather than close together. The closer together regions are compressions. These terms are used about waves in air, not weather systems.
Rarefaction is a low pressure area, consisting of less molecules, and therefore has less density. Think "the molecules are rare in this area". The opposite of rarefaction is "compression."
Compression
volume
compressed, or in normal terms, tightly packed
It's because of the pressure from the layers above causes the particles of iron and nickel to be tightly packed.
Loess
Rarefaction
density
what is the measure if how tightly matter is packed into a givin volume of a substance
Solids, usually.
in solids molecules are tightly packed in liquid molecules are not so tightly packed whereas in gas they are free to move
No the molecules are all packed altogether tightly
rarefraction
sequence together.
Tightly packed, vibrating in place, has a definite shape and volume.
Solid !
It means that the molecules are packed together very tightly.
it is called the compression